西华大学学报（自然科学版）2017，Vol.36Issue(4)：65-69,5.DOI:10.3969/j.issn.1673-159X.2017.04.010
力场与温度场耦合作用对嵌段共聚物聚丙烯β晶形成的影响
The Coupling Effect of Force Field and Temperature on β-form Crystal of Polycrystalline Composition of Block Copolymer Polypropylene
摘要
Abstract
Polycrystalline regulation has crucial influence on improving mechanical properties of polypropylene.The β-form crystal composition changes in block co-polymer polypropylene (PP-B) affected by the coupling effect of force field and temperature field,in this article,was systematic studied via changing shear temperature and shear rate as well as the cooling rate after shearing.The results indicate that there are the optimal combination conditions of force field and temperature to promote β-form crystal formation in PP-B.At low melt temperature,increasing shear rate and cooling rate in an appropriate range can significantly improve the relative content of β-crystal,up to 63%;however,exorbitant shear rate and cooling rate help to restrain the growth of β-crystal.关键词
嵌段共聚聚丙烯/剪切速率/冷却速率/β晶/聚丙烯类聚合物/剪切力场和温度场的耦合/聚合物性能优化Key words
block copolymer polypropylene/shear rate/cooling rate/β-form crystal/polypropylene polymers/the coupling of the shear field and the temperature field/polymer performance optimization分类
化学化工引用本文复制引用
王中最,彭红梅,李光照..力场与温度场耦合作用对嵌段共聚物聚丙烯β晶形成的影响[J].西华大学学报（自然科学版）,2017,36(4):65-69,5.基金项目
西华大学重点科研基金资助(Z1520103). （Z1520103）
