真空橡胶密封,除了橡胶密封结构的正确设计外,合理选择密封弹性体是关键。橡胶的耐热性、耐压缩变形、透气性,出气率、升华以及漏气率等是影响真空密封性能的几个主要因素。 1.橡胶的耐热性在获得真空时,需要对系统或元件烘烤去气。烘烤温度一般在150℃以下和10~(-7)托的真空时,可以采用丁腈橡胶;如果烘烤温度在200℃以上,并要求在超高真空环境中工作, Vacuum rubber seal, in addition to the correct design of the rubber seal structure, the rational choice of sealing elastomer is the key. Rubber heat resistance, resistance to compression deformation, permeability, the rate of gas, sublimation and leakage rate is the impact of vacuum sealing performance of several major factors. 1. Rubber heat resistance In obtaining a vacuum, you need to bake the system or components. Baking temperature is generally below 150 ℃ and 10 ~ (-7) Torr vacuum, you can use nitrile rubber; if the baking temperature above 200 ℃, and requires work in the ultra-high vacuum environment,