中国空间科学技术

中国空间科学技术

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真空紫外辐射对空间有机防护涂层的降解研究

张蕾;严川伟;陈荣敏;金燕利;孙刚;童靖宇;庞贺伟;   

  1. 中国科学院金属研究所,中国科学院金属研究所,中国科学院金属研究所,海军装备部沈阳军事代表局,北京卫星环境工程研究所,北京卫星环境工程研究所,北京卫星环境工程研究所 沈阳110016,沈阳110016,沈阳110016,沈阳110031,北京100029,北京100029,北京100029
  • 发布日期:2007-02-25

Ground-based Investigations of Vacuum Ultraviolet Radiation Behaviors of Organic Protective Coatings

Zhang Lei~1 Yan Chuanwei~1 Chen Rongmin~1 Jin Yanli~2Sun Gang~3 Tong Jingyu~3 Pang Hewei~3(1 Institute of Metal Research,The Chinese Academy of Sciences,Shenyang 110016)(2 Navy Equipment Department,Militray Deputy Part to Shenyang,Shenyang 110031)(3 Beijing Institute of Spacecraft Environment Engineering,Beijing 100029)   

  • Online:2007-02-25

被引次数

21

摘要： 对环氧树脂、醇酸树脂、聚氨酯及有机硅树脂防护涂层在真空紫外线作用下的表面层变化进行了研究。发现在所采用的氘灯真空紫外光源的作用下,环氧树脂、醇酸树脂、聚氨酯质损较大,且表面出现“暗化”现象;有机硅树脂质损相对较小,在连续辐照过程中涂层表面颜色不发生改变,抗紫外老化能力强。光电子能谱(XPS)、红外光谱(FTIR)对试验前后样品进行表征研究,探索真空紫外效应的影响规律,对真空紫外与涂层的反应机理也做了相应的分析:结构不同的有机涂层对真空紫外(VUV)的敏感程度不同,含环氧环、C-N和支链的有机涂层,最易受到VUV破坏而裂解;Si-O、苯环、C=O,在VUV辐照环境下相对稳定。

关键词: 真空紫外辐射, 有机涂层, 降解, 航天器

Abstract: For the protected polymers in aerospace,the surface change of organic protective coatings in the vacuum ultraviolet radiation was investigated.The results show that VUV irradiation makes organic coatings produce mass loss,whose amount is in large quantity at initial stage and does not almost increase again as the extension of exposure.It is obviously that color of organic coatings except Siloxane have great change.So Siloxane is better in resistance to photo-aging than the others,VUV irradiation can case scission of various chemical bonds in polymers,for example,C-N,Si-CH_3,C-C,epoxy ring,but others such as SI-0,benzene ring,C=O are relatively stable under the environment of VUV irradiation.