液态金属改性微米Al-氟聚物的3D打印及性能表征

(1.西南科技大学 材料与化学学院,四川 绵阳 621010; 2.西南科技大学 国防科技学院,四川 绵阳 621010; 3.西南科技大学 环境友好能源国家重点实验室,四川 绵阳 621010; 4.中国工程物理研究院化工材料研究所,四川 绵阳 621900)

增材制造; 镓基液态金属; GLM; 微米铝粉; 氟聚物; 3D打印; 燃烧

3D Printing and Performance Characterization of Liquid Metal Modified Micron Al-Fluoropolymers
CHEN Ying1, ZHANG Shi-long2, CHEN Chan-juan2, HE Ao1, WU Bo3, WANG Jun4, SHEN Jin-peng1,2,3, PEI Chong-hua3

(1.School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang Sichuan 621010, China; 2.School of National Defense Science and Technology, Southwest University of Science and Technology, Mianyang Sichuan 621010, China; 3.State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang Sichuan 621010, China; 4.Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang Sichuan 621900, China)

additive manufacturing; gallium-based liquid metal; GLM; micron aluminum powder; fluoropolymer; 3D printing; burning

DOI: 10.14077/j.issn.1007-7812.202311023

备注

为了研究镓基液体金属(GLM)-Al-氟聚物的能量释放性能,制备了GLM质量分数分别为1%、3%、5%、7%的GLM-Al,通过3D打印获得了GLM-Al-氟聚物复合反应性材料; 采用SEM、EDS、XRD、XPS、DSC-TG、高速摄影仪和万能拉伸仪对GLM-Al及GLM-Al-氟聚物的微观结构、燃烧性能、力学性能等进行测试。结果表明,质量分数3%的GLM改性的GLM-Al放热量和氧化增重均最大,分别为6181J/g和42.92%; 改性前的Al-氟聚物不能被点燃,改性后GLM-Al-氟聚物可以点燃且可以持续稳定燃烧,在当量比为3.5时的燃速最大,为6.0mm/s; 此时GLM-Al-氟聚物的抗拉强度和断裂伸长率均最大,分别为1.73MPa、11486%,是改性前Al-氟聚物的1.5倍和1.3倍。
In order to study the energy release of gallium-based liquid metal(GLM)-Al-fluoropolymers, GLM-Al with GLM mass friction of 1%, 3%, 5%, 7% was prepared, and GLM-Al-fluoropolymer composite reactive materials were obtained by 3D printing. The microstructure, combustion performance and mechanical properties of GLM-Al and GLM-Al-fluoropolymers were tested by SEM, EDS, XRD, XPS, DSC-TG, high-speed video camera and universal tensile test equipments. The results show that the heat release and the oxidation weight increase of GLM-Al modified with 3% GLM is the largest, which is 6181J/g and 42.92%, respectively. Al-fluoropolymers before modification cannot be ignited, but the modified GLM-Al-fluoropolymer can be ignited and can continuour to burn stably, with the maximum burning rate of 6.0mm/s at equivalence ratio of 3.5. and the tensile strength and elongation of GLM-Al-fluoropolymers at break are the largest of 1.73MPa and 11486%, respectively, which are 1.5 times and 1.3 times higher than that of Al-fluoropolymers before modification.
·