北京航空航天大学学报 ›› 2009, Vol. 35 ›› Issue (7): 824-827.

• 论文 • 上一篇    下一篇

纳米ZnO-有机硅复合涂层的抗原子氧剥蚀性能

王 静, 李卫平, 陈贻炽, 朱立群   

  1. 北京航空航天大学 空天材料与服役教育部重点实验室, 北京 100191
  • 收稿日期:2008-06-16 出版日期:2009-07-31 发布日期:2010-09-16
  • 作者简介:王 静(1983-),女,山东烟台人,硕士生,wangjing0131@mse.buaa.edu.cn.
  • 基金资助:

    航天科技创新基金资助项目(CASC0505)

Anti-atomic oxygen properties of silicone coating modified by nano-ZnO

Wang Jing, Li Weiping, Chen Yichi, Zhu Liqun   

  1. Key Laboratory of Aerospace Materials and Performance (Ministry of Education), Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2008-06-16 Online:2009-07-31 Published:2010-09-16

摘要: 为了进一步提高有机硅涂层的抗原子氧剥蚀能力,采用经硅烷偶联剂处理的纳米ZnO微粒,在聚酰亚胺薄膜基材表面制备出纳米ZnO-有机硅复合涂层.通过原子氧地面模拟试验,研究了纳米ZnO-有机硅复合涂层的质量损失、表面形貌及化学成分的变化规律.结果表明:经表面处理的纳米ZnO微粒可以均匀分布在有机硅涂层中,有效消除有机硅树脂成膜过程中产生的微裂纹.经过原子氧辐照试验,没有保护涂层的聚酰亚胺基材的质量损失较大,而涂覆纳米ZnO-有机硅复合涂层具有良好的抗原子氧剥蚀性能,其质量损失和微观表面形貌变化很小,并且随着涂层中纳米ZnO含量的增加,其抗原子氧剥蚀的能力进一步增强.

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.

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