橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2010 Vol.33 No.1 P.20-23

 橡胶技术网

聚烯烃弹性体/聚丙烯热塑性弹性体的制备及力学性能

魏磊　 陈弦　 何波兵　

摘　要：以过氧化物为硫化剂,用动态硫化法制备了聚烯烃弹性体(POE)/聚丙烯(PP)热塑性弹性体,研究了硫化剂用量、填料种类和加工次数对体系力学性能的影响.结果表明,增加硫化剂用量可以提高体系的拉伸强度,降低拉伸永久变形和压缩永久变形.碳酸钙和滑石粉对POE/PP体系无明显增强作用,炭黑的增强作用较此二者明显一些,这三种填料加入后都会使体系的扯断伸长率降低而硬度增大.加入石蜡油会使体系的扯断伸长率和压缩永久变形增大、硬度和拉伸强度降低.加工次数对POE/PP体系的力学性能无明显影响,说明体系具有较好的重复加工性能.
关键词：聚烯烃弹性体;聚丙烯;热塑性弹性体;动态硫化;填料;力学性能
分类号：TQ334.2 　文献标识码：A
文章编号：1000-1255(2010)01-0020-04

Preparation and mechanical properties of polyolefin elastomer/polypropylene thermoplastic elastomer

Wei Lei（College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China）　 Chen Xian（College of Chemistry, Sichuan University, Chengdu 610064, China）　 He Bobing（College of Chemistry, Sichuan University, Chengdu 610064, China）　

Abstract：With peroxide as curing agent, the polyolefin elastomer(POE)/polypropylene(PP) thermoplastic elastomer was prepared through dynamic vulcanizing method. The effects of curing agent amount, filler species and processing times on the mechanical properties of the thermoplastic elastomer were studied. The results showed that as the amount of curing agent increased, the tensile strength increased, while the tension set and compression set decreased. Calcium carbonate and talc powder had no obvious effect of reinforcement, carbon black had better reinforcing effect than the two formers. All of these three fillers would decrease the elongation at break, while increase the hardness. Adding paraffin oil would increase the elongation at break and compression set and decrease the tensile strength and hardness. The processing times had little effect on the mechanical properties, indicating that the elastomer had better processibility in repeat processing.
Keywords：polyolefin elastomer; polypropylene; thermoplastic elastomer; dynamic vulcanization; filler; mechanical property

基金项目：国家自然科学基金资助项目(50803042).
作者简介：魏磊(1985-),男,硕士研究生.
作者单位：魏磊（四川大学,高分子科学与工程学院,四川,成都,610065）　
　　　　　陈弦（四川大学,化学学院,四川,成都,610064）　
　　　　　何波兵（四川大学,化学学院,四川,成都,610064）　

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收稿日期：2008年11月5日

修稿日期：2009年10月26日

出版日期：2010年1月15日