在轨温度环境对J-47C胶黏剂粘接性能的影响

Effects of Thermal Environment in Orbit on Adhesive Properties of J- 47C Adhesive

为考察在轨温度环境对J-47C结构胶黏剂粘接性能的影响,利用动态热机械分析和热重分析方法,对其Tg、热分解温度进行了测试,掌握了胶黏剂的耐热指标。通过不同温度下力学性能测试,温度冲击及真空热循环试验研究了卫星特殊的温度环境对胶黏剂性能的影响。结果表明,J-47C胶黏剂在高温以及真空热循环和温度冲击后其仍具有较高的力学强度保持率,满足卫星的温度环境对胶黏剂性能的需求。

To investigate the influence of thermal environment in orbit on the adhesive properties of J-47C structural adhesive, Ts and weight-loss temperatures of J-47C were acquired by DMA and TGA. Tensile lap-shear strength of the adhesive at different temperatures, before and after thermal shock, and after vacuum thermal cycle en- vironment test was measured. The results show that the tensile-strength was of slightly changes after these environment tests. The J-47C structural adhesive can achieve the requirements of the special temperature environments announced by the usage of spacecrafts.