西华大学学报（自然科学版）2017，Vol.36Issue(4)：58-64,7.DOI:10.3969/j.issn.1673-159X.2017.04.009
纤维状β成核剂对聚丙烯非等温结晶动力学的影响
The Effect of Fibrous β Nucleating Agent on the Nonisothermal Crystallization Kinetics of Polypropylene
摘要
Abstract
Understanding the nonisothermal crystallization process of polypropylene (PP) under the presence of fibrous β nucleating agents,is essential to improve the mechanical performance of PP.In this paper,the self-assembling β nucleating agent named TMB-5 was controlled to form point and fiber like morphology,and the effect of fibrous TMB-5 on the nonisothermal crystallization kinetics of polypropylene was studied via comparative research method.The results illustrate that TMB-5 can not only impose PP forming β-form crystals,but also help nucleate PP molecules at high temperature and enhance its crystallization rate.Moreover,unlike the punctate pattern,when fibrous TMB-5 plays the role to control the formation of PP crystals upon cooling,α-form crystal prefers nucleating on the growing front of β-form crystal,which may in turn break the development of initial crystals.As a consequence,the crystallization process is relatively slow,and exhibits an atypical three-stage growth mode when TMB-5 self-assembles into fibrous pattern.关键词
聚丙烯/纤维状β成核剂/β晶/非等温结晶动力学Key words
polypropylene/fibrous β nucleating agent/β-form crystal/nonisothermal crystallization kinetics分类
化学化工引用本文复制引用
韩锐,胡斌,彭婷..纤维状β成核剂对聚丙烯非等温结晶动力学的影响[J].西华大学学报（自然科学版）,2017,36(4):58-64,7.基金项目
四川省教育厅科研项目(17ZB0412) （17ZB0412）
汽车高性能材料及成形技术四川省高校重点实验室开放课题项目(szjj2016-029). （szjj2016-029）
