液态金属改性微米Al-氟聚物的3D打印及性能表征  

3D Printing and Performance Characterization of Liquid Metal Modified Micron Al-Fluoropolymers

作　　者：陈颖[1] 张世龙 陈婵娟 何奥 伍波 王军[4] 沈金朋[1,2,3] 裴重华 CHEN Ying;ZHANG Shi-long;CHEN Chan-juan;HE Ao;WU Bo;WANG Jun;SHEN Jin-peng;PEI Chong-hua(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;School of National Defense Science and Technology,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;State Key Laboratory of Environment-friendly Energy Materials,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang Sichuan 621900,China)

机构地区：[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

出　　处：《火炸药学报》2024年第5期430-437,I0004,共9页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金(No.22275150)。

摘　　要：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6181 J/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6.0 mm/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1.73 MPa、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 6181 J/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 6.0 mm/s at equivalence ratio of 3.5.and the tensile strength and elongation of GLM-Al-fluoropolymers at break are the largest of 1.73 MPa and 11486%,respectively,which are 1.5 times and 1.3 times higher than that of Al-fluoropolymers before modification.

关 键 词：增材制造 镓基液态金属 GLM 微米铝粉 氟聚物 3D打印 燃烧 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O62[理学—有机化学]