苯乙烯类热塑性弹性体对IR／CR的增容作用

采用相差显微镜及Ｍｏｏｎｙ－Ｒｉｖｌｉｎ方程中的２Ｃ１和２Ｃ２等方法，研究了少量ＳＩＳ，ＳＢＳ，α－甲基苯乙烯和丁二烯的三嵌段共聚物（ＭＳＢＭＳ）对ＩＲ／ＣＲ共混物相态结构、交联行为和力学性能的影响。结果表明，加入ＳＩＳ，ＳＢＳ，ＭＳＢＭＳ厅明显降低分散相尺寸，使体系分布均匀，提高了硫化胶的交联密度和拉伸强度。降低节体系煌内部损耗。对ＩＲ／ＣＲ共混物的增容效果，以ＳＩＳ为最好，ＳＢＳ次之，ＭＳＢＭ

COMPATIBILIZATION EFFECT OF STYRENIC THERMOPLASTIC ELASTOMER ON IR/CR

The effect of IR/CR blends by adding small amount of styrenic thermoplastic elastomer(less than 10% mass)on the morphology,network and mechanical properties was studied by optical microscopy and Moony-Rivlin equation.The results showed that SIS,SBS and MSBMS could significantly reduce the domain size,increase the crosslink density and tensile strength of the vulcanizates, and decrease mechanical loss of the system.The compatibilization of the copolymers on IR/CR blends was in the order of SIS,SBS,MSBMS.