2019年第6期Ei 收录情况
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1.---------------------------------------------------------------
Accession number:20200308059610
Title:Research Progress of Self-repairing Solid Propellants
Title of translation:自修复固体推进剂研究进展
Authors:Xia, Min ; Zhang, Yan-Jie ; Li, Xiao-Yu ; Ding, Shan-Jun ; Luo, Yun-Jun
Author affiliation:School of Materials Science and Engineering, Beijing Institute of Technology, Beijing; 100081, ChinaKey Laboratory of High Energy Density Materials, Ministry of Education, Beijing; 100081, China
Corresponding author:Luo, Yun-Jun (yjluo@bit.edu.cn)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:531-539
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:Several important types of self-repairing mechanisms of polymer materials including external and intrinsic self-repairing were introduced. The methyl furan terminated polybutadiene binders based on Diels-Alder reaction, polyurethane binders based on dynamic photo-crosslinking reaction, self-repairing GAP binders based on disulfide bond, and their applications in solid propellants, were reviewed respectively. The future development of self-repairing solid propellants and their potential application were introduced. It was pointed out that, by considering the overall formulation of solid propellants, designing the formulation systems of solid propellants matches the self-repairing function. While realizing the self-repairing property, improving cooperatively the mechanical and energy properties of propellants will be an important research direction of self-repairing solid propellants in the future with 38 references.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:38
Main heading:Solid propellants
Controlled terms:Binders - Covalent bonds - Crosslinking - Dynamics - Polybutadienes - Repair - Sulfur compounds
Uncontrolled terms:Diels-Alder reaction - Disulfide bonds - Material science - Photo crosslinking reaction - Self repairing
Classification code:524 Solid Fuels - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 815.1.1 Organic Polymers - 913.5 Maintenance
DOI:10.14077/j.issn.1007-7812.201907007
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.3


2. ---------------------------------------------------------------
Accession number:20200308059401
Title:Research Progress at Home and Abroad on the Technology of Reducing Ballistic Temperature Coefficient of Gun Propellant Charge
Title of translation:降低发射装药弹道温度系数技术的国内外研究进展
Authors:Zhao, Qiang ; Liu, Bo ; Liu, Shao-Wu ; Ma, Fang-Sheng ; Wang, Qiong-Lin
Author affiliation:Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China
Corresponding author:Wang, Qiong-Lin (wangqionglin369@126.com)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:540-547
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:The domestic and overseas technical advance about reducing ballistic temperature coefficient of gun propellant charge, including surface compensation technic such as mechanical flattening technology, coating technology, surface coated double base (SCDB) technology, extruded impregnated (EI) technology, extruded composite low sensitivity (ECL) technology and so on, were reviewed. The burning rate of low temperature coefficient (LTC) gun propellant can be kept basically consistent at different temperatures by optimizing its configuration, resulting in decreased ballistic temperature coefficient of gun propellant charge. Electrothermal-chemical launch technology can reduce ballistic temperature coefficient of gun propellant charge significantly by adjusting input energy to compensate the decrement of burning rate of gun propellant. Combined with the basic principle of reducing ballistic temperature coefficient of gun propellant charge, the regulatory mechanism of reducing ballistic temperature coefficient of gun propellant charge by using different technological approaches is summarized. Based on the above discussion, the researches on ECL gun propellant and SCDB gun propellant should be carried out in the future. And the research on the interaction mechanism of plasma and gun propellant and the study on the miniaturization of power supply should be further strengthened with 62 references.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:62
Main heading:Temperature
Controlled terms:Ballistics - Composite propellants - Physical chemistry - Propellants
Uncontrolled terms:Electrothermal chemical launches - Electrothermal-chemical gun - Flattening technology - Gun propellants - Interaction mechanisms - Low temperature coefficients - Surface coated double base technologies - Temperature coefficient
Classification code:404.1 Military Engineering - 641.1 Thermodynamics - 801.4 Physical Chemistry - 951 Materials Science
DOI:10.14077/j.issn.1007-7812.201902007
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

3.---------------------------------------------------------------
Accession number:20200308059582
Title:Preparation and Thermal Decomposition Characteristics of Energetic Metastable Intermolecular Composite Si@PVDF/CL-20
Title of translation:硅基纳米含能亚稳态复合物Si@PVDF/CL-20的制备及热分解特性
Authors:Zuo, Bei-Lin ; Liang, Qiu-Jin ; Zhang, Jia-Ling ; Zhao, Rui-Qing ; Liu, Pei-Jin ; Yan, Qi-Long
Author affiliation:Science and Technology on Combustion, Internal Flow and Thermo-structure Laboratory, Northwestern Polytechnical University, Xi'an; 710072, China
Corresponding author:Yan, Qi-Long (qilongyan@nwpu.edu.cn)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:548-556
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:In order to improve the energy efficiency of composite nano-metal materials, the energetic intermolecular complexes Si@PVDF/CL-20 with different silicon content (20%, 30% and 40%)were prepared by electrostatic spray method. The heat of combustion of PVDF/CL-20 composites with different ratios was obtained by bomb calorimeter. The morphology of PVDF/CL-20 composite was clarified by using SEM. The effect of Si content on the morphology of Si@PVDF/CL-20 composite particles was also analyzed. The thermal behavior of energetic compounds with different silicon content was studied by DSC-TG, and the kinetic paramters of thermal decomposition were calculated. The thermal analyses indicate that when the PVDF/CL-20 mass ratio is 1: 6, the heat of combustion reaches a maximum value, which can be used as the optimal ratio incoating of nano-Si powder. The SEM results show that when the silicon content is 30%, the composite particles (Si-30%@PVDF/CL-20) exhibite the best sphericity. The DSC results show that when the silicon content is 20%, a runaway chemical reaction was likely occurred. The effect of Si powder on the decomposition of PVDF/CL-20 composite plays less significant role with the increase of content. The apparent activation energies of Si@PVDF/CL-20 composites calculated by Friedman method are 470.6, 182.1, 91.7kJ/mol, respectively. The complex decomposition process of Si-20%@PVDF/CL-20 cannot be described by a single kinetic model, whereas those of Si-30%@PVDF/CL-20 and Si-40%@PVDF/CL-20 can be well described by a nucleation and growth model.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:30
Main heading:Decomposition
Controlled terms:Activation energy - Calorimeters - Combustion - Composite materials - Electrostatics - Energy efficiency - Kinetics - Morphology - Physical chemistry - Powder metals - Silicon - Thermoanalysis - Thermochemistry - Thermolysis
Uncontrolled terms:Combustion heat - Electrostatic spray - Nano-metal - Nano-silicon - Thermal decomposition kinetics
Classification code:525.2 Energy Conservation - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 701.1 Electricity: Basic Concepts and Phenomena - 801 Chemistry - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 931 Classical Physics; Quantum Theory; Relativity - 944.5 Temperature Measuring Instruments - 951 Materials Science
Numerical data indexing:Percentage 2.00e+01%, Percentage 3.00e+01%, Percentage 4.00e+01%
DOI:10.14077/j.issn.1007-7812.201903010
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.


4. ---------------------------------------------------------------
Accession number:20200308059540
Title:Preparation of Nano-Cu-Cr Composite Metal Oxides via Mechanical Grinding Method and Its Catalytic Performance for the Thermal Decomposition of Ammonium Perchlorate
Title of translation:纳米Cu-Cr复合金属氧化物的机械研磨制备及对AP的催化性能
Authors:Hao, Ga-Zi ; Li, Li ; Gou, Bing-Wang ; Xiao, Lei ; Hu, Yu-Bing ; Liu, Jie ; Jiang, Wei ; Zhao, Feng-Qi ; Gao, Hong-Xu
Author affiliation:School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing; 210094, ChinaKey Laboratory of Special Energy Materials (Nanjing University of Science and Technology), Ministry of Education, Nanjing; 210094, ChinaXi'an Modern Chemistry Research Institute, Xi'an; 710065, China
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:557-565
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:To enhance the catalytic effect of nano-sized copper oxide on the thermal decomposition of ammonium perchlorate (AP), a series of nano-Cu-Cr composite metal oxides (nano CuO/Cr2O3) with different molar ratios of CuO and Cr2O3 (1: 2, 1: 1, 1: 0.5 and 1: 0.25) were prepared by a mechanical grinding method. The microstructures, surface elements and morphologies of these nano-composite metal oxides were characterized and analyzed by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The catalytic effects of the nano-Cu-Cr composite metal oxides on the thermal decomposition of AP were investigated by thermogravimetric (TG) analysis and differential scanning calorimetric (DSC) techniques, and the effect of the nano CuO/Cr2O3 content on the thermal decomposition of AP was also discussed. The results show that adding 2%(mass fraction) nano-Cu-Cr composite metal oxide with the molar ratio (1: 0.25) of CuO and Cr2O3 has the best catalytic effect for the thermal decomposition of the AP compared with the other nano-Cu-Cr composite metal oxides, pure nano CuO or nano Cr2O3. Additionally, the decomposition temperature of AP decreases from 441.3℃ to 351.1℃, the Gibbs free energy of AP reduces from 199.8kJ/mol to 172.1kJ/mol, whereas the decomposition heat rises from 941 J/g to 1778 J/g. The reason may be due to that the high energy grinding force field in the process of the mechanical grinding results in the lattice change of nano CuO and nano Cr2O3, which promotes their synergistic catalytic effect on the thermal decomposition of AP.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:23
Main heading:Chromium compounds
Controlled terms:Copper oxides - Decomposition - Free energy - Gibbs free energy - Grinding (machining) - High resolution transmission electron microscopy - Inorganic compounds - Metals - Molar ratio - Nanocomposites - Pyrolysis - Scanning electron microscopy - Thermogravimetric analysis - Thermolysis
Uncontrolled terms:Ammonium perchlorates - Catalytic performance - Composite metal oxides - Decomposition temperature - Differential scanning calorimetric - Material science - Mechanical grinding - Synergistic catalysis
Classification code:604.2 Machining Operations - 641.1 Thermodynamics - 741.3 Optical Devices and Systems - 761 Nanotechnology - 801 Chemistry - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 933 Solid State Physics
Numerical data indexing:Specific_Energy 9.41e+05J/kg to 1.78e+06J/kg
DOI:10.14077/j.issn.1007-7812.201905015
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.


5. ---------------------------------------------------------------
Accession number:20200308059580
Title:Effects of Different Content of Nanomaterials on the Combustion Performance of RDX-CMDB Propellants
Title of translation:不同纳米材料含量对RDX-CMDB推进剂燃烧性能的影响
Authors:Yuan, Zhi-Feng ; Yang, Yan-Jing ; Zhao, Feng-Qi ; Zhang, Jiao-Qiang ; Song, Xiu-Duo ; Gao, Hong-Xu ; Xu, Si-Yu
Author affiliation:Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Xi'an; 710065, ChinaScience School of Northwestern Polytechnical University, Xi'an; 710072, China
Corresponding author:Zhao, Feng-Qi (zhaofqi@163.com)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:566-570 and 582
Language:English
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:The influence of nano-copper (n-Cu), nano-nickel (n-Ni) and carbon nanotubes on the combustion performance of RDX-CMDB propellants was investigated. The mechanism of n-Ni on the combustion performance was also discussed by analysis of flame morphology and thermal decomposition performance. The results reveal that n-Ni with mass ratio of 0.6% would reduce the pressure exponent of RDX-CMDB propellant from 0.29 to 0.11 in the pressure range of 6-16MPa. By contrast, the effect was not obvious for the 0.2% n-Cu, which even causes the decrease of burning rate at 2MPa and 8-16MPa. For the 0.8% CNTs with conventional Pb-Cu-C as catalyst, the burning rate of RDX-CMDB propellant increases from 17.12 to 22.12mm/s at 10MPa. Furthermore, The thermal decomposition and flame morphology imply that n-Ni improves the decomposition heat, enhances the burning surface temperature and thermal feedback, which is contributed to the thermal decomposition rate.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:17
Main heading:Solid propellants
Controlled terms:Carbon nanotubes - Combustion - Copper compounds - Decomposition - Lead compounds - Morphology - Nanostructured materials - Physical chemistry - Propellants - Thermolysis
Uncontrolled terms:Burning rate - Combustion performance - Decomposition performance - Mesa effect - Pressure exponents - RDX-CMDB propellant - Surface temperatures - Thermal feedback
Classification code:524 Solid Fuels - 761 Nanotechnology - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally - 951 Materials Science
Numerical data indexing:Percentage 6.00e-01%, Percentage 8.00e-01%, Pressure 1.00e+07Pa, Pressure 2.00e+06Pa, Pressure 6.00e+06Pa to 1.60e+07Pa, Pressure 8.00e+06Pa to 1.60e+07Pa, Velocity 1.71e-02m/s to 2.21e-02m/s
DOI:10.14077/j.issn.1007-7812.201812001
Funding Details: Number Acronym Sponsor 21905224 NSFC
National Natural Science Foundation of China
Funding text:National Natural Science Foundation of China(No.21473130; No.21905224).
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.


6. ---------------------------------------------------------------
Accession number:20200308059503
Title:Fabrication and Characterization of Submicron-sized RDX with Reduced Sensitivity via Green Mechanical Demulsification Technology
Title of translation:绿色机械破乳法制备亚微米低感度RDX及其性能表征
Authors:Jia, Xin-Lei
Author affiliation:College of Chemical Engineering and Safety, Binzhou University, Binzhou; Shandong; 256600, China
Corresponding author:Jia, Xin-Lei (1004024260@qq.com)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:571-576
Language:English
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:The submicron-RDX with spherical shape and uniform particle size distribution was successfully prepared by green mechanical demulsification technology. The morphology, particle size distribution, thermal properties and safety performance were characterized. The particle size distribution characteristics of submicron-sized RDX prepared were explored based on the fractal geometry theory, which compared with the conventional recrystallization method. The results show that the RDX fabricated via the green mechanical demulsification technology is spherical shape with a median diameter of 470nm, and possesses better thermal stability and safety than that of RDX refined by the traditional recrystallization. In the double logarithm coordinates, the weight cumulative percentage of RDX prepared using green mechanical demulsification technology and recrystallization has a linear relationship with the particle size, and the fractal dimension D of the particles are 1.54473 and 0.82996, respectively, revealing that the submicron-sized RDX particles prepared by the former has a narrower particle size distribution, and better dispersion.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:21
Main heading:Particle size
Controlled terms:Demulsification - Fabrication - Fractal dimension - Light transmission - Particle size analysis - Recrystallization (metallurgy) - Size distribution
Uncontrolled terms:Applied chemistry - Factal geometry theory - Refinement - Sensitivity - Submicron
Classification code:531.1 Metallurgy - 741.1 Light/Optics - 802.3 Chemical Operations - 921 Mathematics - 922.2 Mathematical Statistics - 951 Materials Science
Numerical data indexing:Size 4.70e-07m
DOI:10.14077/j.issn.1007-7812.201905025
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.


7. ---------------------------------------------------------------
Accession number:20200308059429
Title:Study of Aldehyde/Allyl-aryloxypolyphosphazene-based Inhibition Materials for Loading Solid Propellant (II): Heat-and Ablation-resistant Properties and Application
Title of translation:自由装填推进剂用含醛基/烯丙基芳氧基聚磷腈包覆材料研究(Ⅱ): 耐热, 耐烧蚀性能及应用
Authors:Cao, Ji-Ping ; Xiao, Xiao ; Wei, Le ; Wang, Jia-Peng ; Zhao, Feng-Qi ; Yang, Shi-Shan
Author affiliation:Xi'an Modern Chemistry Research Institute, Xi'an; 710065, ChinaScience and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Xi'an; 710065, ChinaArmy Representation Office in Liaoyang, Liaoyang; Liaoning; 111002, China
Corresponding author:Yang, Shi-Shan (358240234@qq.com)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:577-582
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:The aldehyde/allyl-aryloxypolyphazene-based inhibition formulas for free loading solid propellant were prepared via compounding and vulcanization, then the heat-, ablation- and fire-resistant properties were studied by thermogravimetric, ablation rate, scanning clectron microscope (SEM) and static ground engine test. The results indicate that the initial and maximum mass loss temperature of aldehyde/allyl-aryloxypolyphazene-based inhibitors are 524-532℃ and 567-573℃, respectively, and the char yields at 800℃ are 14.82%-31.16%. Moreover, the molar ratio of mixed substituents group could not have a remarkable effect on initial and maximum mass loss temperature whereas the char yields in 800℃ presented obvious differences. Ablation rate and micro-topography of char layer analysis show that the linear ablation rate are 0.084-0.012mm/s, the mass ablation rate are 0.010-0.042g/s. The results of static ground engine test show that the motor charge of modified double base propellant inhibited by aldehyde/allyl-aryloxypolyphazene is working normally with a smoothing p-t curve and the reliable anti-combustion is attained with the inhibitor.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:12
Main heading:Ablation
Controlled terms:Aldehydes - Curve fitting - Engines - Molar ratio - Solid propellants - Topography
Uncontrolled terms:Ablation rates - Aryloxypolyphosphazene - Free-loading - Inhibitor - Material science - PDPP
Classification code:524 Solid Fuels - 641.2 Heat Transfer - 804 Chemical Products Generally - 804.1 Organic Compounds - 921.6 Numerical Methods - 951 Materials Science
Numerical data indexing:Mass_Flow_Rate 1.00e-05kg/s to 4.20e-05kg/s, Percentage 1.48e+01% to 3.12e+01%, Velocity 8.40e-05m/s to 1.20e-05m/s
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

8. ---------------------------------------------------------------
Accession number:20200308059606
Title:Thermal Behaviors of Al/TiH2/PTFE Ternary Active Materials
Title of translation:Al/TiH2/PTFE三元活性材料的热行为研究
Authors:Cao, Lin ; Yu, Zhong-Shen ; Fang, Xiang ; Li, Yu-Chun ; Zhang, Jun ; Wu, Jia-Xiang ; Song, Jia-Xing
Author affiliation:Field Engineering Institute, PLA Army Engineering University, Nanjing; 210001, China
Corresponding author:Li, Yu-Chun (liyuchunmail@sina.com)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:583-588 and 596
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:To explore the reaction mechanism of Al/TiH2/PTFE ternary active materials, four composites, Al/PTFE, TiH2/PTFE, Al/TiH2 and Al/TiH2/PTFE, were prepared by a wet mixing method. The thermal decomposition and thermal reaction behavior of the composites were studied by TG-DSC, and the thermal reaction products at different temperatures were analyzed by XRD.The calorific values of active materials were measured by oxygen bomb calorimeter. The results show that in Al/TiH2/PTFE ternary active material system, titanium hydride first decomposes into metal titanium and hydrogen when heated. With the increase of temperature, titanium and aluminum are oxidized into TiF3 (or TiF4) and AlF3 by PTFE, respectively. When the temperature is about 752℃, the chemical reaction between the excessive Al and Ti happens and Al3Ti is formed. XRD results show that TiC is generated from the reaction between Ti and C after 780℃. The oxygen bomb calorimeter results indicate that the combustion calorific value of Al/PTFE increases from 13812J/g to 14876J/g by adding 10% (mass fraction) of TiH2, and the combustion calorific value was improved by nearly 7.7%. TiH2 participates in the reaction of the Al/PTFE active material system and improves the energy density of the materials effectively, which can be a good candidate as a high-energy additive.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:18
Main heading:Titanium compounds
Controlled terms:Aluminum compounds - Bombs (ordnance) - Calorific value - Calorimeters - Combustion - Decomposition - Hydrides - Oxygen - Titanium carbide - X ray diffraction
Uncontrolled terms:Active material - Bomb calorimetry - Material science - Metal hydrides - TG-DSC
Classification code:404 Civil Defense and Military Engineering - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 944.5 Temperature Measuring Instruments
Numerical data indexing:Percentage 1.00e+01%, Percentage 7.70e+00%, Specific_Energy 1.38e+07J/kg to 1.49e+07J/kg
DOI:10.14077/j.issn.1007-7812.201904007
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

9. ---------------------------------------------------------------
Accession number:20200308059454
Title:Muti-scale Simulation and Experimental Study of NC/TMETN Bonding SystemTitle of translation:NC/TMETN黏结体系的多尺度模拟及实验研究
Authors:Zhang, Chao ; Wang, Ke ; Li, Jun-Qiang ; Li, Wei ; Hu, Yi-Wen ; Tao, Lei ; Chen, Jun-Bo ; Wang, Jiang-Ning ; Yang, Li-Bo ; Yuan, Zhi-Feng Author affiliation:Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China
Yibin North Chemical Industry Co. Ltd., Yibin; Sichuan; 644219,
ChinaSource title:
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:589-596
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:The theoretical plasticizing effect of different mass fraction of trimethylotethane reinitiate (TMETN) on nitrocellulose (NC) was investigate through the molecular dynamics (MD) and dissipative particle dynamics (DPD) methods, and the simulation results were further validated by static mechanical properties and mechanical sensitivity tests. The results show that the NC/TMETN bonding system with 1.3: 1.0 mass ratio exhibits the largest NC radius of gyration (20.41?), the hydrogen-bond interaction is the strongest, and the maximum lengths of trigger bond (O-NO2) is the shortest, which implying that the mechanical and safety performances are the best for this NC/TMETN bonding system, and TMETN has better plasticizing effect on NC. The blending degree and blending time for 1.3: 1.0 system are better than those of 1.2: 1.0 mass ratio, showing that NC/TMETN bonding system with 1.3: 1.0 mass ratio has better plasticizing effect on NC. Moreover, in the experimental tests, the tensile strength, impact sensitivity and friction sensitivity of NC/TMETN bonding system with mass ratio of 1.3: 1.0 at 20℃ are 16.22MPa, 67.7cm, and 4%, respectively. Its mechanical and safety performances are the best in the whole bonding systems, which is well in according with MD and DPD simulations.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:21
Main heading:Molecular dynamics
Controlled terms:Blending - Hydrogen bonds - Tensile strength
Uncontrolled terms:Applied chemistry - Bonding systems - Dissipative particle dynamics - Dissipative particle dynamics method (DPD) - Friction sensitivities - Hydrogen bond interaction - Mechanical sensitivity - Static mechanical properties
Classification code:801.4 Physical Chemistry - 802.3 Chemical Operations
Numerical data indexing:Percentage 4.00e+00%, Pressure 1.62e+07Pa, Size 2.04e-09m, Size 6.77e-01m
DOI:10.14077/j.issn.1007-7812.201807022
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

10. ---------------------------------------------------------------
Accession number:20200308059601
Title:The Temperature-size Effect of Screw Extrusion Modified Double-base Propellant at Wide Temperature Range
Title of translation:宽温下螺压改性双基推进剂的温度尺寸效应
Authors:Wang, Jiang-Ning ; Zheng, Wei ; Song, Xiu-Duo ; Shang, Fan ; Hu, Yi-Wen
Author affiliation:
Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China
Corresponding author:Hu, Yi-Wen (huyiwenn123@163.com)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:597-601
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:To investigate the temperature-size effect of screw extrusion modified double-base propellant at wide temperature range, the thermo-mechanical analyzer was employed to measure the linear expansion behavior and dynamic mechanical performance of typical formulation at the temperature range of -90-120℃. The results reveal that the typical propellant exhibits obvious linear expansion behavior, which the maximum axial deformation and linear expansion coefficient reach to 0.16mm and 4.5×10℃, respectively. Its expansion curve can be roughly divided into four stages: slow expansion zone, platform zone, rapid expansion zone and shrinkage zone, which the three deformation mutation processes in the curves could be associated with β transition, α transition and viscous transition of NC binder. Furthermore, the drop of lower limit temperature does not have much influence on the dimensional stability of the typical propellant with the temperature reduce from -40℃ to -55℃. On the other hand, when the upper limit temperature increases from 50℃ to 70℃, the linear expansion coefficient rapidly increases from 1.55×10℃ to 2.72×10℃, indicating that the obvious expansion behavior appeared for this propellant. It should be also noted that the initial loading temperature strongly affect the axial expansion behavior of screw extrusion modified double-base propellant.It should be also noted that the temperature of α transition and viscous transition shifts to low values with the initial loading temperature increases.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:17
Main heading:Expansion
Controlled terms:Deformation - Dynamics - Extrusion - Physical chemistry - Propellants - Screws - Size determination
Uncontrolled terms:Dynamic mechanical performance - Linear expansion coefficient - Loading temperature - Modified double-base propellant - Temperature increase - Temperature-size effects - Thermo-mechanical analyzer - Wide temperature ranges
Classification code:605 Small Tools and Hardware - 801.4 Physical Chemistry - 951 Materials Science
Numerical data indexing:Size 1.60e-04m
DOI:10.14077/j.issn.1007-7812.201905017
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

11. ---------------------------------------------------------------
Accession number:20200308059564
Title:Theoretical Calculation and Numerical Simulation of Thermal Safety on NEPE Propellant
Title of translation:NEPE推进剂热安全性的理论计算与数值模拟
Authors:Qin, Pei-Wen ; Wang, Meng-Lei ; Lu, Rui-Hua ; Guo, Chun-Liang ; Huang, Chang-Long ; Li, Ying ; Zhao, Xiao-Bin ; Peng, Song
Author affiliation:Hubei Institute of Aerospace Chemotechnology, Xiangyang; Hubei; 441003, ChinaScience and Technology on Aerospace Chemical Power Laboratory, Xiangyang; Hubei; 441003, ChinaSafety Technology Research Center of Solid Propellant in Aerospace, Xiangyang; Hubei; 441003, ChinaThe Key Laboratory of Emergency Rescue and Safety Protection Technology of Hubei Province, Xiangyang; Hubei; 441003, China
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:602-607 and 613
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:In order to predict the thermal safety of NEPE propellant grain with different sizes, the mathematical relationship between the size and apparent kinetic parameters of exothermic decomposition reaction, based on previous thermal safety tests of NEPE propellant grain with different sizes, was applied for theoretical calculation and numerical simulation, and the thermal safety performance of NEPE propellant grain with different sizes was investigated. The numerical simulation results of the thermal explosion critical temperature and delay period are 78-79℃ and 100-150d (79℃); the thermal explosion critical temperature obtained from original Semenov, Frank-Kamenetskii, Thomas theory algorithm and original finite element methods are higher than that of the test data, and the data obtained by engineering modified Semenov theory algorithm are closer to the experimental results. In the process of increasing diameter from 10mm to 3000mm, the thermal explosion critical environment temperature gradually approaches from 130℃ to 60℃, and the smaller the size is, the more obvious the effect of decreasing the critical environment temperature of thermal explosion is.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:15
Main heading:Explosions
Controlled terms:Numerical methods - Numerical models - Propellants - Safety testing - Temperature - Thermal Engineering
Uncontrolled terms:Explosion mechanics - NEPE propellant - Numerical calculation - Theoretical calculations - Thermal explosion - Thermal safety
Classification code:641.1 Thermodynamics - 914.1 Accidents and Accident Prevention - 921 Mathematics - 921.6 Numerical Methods
Numerical data indexing:Size 1.00e-02m to 3.00e+00m
DOI:10.14077/j.issn.1007-7812.201801023
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

12. ---------------------------------------------------------------
Accession number:20200308059568
Title:Effect of Ingredients Microstructure of CL-20-based Aluminum-containing Explosives on Explosion Energy Release
Title of translation:CL-20基含铝炸药组分微结构对其爆炸释能特性的影响
Authors:Feng, Xiao-Jun ; Xue, Le-Xing ; Cao, Fang-Jie ; Liu, Qian ; Li, Xin
Author affiliation:
Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:608-613
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:In order to improve the reaction kinetic characteristics of Al powder in CL-20-based aluminum-containing explosives, CL-20/Al composite particles were prepared by solvent-non-solvent method, and CL-20 particles and Al particles were close contacted in microstructures. Then the composite explosives containing 85% CL-20/10% Al/5%-polymer binder composite particles were prepared by the direct method. The mechanical sensitivity, explosion heat, explosion tank test results and cylinder test results were compared between CL-20-based aluminum-containing explosives with the method in this work and the same formula prepared by conventional method. The results show that CL-20/Al composite particles can slightly increase the impact sensitivities of explosives, and the friction sensitivity is not changed. Through recombination of CL-20/Al on the micro-structure, because of shortening the diffusion distance between Al powder and detonation products, the reaction kinetics of Al powders can be significantly improved. Further, the reaction completeness of Al powders in the explosion process of aluminum-containing explosives can be improved, and it forces the reaction of part of Al powders occurring in the detonation zone.Compared with the conventional method, the explosion heat of explosive increases from 6787J/g to 6930J/g, the maximum temperature of explosion field in explosive tank increases from 544.3℃to 661.2℃, and the Gurney coefficient increases from 2.88mm/μs to 3.10mm/μs.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:13
Main heading:Detonation
Controlled terms:Aluminum - Association reactions - Composite materials - Explosions - Kinetics - Microstructure - Powders - Reaction kinetics - Solvents - Tanks (containers)
Uncontrolled terms:Composite particles - Conventional methods - Explosion mechanics - Friction sensitivities - Impact sensitivities - Kinetic characteristics - Mechanical sensitivity - Non-solvent methods
Classification code:541.1 Aluminum - 619.2 Tanks - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 931 Classical Physics; Quantum Theory; Relativity - 951 Materials Science
Numerical data indexing:Specific_Energy 6.79e+06J/kg to 6.93e+06J/kg
DOI:10.14077/j.issn.1007-7812.201903019
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

13. ---------------------------------------------------------------
Accession number:20200308059467
Title:Ignition and Combustion Characteristics of Tetraethylammonium Dodecahydrododecaborates
Title of translation:十二氢十二硼酸双四乙基铵的点火与燃烧特性
Authors:Pan, Xin-Xin ; Huang, Xue-Feng ; Li, Sheng-Ji ; Yang, Yan-Jing ; Zhang, Jian-Kan ; Jiang, Yu-Kun ; Shen, Jian-Feng ; Guo, Yan-Hui
Author affiliation:
Department of Materials Science, Fudan University, Shanghai; 200433, ChinaHangzhou Dianzi University, Hangzhou; 310018, ChinaXi'an Modern Chemistry Research Institute, Xi'an; 710065, ChinaInstitute of Special Material and Technology, Fudan University, Shanghai; 200433, China
Corresponding author:Guo, Yan-Hui (gyh@fudan.edu.cn)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:614-620
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:In order to understand the ignition and combustion characteristics of tetraethylammonium dodecahydrododecaborate, laser ignition experiments were conducted on a sample with an equivalent diameter of 1.11mm to determine its ignition and combustion parameters. Combining with the pyrolysis behaviors in both nitrogen and air atmospheres achieved by thermogravimetric analysis/mass spectrometry, the combustion mechanism of tetraethylammonium dodecahydrododecaborate was also evaluated. The results show that tetraethylammonium dodecahydrododecaborate, which cracks at above 300℃ in both nitrogen and air atmosphere, has a good thermal stability. During the cracking process, the material is oxidized simulaneously and oxidized strongly and gain weight when heated to 650℃. This compound can be ignited easily in air, and its ignition delay time is determined to be 45.8ms with the ignition power density of 4.72×10W/m, and the total burning time is 2.467s. The surface temperature is 1600-1800℃ during the combustion process. It is proposed that, in the combustion process of tetraethylammonium dodecahydrododecaborate, both H2 release and skeleton cracking occur, and the combustion of the gaseous hydrocarbon compounds formed from skeleton cracking could lead to obvious traces of smoke.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:30
Main heading:Ignition
Controlled terms:Ammonium compounds - Fuels - Musculoskeletal system - Nitrogen - Smoke - Thermogravimetric analysis
Uncontrolled terms:Combustion characteristics - Material science - Polyhydroborate anion compound - Solid fuels - Tetraethylammonium
Classification code:461.3 Biomechanics, Bionics and Biomimetics - 521.1 Fuel Combustion - 801 Chemistry - 804 Chemical Products Generally
Numerical data indexing:Time 2.47e+00s, Time 4.58e-02s
DOI:10.14077/j.issn.1007-7812.201907003
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

14. ---------------------------------------------------------------
Accession number:20200308059538
Title:Study on the Scaling Similarity Characteristics of Structural Internal Blast Loading
Title of translation:结构内部爆炸冲击波载荷的相似特性
Authors:Gu, Hong-Ping ; Yao, Shu-Jian ; Zhang, Duo ; Lü, Yong-Zhu ; Zhang, Li-Jian ; Chang, Bo
Author affiliation:Xi'an Modern Chemistry Research Institute, Xi'an; 710065, ChinaSchool of Traffic & Transportation Engineering, Central South University, Changsha; 410083, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha; 410073, China
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:621-625 and 630
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:To verify the feasibility of the Hopkinson explosion similarity law in structural internal blast condition, the general models and classical explosion similarity laws of structural internal blast loading were summarized, and the propagation characteristics of blast waves in the box structures were analyzed by numerical simulation using LS-DYNA software. The values of pressure and impulse were compared in the typical positions of the three similar structures. The results show that the internal blast loading has the characteristics of multi-peaks and long loading time. The blast loading in the central regions of the box wall matches the Hopkinson's similarity law, but in the edges and corners which are the interaction regions of shock waves in the box, it doesn't follow the law. The differences of pressure peak values are more than 20 percent and the difference increases with increasing the complexity of the structure inside the box. Compared with the estimated value by the similarity law, the calculated discrepancy of impulse is about 1%, which is obviously smaller than that of peak pressure.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:19
Main heading:Shock waves
Controlled terms:Computer simulation - Computer software - Explosions - Numerical models
Uncontrolled terms:Box structures - Explosion mechanics - Interaction region - Internal blast loading - Internal blasts - Pressure peaks - Propagation characteristics - Similarity law
Classification code:723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 921 Mathematics - 931 Classical Physics; Quantum Theory; Relativity
Numerical data indexing:Percentage 1.00e+00%, Percentage 2.00e+01%
DOI:10.14077/j.issn.1007-7812.201809010
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

15. ---------------------------------------------------------------
Accession number:20200308059615
Title:Experimental Study on Internal Explosion Performance of Charge with Metal-fluoropolymer Coating
Title of translation:含金属-氟聚物包覆层装药的内爆性能试验研究
Authors:Wang, Hui ; Shen, Fei ; Li, Biao-Biao ; Wang, Sheng-Qiang
Author affiliation:
Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:626-630
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:In order to study the energy release characteristics of metal-fluoropolymer coated charges in confined space, three samples with metal-fluoropolymer to charge mass ratios(η) of 0, 0.3 and 0.63 were prepared, and static explosion tests were carried out in an explosion tank. The overpressure of the shock wave, specific impulse, temperature and quasi-static pressure of the three samples after explosion were compared and analyzed. The results show that the metal-fluoropolymer cladding significantly reduced the peak value of overpressure of shock wave and impulse, but the reduction is similar to the charge coated by inert cladding, which means that secondary reaction of the metal-fluoropolymer cladding has no significant contribution to the overpressure of shock wave and impulse. The cladding can effectively improve the gas temperature and quasi-static pressure after the explosion of charges in the tank. When the mass ratios of metal-fluoropolymer to charge are about 0.30 and 0.63, the highest temperature rise of the gas in the tank reach 291K and 422K, respectively, which are up to 14% and 66% higher than that of the naked charge(254K), while the quasi-static pressure reach 0.105MPa and 0.131MPa, respectively, which are 10% and 38% higher than that of the naked charge.Indicating that when η is 0.63, it can promote the reaction degree of charge.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:11
Main heading:Metals
Controlled terms:Cladding (coating) - Explosions - Fluorine containing polymers - Shock waves - Tanks (containers)
Uncontrolled terms:Charge-mass-ratio - Explosion mechanics - Fluoropolymer coating - Highest temperature - Internal explosion - Quasi-static pressure - Secondary reactions - Specific impulse
Classification code:619.2 Tanks - 815.1 Polymeric Materials - 931 Classical Physics; Quantum Theory; Relativity
Numerical data indexing:Percentage 1.00e+01%, Percentage 1.40e+01%, Percentage 3.80e+01%, Percentage 6.60e+01%, Pressure 1.05e+05Pa, Pressure 1.31e+05Pa, Temperature 2.54e+02K, Temperature 2.91e+02K, Temperature 4.22e+02K
DOI:10.14077/j.issn.1007-7812.201901003
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

16. ---------------------------------------------------------------
Accession number:20200308059414
Title:Stability of BHN-10 under Explosion and Electric Detonation Shock Waves
Title of translation:十氢十硼酸双四乙基铵在冲击作用下的安定性
Authors:Jiang, Fan ; Wang, Xiao-Feng ; Niu, Yu-Lei ; Feng, Xiao-Jun ; Xue, Le-Xing
Author affiliation:Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China
Corresponding author:Wang, Xiao-Feng (wangxf_204@163.com)
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:631-636
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:To explore the stability of high-energy fuels under strong shock wave effect and simulate the practical enviroment, the explosion and electric detonation shock methods were used to study the stability of boron hydride salt (BHN-10) under shock effect as well as the gas and solid products produced by the decomposition of the boron hydride salt. Moreover, HMX was introduced in BHN-10 to investigate the effect on the decomposition efficiency of BHN-10. The results show that BHN-10 has good stability to the impact of detonation shock generated by single explosive. The shock wave of 1.0 GPa magnitude generated by single explosive detonation cannot promote the decomposition of BHN-10. BHN-10 has relatively low stability under the shock of electric detonation. The interaction of shock and heat generated by the plasma electric detonation method result in the decomposition of BHN-10, and the organic flammable gas products with high calorific value contain triethylamine, nitrile, paraffin, olefin or alkyne. After adding HMX into the BHN-10, the length of the carbon chain of the gas products is shortened and less than 4 carbon atoms except for triethylamine. The addition of HMX can greatly improve the decomposition efficiency of the BHN-10 fuel, and generate low carbon chain flammable gases with a higher proportion. Under the N2 atmosphere, the solid decomposition products of BHN-10 contain C60 and orthorhombic B12H16. Under the air atmosphere, the solid decomposition products are C60, B12H16, B2O3 and boric acid. After adding HMX, the solid products from the decomposition of the BHN-10 are mainly amorphous phases of C and B elements.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:20
Main heading:Shock waves
Controlled terms:Boric acid - Carbon - Convergence of numerical methods - Detonation - Explosions - Firedamp - Hydrides - Shock problems - Stability - Wave effects
Uncontrolled terms:BHN-10 - Boron hydrides - Electric detonation effect - Explosion and shocks - Explosion mechanics - Tetraethylammonium
Classification code:804 Chemical Products Generally - 804.2 Inorganic Compounds - 921.6 Numerical Methods - 931 Classical Physics; Quantum Theory; Relativity
Numerical data indexing:Pressure 1.00e+09Pa
DOI:10.14077/j.issn.1007-7812.201809002
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

17. ---------------------------------------------------------------
Accession number:20200308059436
Title:Theoretical Modeling and Analysis on Jet Formation of Biconical Liner
Title of translation:双锥药型罩射流成型的理论建模与分析
Authors:Chen, Chuang ; Tang, En-Ling
Author affiliation:
School of Equipment Engineering, Shenyang Ligong University, Shenyang; 110159, China
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:637-643
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:In order to improve the efficiency of the jet during the whole penetration process of the armor, a biconical liner with a small conical angle at the top and a large conical angle at the bottom was designed. Based on PER theory, using Gurney formula and Chanteret formula to solve the collapsing velocity of liner, a closed theoretical model of jet formation was established. Based on the theoretical model and numerical simulation, the jet shape and formation parameters corresponding to the single conical liner with 40°and 80° and the biconical liner with the top angle 40°and the bottom angle 80° were calculated and analyzed, respectively. The numerical simulation was carried out to study the structural parameters of a biconical liner including the top conical angle, height ratio of top cone, the height and liner thickness of the biconical liner, which influence the tip velocity and inflection velocity. Also the jet formation effect of the biconical liner are obtained by means of the X-ray test. The results show that the jet of single conicale liner and biconical liner are linear and bilinear after the accumulation point of particles in the head. The biconical liner jet integrates the advantages of high head velocity of upper cone and large jet diameter of lower cone. When the upper conical angle increases from 18°to 34°, the head velocity decreases by 10.4%, and the inflection point velocity decreases by 25%. When the ratio of the upper conical height to the liner height increases from 30% to 70%, the head velocity increases by 11.8%, and the inflection point velocity decreases by 19.9%. When the liner height increases from 125mm to 155mm, the head velocity increases by 4.2%, and the inflection point velocity decreases by 11.4%. When the liner thickness increases from 1.8mm to 3.4mm, the head velocity decreases by 8.4%, and the inflection velocity decreases by 18.4%. Through the comparison among theoretical analysis, numerical simulation and X-ray test results, the results are in good agreement.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:12
Main heading:Velocity
Controlled terms:Numerical models - Plasma jets - Shaped charges - X rays
Uncontrolled terms:Biconical liner - Explosion mechanics - Formation parameter - Jet penetration - Penetration process - Shaped-charge jets - Structural parameter - Theoretical modeling
Classification code:921 Mathematics - 932.1 High Energy Physics - 932.3 Plasma Physics
Numerical data indexing:Percentage 1.04e+01%, Percentage 1.14e+01%, Percentage 1.18e+01%, Percentage 1.84e+01%, Percentage 1.99e+01%, Percentage 2.50e+01%, Percentage 3.00e+01% to 7.00e+01%, Percentage 4.20e+00%, Percentage 8.40e+00%, Size 1.25e-01m to 1.55e-01m, Size 1.80e-03m to 3.40e-03m
DOI:10.14077/j.issn.1007-7812.201904004
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.

18. ---------------------------------------------------------------
Accession number:20200308059383
Title:Demilitarization Process Optimization of Isopropyl Nitrate
Title of translation:硝酸异丙酯的去能工艺优化
Authors:Chen, Yong-Kang ; An, Zhen-Tao ; Chen, Ming-Hua ; Lü, Tao ; Zhao, Tian-Ce ; Li, Xiao-Hui
Author affiliation:Troops 63850 of People's Republic Army, Baicheng; Jilin; 137000, ChinaShijiazhuang Campus of Army Engineering University, Shijiazhuang; 050003, ChinaOrdnance Technology Research Institute, Shijiazhuang; 050003, China
Source title:Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title:Huozhayao Xuebao
Volume:42
Issue:6
Issue date:December 1, 2019
Publication year:2019
Pages:644-650
Language:Chinese
ISSN:10077812
CODEN:HUXUFP
Document type:Journal article (JA)
Publisher:China Ordnance Industry Corporation
Abstract:To solve the problem about treatment of waste isopropyl nitrate, the reductive hydrolysis method was used to deal with isopropyl nitrate. The effects of various factors on the demilitarization effect were studied by orthogonal test. The results were statistically analyzed and the optimum conditions for the reaction were determined. The influence of surfactant type and concentration on the catalytic reaction was studied. The kinetic model of the miceller catalyzed reaction was established, and the parameters including the reaction rate constant in the oil and water phases and the binding constant were calculated. Lastly, the products were separated and recycled, and the demilitarization process of isopropyl nitrate was determined. The results show that TBAB, DTAB, CTAB, DPC and DDMB can be a promotion factor of the reductive hydrolysis of isopropyl nitrate, while the SDBS and Tween-80 might be suppression factor. The optimum process conditions are: Na2S concentration of 2.64mol/L, pH value of 10, temperature of 80℃, and CTAB concentration of 3.50mmol/L.
? 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references:17
Main heading:Nitrates
Controlled terms:Catalysis - Hydrolysis - Micelles - Optimization - Process control - Rate constants - Sodium sulfide - Surface active agents - Waste treatment
Uncontrolled terms:Applied chemistry - Catalytic reactions - Catalyzed reactions - Demilitarization - Hydrolysis methods - Micelle catalysis - Optimum conditions - Optimum process conditions
Classification code:452.4 Industrial Wastes Treatment and Disposal - 801.3 Colloid Chemistry - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804.2 Inorganic Compounds - 921.5 Optimization Techniques
Numerical data indexing:Molar_Concentration 2.64e+03mol/m3, Molar_Concentration 3.50e+00mol/m3
DOI:10.14077/j.issn.1007-7812.201807021
Database:Compendex
Compilation and indexing terms, ? 2020 Elsevier Inc.



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