摘要
通过电子万能材料试验机测试了AlH_(3)等质量和等体积替换Al粉对GAP/AlH_(3)推进剂力学性能的影响;采用扫描电镜(SEM)观察了Al粉和AlH_(3)的形貌;采用接触角法研究了Al粉和AlH_(3)与GAP的浸润性;采用原位拉伸扫描电镜、动态热机械分析(DMA)等方法研究了AlH_(3)/GAP复合物的界面黏接性能。结果表明,用AlH_(3)等质量和等体积替换Al粉,推进剂的抗拉强度和模量都升高,伸长率都降低;Al粉形状为球体,而AlH_(3)粉末形状为立方体;Al与GAP的黏附功(80.5 mN/m)小于AlH_(3)与GAP的黏附功(130.6 mN/m),而Al与GAP的界面张力(52.6 mN/m)大于AlH_(3)与GAP的界面张力(29.4 mN/m),说明AlH_(3)与GAP的浸润性优于铝粉;AlH_(3)/GAP复合物在拉伸过程中不存在明显的脱湿问题,界面黏接情况良好。
The effect of AlH_(3) with equal mass and volume of Al powder replacement on the mechanical properties of GAP/AlH_(3) propellant was tested by using an electronic universal material testing machine.The morphology of Al powder and AlH_(3) were observed by using scanning electron microscopy(SEM)equipment.The wettability of Al powder and AlH_(3) with GAP were carried out by using the contact angle method.The interfacial adhesion properties of AlH_(3)/GAP composites were investigated by using in-situ tensile scanning electron microscopy,dynamic thermo mechanical analysis(DMA).The results showed that replacing equal mass and volume of Al powder with AlH_(3) resulted in an increase in the tensile strength and modulus of the propellant,while the elongation rate decreased.The shape of Al powder is spherical,while the shape of AlH_(3) powder is cubic.The adhesive work between Al and GAP(80.5 mN/m)is lower than that between AlH_(3) and GAP(130.6 mN/m),while the interfacial tension between Al and GAP(52.6 mN/m)is higher than that between AlH_(3) and GAP(29.4 mN/m),indicating that the wettability of AlH_(3) and GAP is better than that of Al powder.The AlH_(3)/GAP composite does not exhibit significant dehumidification during the stretching process,and the interface adhesion is good.
作者
毛家淦
李洪旭
武卓
徐爽
余方源
赵志坤
彭圆坤
熊文博
哈恒欣
MAO Jia-gan;LI Hong-xu;WU Zhuo;XU Shuang;YU Fang-yuan;ZHAO Zhi-kun;PENG Yuan-kun;XIONG Wen-bo;HA Heng-xin(National Key Laboratory of Aerospace Chemical Power,Xiangyang Hubei 441003,China;Hubei Institute of Aerospace Chemistry and Technology,Xiangyang Hubei 441003,China)
出处
《火炸药学报》
北大核心
2025年第6期568-573,共6页
Chinese Journal of Explosives & Propellants
作者简介
毛家淦(2001-),男,硕士研究生。E-mail:1031227206@qq.com;通信作者:李洪旭(1973-),男,研究员。E-mail:lihongxuxiangfan@163.com。
