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�������պ����ѧѧ�� 2009, Vol. 35 Issue (7) :824-827    DOI:
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Anti-atomic oxygen properties of silicone coating modified by nano-ZnO
Wang Jing, Li Weiping, Chen Yichi, Zhu Liqun*
Key Laboratory of Aerospace Materials and Performance (Ministry of Education), Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� To improve the anti-atomic oxygen properties of silicone coating, nano-ZnO modified by silane coupling reagent was filled in the silicone resin and nano-ZnO/silicone composite coating on polyimide film was obtained. Polyimide with and without nano-ZnO/silicone coating was exposed to atomic oxygen(AO) in a ground-based AO effect simulation facility. The modified nano-ZnO particles were uniformly distributed within the silicone coating so that micro-cracks occurred during film-forming of the silicone were eliminated effectively. The AO experiment results indicate that polyimide is significantly eroded which is characterized by substantial weight loss and change of surface morphologies; nano-ZnO/silicone coatings exhibit excellent properties for anti-atomic oxygen effects with little variation in weight or morphology. The anti-oxygen properties of the coatings were improved along with the increase of nano-ZnO content.
Keywords�� nano-ZnO   modification   silicone   atomic oxygen     
Received 2008-06-16;
Fund:

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About author: �� ��(1983-),Ů,ɽ����̨��,˶ʿ��,wangjing0131@mse.buaa.edu.cn.
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�� ��, ����ƽ, ���ݳ�, ����Ⱥ.����ZnO-�л��踴��Ϳ��Ŀ�ԭ������ʴ����[J]  �������պ����ѧѧ��, 2009,V35(7): 824-827
Wang Jing, Li Weiping, Chen Yichi, Zhu Liqun.Anti-atomic oxygen properties of silicone coating modified by nano-ZnO[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(7): 824-827
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