以聚酰亚胺为基底的柔性导电型第二表面的性能与应用

简略讨论了以Ｋａｐｔｏｎ为基底的柔性导电型第二表面镜的制备，描述了卫星使用的多层隔热结构及接地方法。测试数据表明加有透明导电膜的ＳＳＭ的发射率和太阳吸收率几乎没有改变，因此表明导电膜对热控或隔热效果无丝毫影响。仿照卫星实用的多层隔热结构，最外层采用导电型ＳＳＭ与无导电膜的ＳＳＭ两种材料，在接地与不接地方式下经过模拟亚暴环境的电子辐照试验，７个试样的试验结果显示出加有导电膜的ＳＳＭ防静电性能比不加导电膜的试样极大地提高了。在接地条件下，可把表面电势有效控制在百伏以下，并有力地抑制了表面放电。即使不接地也可降低表面电势值。实验证实表面改性技术和接地技术相结合可以实现最佳的防止卫星表面充放电效果。

PERFORMANCE AND APPLICATION OF FLEXIBLE CONDUCTIVE TYPE SECONDARY SURFACE MIRROR WITH KAPTON SUBSTRATE

The preparation of the conductive secondary surface mirror with flexible Kapton substrate has been briefly discussed in this paper.The structure of multilayer insulation and the grounding method have also been illustrated. The measured data show f that te solar absorptivity and emittance of the SSM coated TO film are almost not changed. So the TO film on SSM surface will have no influence on its performance of thermal control.According to the application of multilayer structure on satellite and in order to compare the difference of controlling chargingperformance,the conductive and non-conductive type SSM have been used on outside of the structure for test.In simulated substorm environment the test results of seven samples indicate that the antistatic perfo rmance of SSM With To film is excellent compared with uncoated TO film SSM. When the sample with TO film is grounded, its surface potential. can be controlled below 100 volts and the discharging phenomena on surface are also repressed effectually.The experiment proves that the surface modification in combination with the grounding technology can provide the best effect on preventing satellite surface from charging/discharging.