橡胶改性PP的结晶行为和力学性能  

CRYSTALLIZATION BEHAVIOR AND MECHANICAL PROPERTIES OF RUBBER/PP BLENDS

作　　者：马永梅[1] 过俊石[1] 谢洪泉[1] 李耀会[1] 

机构地区：[1]华中理工大学化学系,湖北省化学研究所

出　　处：《合成橡胶工业》1996年第6期361-363,共3页China Synthetic Rubber Industry

摘　　要：通过广角Ｘ射线衍射法，研究了ＳＳＢＲ，ＢＲ，ＥＳＢＲ分别与ＰＰ的共混物中ＰＰ的结晶行为，认为ＳＳＢＲ，ＢＲ和ＥＳＢＲ均具有非均相成核能力，并在橡胶质量分数为１０％时，其ＰＰ的β晶型含量（Ｋ＿β）分别为１３．５％，１１．７％，２０．７％。Ｋ＿β的差异可以从橡胶与ＰＰ的相容性解释。还研究了ＰＰ／ＢＲ共混物的力学性能与ＢＲ含量的关系，当ＢＲ含量为１０％时，常温（２５℃）缺口冲击强度最大，为７．８ｋＪ／ｍ￣２。The crystallization behavior of the blends of PP with SSBR,BR,ESBR were examined by wide-angle X-ray diffraction.It was found that rubber bad the maximum hetergeneous nucleating ability and the amount of the β-form(Kβ)were 13. 5%,11. 7%,20.8% for SSBR,BR,ESBR respectively, when the mass ratio of rubber/PP was 10/90.The difference of Kβ was caused by the compatibility between rubber and PP.The results of mechanical properties of the PP/BR blends showed the maximum notched impact strength of blend 7.8KJ/m2 when the mass ratio of BR/PP was 10/90.

关 键 词：聚丙烯 橡胶 共混物 结晶 改性 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]