火炸药学报

为研究聚合物基铝热剂的性能,制备了以GAP-ETPE和F2311作为黏结剂的Al/CuO纳米铝热剂。然后利用油墨直写技术(DIW)配制出固含量高达80%的含能油墨GAP/F2311-MICs(GF-MICs),在此基础上加入高氯酸铵(AP),探索AP/GF-MICs模型推进剂的可打印性,并研究了AP含量对于AP/GF-MICs模型推进剂燃烧性能的影响规律; 采用FTIR方法测试了混合黏结剂的相容性和稳定性,通过TG-DSC和静态拉伸研究了GF-MICs纳米铝热剂的热性能,并测试了其流变性和聚合物的力学性能。结果表明,GAP-ETPE与F2311质量比为1:4时,混合黏结剂的相容性、稳定性和力学性能最好; 纳米Al/CuO的加入使得F2311和GAP-ETPE的热分解温度分别提前89.0℃和32.9℃; 随着模型推进剂中Al/CuO含量的增加,AP高温分解温度最高提前101.58℃,预先点火反应提前29.68℃,放热量提升135%; GF-MICs能够很好地提高模型推进剂的反应活性和燃烧速率,且当模型推进剂中Al/CuO质量分数由10%增至40%时,到达P_max时间缩短了71%,平均燃烧速率提升了293%。

In order to study the performance of polymer based aluminothermal agents, Al/CuO nano aluminothermal agents with GAP-ETPE and F2311 as binders were prepared and then an energetic ink GAP/F2311-MICs(GF-MICs)with a solid content of up to 80% was prepared by direct ink writing(DIW)method. On this basis, ammonium perchlorate(AP)was added to explore the printability of AP/GF-MICs model propellants, and the influence of AP content on the combustion performance of AP/GF-MICs model propellants was studied. The compatibility and stability of the mixed binder were tested using FTIR method, and the thermal properties of GF-MICs nano aluminothermal agents were studied through TG-DSC and static stretching. The rheological properties and mechanical properties of the polymer were also tested. The results show that the compatibility, stability, and mechanical properties of the mixed adhesive are the best when the mass ratio of GAP-ETPE to F2311 is 1:4. The addition of nano Al/CuO advances the thermal decomposition temperatures of F2311 and GAP-ETPE by 89.0℃ and 32.9℃, respectively. With the increase of Al/CuO content in the model propellant, the highest high-temperature decomposition temperature of AP is advanced by 101.58℃, the pre-ignition reaction is advanced by 29.68℃, and the heat release is increased by 135%. GF-MICs can effectively improve the reaction activity and combustion rate of model propellants, and when the mass fraction of Al/CuO in the model propellant increases from 10% to 40%, the time to reach P_max is shortened by 71%, and the average combustion rate is increased by 293%.

引言
1 实验
2 结果与讨论
3 结论

$表1 不同GF聚合物溶液的组成 Table 1 Composition of GAP/F2311polymer solutions with different mass fractions$

表1 不同GF聚合物溶液的组成
Table 1 Composition of GAP/F2311polymer solutions with different mass fractions

$图1 不同GAP含量的GF聚合物溶液 Fig.1 GF polymer solutions with different mass fractions$

图1 不同GAP含量的GF聚合物溶液
Fig.1 GF polymer solutions with different mass fractions

$图2 不同质量分数GF聚合物溶液的FTIR谱图 Fig.2 FTIR spectra of GF with different mass fractions$

图2 不同质量分数GF聚合物溶液的FTIR谱图
Fig.2 FTIR spectra of GF with different mass fractions

$表2 不同GF聚合物—N3与—CF2峰面积比 Table 2 Peak area ratio of —N3 and —CF2 in GF polymer with different mass fractions$

表2 不同GF聚合物—N3与—CF2峰面积比
Table 2 Peak area ratio of —N3 and —CF2 in GF polymer with different mass fractions

$图3 不同GF聚合物的胺基吸收峰FTIR谱图 Fig.3 FTIR spectra of amino absorption peaks with different mass fractions of GF$

图3 不同GF聚合物的胺基吸收峰FTIR谱图
Fig.3 FTIR spectra of amino absorption peaks with different mass fractions of GF

$表3 不同GF聚合物胺基吸收峰FTIR参数 Table 3 FTIR parameters of amino absorption peaks for GF with different mass fractions$

表3 不同GF聚合物胺基吸收峰FTIR参数
Table 3 FTIR parameters of amino absorption peaks for GF with different mass fractions

$图4 不同质量分数GF的储能模量-振荡频率曲线 Fig.4 Energy storage modulus oscillation frequency curves for different mass fractions of GF$

图4 不同质量分数GF的储能模量-振荡频率曲线
Fig.4 Energy storage modulus oscillation frequency curves for different mass fractions of GF

表4 不同GF聚合物的力学性能<br/>Table 4 Mechanical properties of different GF polymers

表4 不同GF聚合物的力学性能
Table 4 Mechanical properties of different GF polymers

图5 聚合物溶液与含能油墨黏度-剪切速率变化曲线<br/>Fig.5 Viscosity-shear rate curve of polymer solution and energetic ink

图5 聚合物溶液与含能油墨黏度-剪切速率变化曲线
Fig.5 Viscosity-shear rate curve of polymer solution and energetic ink

图6 直接书写GF-MICs的(a)实物照片、(b)低倍数扫描电镜图、(c)中倍数扫描电镜图、(d)高倍数扫描电镜图及(e)X射线能谱<br/>Fig.6 Direct writing of GF-MICs(a)physical photos,(b)low magnification scanning electron microscopy,(c)medium magnification scanning electron microscopy,(d)high magnification scanning electron microscopy, and(e)X-ray energy spectrum

图6 直接书写GF-MICs的(a)实物照片、(b)低倍数扫描电镜图、(c)中倍数扫描电镜图、(d)高倍数扫描电镜图及(e)X射线能谱
Fig.6 Direct writing of GF-MICs(a)physical photos,(b)low magnification scanning electron microscopy,(c)medium magnification scanning electron microscopy,(d)high magnification scanning electron microscopy, and(e)X-ray energy spectrum

表5 GAP-ETPE、F2311、GF、GF-MICs的热失重参数<br/>Table 5 Thermogravimetric parameters of GAP-ETPE, F2311, GF and GF-MICs

表5 GAP-ETPE、F2311、GF、GF-MICs的热失重参数
Table 5 Thermogravimetric parameters of GAP-ETPE, F2311, GF and GF-MICs

图7 GAP-ETPE、F2311、GAP/F2311、GF-MICs的TG和DTG曲线<br/>Fig.7 TG and DTG curves of GAP-ETPE, F2311, GAP/F2311, and GF-MICs

图7 GAP-ETPE、F2311、GAP/F2311、GF-MICs的TG和DTG曲线
Fig.7 TG and DTG curves of GAP-ETPE, F2311, GAP/F2311, and GF-MICs

图8 GF-MICs的DSC曲线<br/>Fig.8 DSC curve of GF-MICsGF-MICs

图8 GF-MICs的DSC曲线
Fig.8 DSC curve of GF-MICsGF-MICs

图9 不同AP含量下模型推进剂的P—t曲线<br/>Fig.9 P—t curves of model propellants under different AP contents

图9 不同AP含量下模型推进剂的P—t曲线
Fig.9 P—t curves of model propellants under different AP contents

表6 不同AP含量下AP/GF-MICs模型推进剂的P—t曲线参数<br/>Table 6 P—t curve parameters of AP/GF-MICs model propellants with different AP contents

表6 不同AP含量下AP/GF-MICs模型推进剂的P—t曲线参数
Table 6 P—t curve parameters of AP/GF-MICs model propellants with different AP contents

图10 不同AP含量下AP/GF-MICs模型推进剂的高速摄影图<br/>Fig.10 High speed photography of AP/GF-MICs model propellants with different AP contents

图10 不同AP含量下AP/GF-MICs模型推进剂的高速摄影图
Fig.10 High speed photography of AP/GF-MICs model propellants with different AP contents

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备注

引言

1 实验

2 结果与讨论

3 结论

期刊信息

备注

引言

1 实 验

2 结果与讨论

3 结 论

期刊信息

1 实验

3 结论