航天器用Parylene-C涂覆材料空间辐照适用性研究
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中国航天宇航元器件工程中心,北京 100094

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TB34

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Study on Space Irradiation Adaptability of Parylene-C Coating Material for Spacecraft
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China Aerospace Components Engineering Center,Beijing 100094

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    摘要:

    派瑞林(Parylene)薄膜主要用于功率电刷的三防,确保电功率的稳定传输。本文对两种规格(17和27 μm)Parylene薄膜的厚度、热性能、绝缘性能、在铍青铜上的附着性能以及耐空间辐照性进行了研究。结果表明:通过真空气相沉积法制备的Parylene-C涂覆材料厚度误差可控在2 μm内;膜层在铍青铜上的附着力等级为1级,薄膜热分解温度为453 ℃,两种厚度薄膜击穿电压分别为3.65 kV(17 μm)和5.27 kV(27 μm);经2.5×1015 p/cm2质子辐照后,膜层外观均完好,附着性能、热性能、绝缘性能仍满足工程使用需求;经2.5×1016 e/cm2电子辐照后,膜层出现严重开裂、起皮现象。对电子辐照前后膜层的热性能、红外结构等进行了进一步的研究,分析了电子辐照后膜层的失效机理并获得了Parylene-C涂覆材料膜层耐空间电子辐照上限为1×1014 e/cm2

    Abstract:

    Parylene-C film was mainly used for three-proofings of power brushes to ensure the stable transmission of electric power. The thickness, thermal ability, insulation performance,adhesive force on beryllium bronze and space irradiation resistance of Parylene-C film (specifications:17 and 27 μm) were studied.The results show that the thickness error of Parylene-C film made by vaccum gas phase deposition can be controlled within 2 μm;the adhesion of Parylene-C on beryllium-bronze is 1 grade; thermal decomposition temperature is 453 ℃;the breakdown voltage of 17 and 27 μm Parylene-C film are 3.65 and 5.27 kV, respectively; the appearance is intact and adhesive force, thermal ability,insulation performance of Parylene-C film can meet the requirements of engineering application after 2.5×1015 p/cm2 proton irradiation. However,serious cracks and peelings occurr on Parylene-C film after 2.5×10 16 e/cm2 electron irradiation.At last, the thermal properties and FT-IR of Parylene-C film are further studied before and after electron irradiation,by which, the failure mechanism is analyzed and the electron irradiation upper limit 1×1014 e/cm2 is obtained.

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牛虎,刘泊天,李岩,高鸿,邢焰.航天器用Parylene-C涂覆材料空间辐照适用性研究[J].宇航材料工艺,2023,53(2):42-48.

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历史
  • 收稿日期:2022-07-23
  • 最后修改日期:2023-04-05
  • 录用日期:2023-01-03
  • 在线发布日期: 2023-04-26
  • 出版日期: 2023-04-30
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