直角滑环式组合型金属橡胶密封件的密封机理及应用研究

针对具体的需求背景，将金属橡胶技术成功的应用于密封结构中。对金属橡胶与聚四氟乙烯组合型密封环的结构设计、制备工艺、主要影响参数、密封性能及模拟试验等进行了系统研究。分析了聚四氟乙烯的表面质量及金属橡胶元件的性能对组合型密封环密封性能的影响。推导了组合型密封环的压缩变形量及接触压力的计算公式。研究结果表明，金属橡胶与聚四氟乙烯组合型密封环的尺寸稳定性及密封性能，完全满足实际工况提出的性能指标要求，其泄漏量是实际工况要求的十分之一。研究结果对利用金属橡胶技术解决空间环境下的密封问题具有重要的参考价值。

Sealing mechanism and application research of combined MR sealing element

According to concrete needs,MR sealing techniques is first applied into the contact sealing fields in this paper.The design of structure,manufacturing technology,effect parameters,sealing performance and simulation experiments are researched systematically.The effects of surface quality of Teflon cover and the performance of MR material on the property of combined sealing rings are explored.The calculation methods of deformation and contact press force of sealing rings are derived.Research results show that the dimensional stability and sealing performance of MR Teflon sealing rings are suitable for the real needs, and the leakage are only ten percentage of real sealing condition.The results will be useful for the solving of sealing problems occurred in aerospace condition in our country by the help of MR techniques.