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本文报道了RTV-Ⅱ黑漆和13-17白色涂层二种航天器温控材料的电导在综合空间环境条件下的实验结果。实验表明RTV-Ⅱ涂层材料的电导从1984年到1986年,几乎每年下降一个量级,因而充电状态明显改变。13-17涂层材料的电导对空间真空环境响应不明显,但对电子辐照和光辐照响应显著,尤其对光辐照存在强烈的记忆效应。预测该涂层在轨道上由光照区进入星蚀区也不会出现明显充电现象。
The experimental results of the conductance of two spacecraft temperature control materials RTV-Ⅱ black paint and 13-17 white coating under comprehensive space environment conditions are reported in this paper. Experiments show that the conductivity of RTV-II coating material from 1984 to 1986, down nearly an annual order of magnitude, and thus significantly change the state of charge. The conductivity of 13-17 coating material has no obvious response to space vacuum environment, but it has significant response to electron irradiation and light irradiation. Especially, it has a strong memory effect on light irradiation. It is predicted that the coating will not be obviously charged when it enters the eclipse area from the illumination area in orbit.