After storage period of 1.5 years,then 0,5,10,20 days and 60 days hygrothermal test were carried out for nitrile rubber,fluororubber and fluorosilicone rubber,the appearance,mass gain,Shore A hardness,tensile strength,elongation at break and set after break were investigated in the dry and wet conditions.The results show that different samples had distinct moisture absorbing performance.After storage and hygrothermal environment,the nitrile rubber less affected; the fluororubber absorbed a amount of moisture,but did not produce significant effects of aging on the hardness and the mechanical properties; the fluorosilicone rubber significant aged after the storage,and hygrothermal environment speeded up the aging process.The nitrile rubber and fluororubber suitable for storage in the hygrothermal environment.%对选择典型的丁腈橡胶、氟橡胶和氟硅橡胶材料先开展1.5年储存期老化实验,再进行0,5,10,20天和60天的湿热老化实验研究.分别对选取的三种典型橡胶材料在实验前后的外观、增重率、邵氏A硬度、拉伸强度、拉断伸长率和拉断永久变形等性能的对比分析.得出结论:三种典型橡胶材料中,湿热环境对储存后的丁腈橡胶影响较小；氟橡胶的吸湿量较大,但没有对材料的硬度和拉伸性能产生明显的老化影响,氟硅橡胶在储存期后就已经出现明显老化迹象,湿热环境会加快氟硅橡胶的老化过程.
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