高流动高抗冲聚丙烯的结晶行为与性能研究  

Crystallization Behaviors and Properties of High Fluidity and High Impact Polypropylene

作　　者：王艳芳[1] 娄立娟[1] 俞炜[2] 黄伟欢[1] 刘晓舟 李社青[4] 魏静[1] 

机构地区：[1]中国石油天然气股份有限公司石油化工研究院,北京102206 [2]上海交通大学化学化工学院,上海200240 [3]中国石油股份有限公司,北京100007 [4]中国石油天然气股份有限公司华东化工销售公司,上海201208

出　　处：《中国塑料》2015年第8期59-65,共7页China Plastics

摘　　要：通过差示扫描量热法研究了高流动高抗冲聚丙烯专用料K9928的非等温及等温结晶行为，并与国内市场典型牌号K7726H进行了对比分析。结果表明，K9928与K7726H的结晶度非常接近；K9928的起始结晶温度比K7726H高出3～5℃，低降温速率下的结晶速率较高，降温速率为50℃／min以上时，结晶温度区间较大；K9928内嵌段共聚物含量较多且组成相近，在韧性方面具有优势。The isothermal and non-isothermal crystallization behavior of special material PP （K9928）, a kind of high fluidity and high impact polypropylene, had been investigated by differential scanning calorimetry（DSC）, and a further comparison with a typical PP（K7726H） in domestic market had been made. The results indicate that the onset crystallization temperature of K9928 was 3-5 ℃ higher than the contrastive sample and the higher crystallization rate could be observed for K9928 at low cooling rate. However, the span from onset temperature to end temperature was wider when the cooling rate is higher than 50 ℃/min, which leaded to a longer crystallization duration. Impact resistance of K9928 depended on its more block copolymers with similar structure.

关 键 词：聚丙烯 高流动性 高抗冲击性能 结晶行为 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]