有机硅热控涂层在模拟空间环境下的原位性能

研究了热控涂层在地面模拟空间环境下的性能变化：原位测定了紫外、电子辐照过程中热控涂层的性能变化；考察了K2SiO3包覆ZnO情况对涂层性能的影响；用扫描电镜（SEM）对辐照前后涂层表面微观形貌的变化进行了观察。结果表明，无论是缩合型的硅树脂还是加成型硅橡胶，在加入ZnO填料后，耐紫外辐照的能力都有明显的提高；不同种类涂层在真空紫外辐照作用下表现出不同规律。硅酸钾包覆ZnO对于有机硅树脂和加成型硅橡胶作基料的热控涂层影响也不同。加成型硅橡胶制备得到的热控涂层有非常优异的抗电子辐照性能。

Behaviors of Addition Type Silicone Thermal Control Coatings in Space Environment Simulated

The behaviors of thermal control coating in a simulated space environment are determined.The property changes of silicone thermal control coatings during the UV exposed process and electron exposed process are monitored in-situ.The property changes of different materials are compared.SEM observes the morphology of coatins.ZnO covered with K 2SiO 3 has different effects on property of coatings for both silicone rubber adhesives and silicone resin adhesives,and different bleach phenomenon is observed and its reason is discussed in briefly.