β晶型聚丙烯的研究  

Research of Beta Crystal Type Polypropylene

作　　者：张建军[1] 毛晨曦[1] 李训刚[1] 王克智[1] 

机构地区：[1]山西省化工研究所(有限公司),山西太原030021

出　　处：《广东化工》2013年第21期109-110,共2页Guangdong Chemical Industry

摘　　要：聚丙烯因其良好的机械性能、加工性能、价格低廉而备受关注,但其低温脆性大、热变形温度低、易收缩等缺点也制约了该类材料的应用。聚丙烯性能的优化也成为学术界研究的热点问题。对聚丙烯的改性关键是对其分子链规整度、球晶尺寸的调控,β成核剂改性是聚丙烯改性中相对简单易行的方法。文章在综述了聚丙烯成核机理的基础上阐述了β成核剂的应用研究。Polypropylene had attracted much attention because of its ~ood mechanical properties, processabilitv, low prices, but its low temperature brittleness, low heat distortion temperature, easy to shrink and other shortcomings also restricted the application of these materials. Polypropylenc performance optimization had become a hot issue in academic studies. The key of modified polypropylene was molecular chain of its regularity, spherulite size regulation, β nucleating agent modified polypropylene was relatively simple and easy method. The paper summarized the polypropylene nucleation mechanism elaborated on the basis of β nucleating agent applied research.

关 键 词：聚丙烯 Β成核剂 大分子成核剂 

分 类 号：TQ[化学工程]