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未来卫星所携带的光学系统载荷温度往往很低,低温表面更容易被出气污染物分子污染,进而可能降低光学系统的性能以及其在轨使用寿命。针对以上问题,本文基于扩散理论和经典吸附动力学理论,获得了胶黏剂出气污染物在低温敏感表面详细的理论模型,利用航天器材料放气污染特性测试标准ASTM E 1559对胶黏剂出气污染物在低温敏感表面出气凝结特性进行了研究。结果表明,实验结果与理论模型具有良好的一致性,获得了胶黏剂出气污染物在低温敏感表面的凝结理论模型,用于对低温表面进行污染预估和控制,从而为污染计算与预测提供了可借鉴的手段。
Future satellite optical system load temperature is often low, low temperature surface more easily contaminated by the air pollutants, which may reduce the optical system performance and in-orbit life. In view of the above problems, based on the diffusion theory and classical adsorption kinetics theory, a detailed theoretical model of adhesive outlet air pollutants on the low temperature sensitive surface is obtained. Based on the test standard ASTM E 1559 for air release of spacecraft materials, Condensate gas condensate characteristics in the low temperature sensitive surface were studied. The results show that the experimental results are in good agreement with the theoretical model, and the theoretical model of coagulation at the low temperature sensitive surface of adhesive outlet air pollutants is obtained, which can be used to estimate and control the pollution of low temperature surface so as to provide pollution calculation and prediction Can learn from the means.