【摘要】 通过对硅橡胶材料Ｏ型圈在模拟空间环境下的泄漏率实验，研究了空间密封中Ｏ型圈的压缩率、温度、Ｏ型圈的载荷衰减和原子氧辐射对其泄漏率的影响．实验结果发现，Ｏ型圈的泄漏率随Ｏ型圈压缩率的增大而减小，在－５──１００℃的温度范围内，随温度的升高而增大，而Ｏ型圈的载荷衰减和原子氧辐射都对Ｏ型圈的泄漏率有不同程度的影响．更多还原

【Abstract】 Experimental research on leakage rate of silastic O-ring at simulative space environment is conducted to investigate the effect of compression ratio, temperature, load decay of O-ring and radialization of atomic oxygen on the leakage rate of O- ring. The results show that the leakage rate of O-ring decreases with the increase of compression ratio, increases with the rise of temperature, and it is affected by the load decay of O-ring and radialization of atomic oxygen at various degrees.更多还原