北京航空航天大学学报 ›› 2012, Vol. 38 ›› Issue (12): 1666-1670.

• 论文 • 上一篇    下一篇

溶胶-凝胶法提高树脂抗原子氧性能的试验

袁剑, 赵小虎   

  1. 北京航空航天大学 航空科学与工程学院, 北京 100191
  • 收稿日期:2011-09-01 出版日期:2012-12-30 发布日期:2013-01-09
  • 基金资助:
    中央基本科研业务费北京航空航天大学领航创新基金资助项目(YWF-10-01-A06)

Experimental study on improving AO-resistance of resin using sol-gel method

Yuan Jian, Zhao Xiaohu   

  1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2011-09-01 Online:2012-12-30 Published:2013-01-09

摘要: 为提高航天器用树脂基材料的抗原子氧剥蚀性能,将正硅酸乙酯(TEOS,Tetraethyl Orthosilicate)加入环氧树脂溶液中,采用溶胶-凝胶法,制备出SiO2/环氧杂化材料.在空间环境原子氧效应地面模拟设备中,对材料试样开展了抗原子氧剥蚀性能评估试验,总结了试验前后试样的质量、表面形貌和表面成分的变化特点,并分析了溶胶-凝胶所得杂化材料抗剥蚀性能提高的机理.分析认为:溶胶-凝胶反应过程中在树脂基体内生成的聚硅氧烷和SiO2,以及原子氧作用下杂化材料表面生成的SiO2保护层,是杂化材料抗剥蚀性能得以提高的主要原因.

Abstract: To improve the atomic oxygen (AO) resistance of the resin in low earth orbit, tetraethyl orthosilicate (TEOS) was added into the epoxy resin(EP) solution. The inorganic phases of SiO2 was in-situ generated using sol-gel method and the SiO2/EP hybrid materials were obtained. The ground-based simulation experiments were carried out to evaluate the AO-resistance of the SiO2/EP hybrid materials. The mass, surface morphology and the surface composition of the samples were compared before and after the AO experiments. The improving mechanism of the AO-resistance was analyzed. There are two essential reasons of the AO-resistance of the hybrid material that the silicones and silica were generated in the resin matrix during sol-gel process and the silica protective coating was formed on the sample surface in AO environment.

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