北京航空航天大学学报 ›› 2003, Vol. 29 ›› Issue (3): 225-228.

• 论文 • 上一篇    下一篇

原子氧对O型圈泄漏率的影响

邵新杰, 张建斌, 张瑗   

  1. 北京航空航天大学 机械工程及自动化学院
  • 收稿日期:2001-09-28 出版日期:2003-03-31 发布日期:2010-09-27
  • 作者简介:邵新杰(1969-),男,河南西平人,硕士生,100083,北京.
  • 基金资助:

    国家863高技术计划资助项目(863-2-4-4-7)

Effect of Atomic Oxygen on Leakage Rate of ORing

Shao Xinjie, Zhang Jianbin, Zhang Yuan   

  1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics
  • Received:2001-09-28 Online:2003-03-31 Published:2010-09-27

摘要: 使用原子氧效应地面模拟设备对硅橡胶材料O型圈进行了原子氧暴露实验;用测压法进行了O型圈在原子氧暴露前后的泄漏率比对实验,并对实验前后O型圈表面形貌特征作了扫描电镜分析.实验表明:原子氧对O型圈表面有很大的剥蚀效应;O型圈经过原子氧暴露后,质量减少、泄漏率明显增大;暴露时间越长,表面形貌受到的损坏越严重、质量减少量越多,泄漏率也就越大.

Abstract: Experiments were conducted with an IFM ground equipment to investigate the effect of atomic oxygen on silicone rubber O-rings. By measuring the pressure between two O-rings, leakage rates between the two O-rings before and after exposure to atomic oxygen were compared. In addition, the surface characteristics of O-ring were analyzed by scanning electron microscope. All experiments provethat atomic oxygen erodes the surface of O-ring seriously, resulting in a weight loss and a weakened sealing capacity of the O-ring. The results show that the surface damage, the weight loss and the leakage rate of an O-ring all increase in proportion to its of the time exposed to atomic oxygen.

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