中国空间科学技术

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Identification of Molecular Contaminant in Thermal Vacuum Test by Using GC/MS

Jiao Zilong1 Pang Hewei2 Yi Zhong1 Yang Dongsheng1 Zang Weiguo1 Yu Qian1(1 Center of Assembly,Integration and Test,China Academy of Space Technology,Beijing 100094)(2 China Academy of Space Technology,Beijing,100094)   

  • Online:2008-12-25

Abstract: The contaminant collection and component identification tests were performed during the thermal vacuum tests.The witness plate was used to collect deposits,which was solved by acetone.The solution was analyzed by using GC/MS to identify compositions of the contaminants.Phthalate and siloxane were identified as the main contaminants in satellite thermal vacuum tests and solar array thermal vacuum tests.Possible source of methylphenylsiloxane in solar array thermal vacuum test may come from solar cell adhesive.