Correlation Between Solidification Behavior and Melt Crystallization Kinetics of Isotactic Polypropylene (iPP) during Injection Molding

被引：18

作者：

Yang, Bin ^{[1
,2
]}

Lin, Ji-Zhi ^{[1
]}

Xia, Ru ^{[1
,2
]}

Su, Li-Feng ^{[1
,2
]}

Miao, Ji-Bin ^{[1
,2
]}

Qian, Jia-Sheng ^{[1
,2
]}

Chen, Peng ^{[1
,2
]}

Liu, Jing-Wang ^{[1
,2
]}

Deng, Shuang-Quan ^{[3
]}

机构：

[1] Anhui Univ, Coll Chem & Chem Engn, Anhui Prov Lab High Performance Rubber & Prod, Hefei 230601, Peoples R China

[2] Anhui Univ, Coll Chem & Chem Engn, Key Lab Environm Friendly Polymer Mat Anhui Prov, Hefei 230601, Peoples R China

[3] Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610064, Sichuan, Peoples R China

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS | 2014年 / 53卷 / 03期

基金：

中国国家自然科学基金;

关键词：

solidification; thermal gradient; crystallization; kinetics; enthalpy transformation; HIGH-DENSITY POLYETHYLENE; NUMERICAL-SOLUTION; HEAT-CONDUCTION; STEFAN PROBLEM; COOLING STAGE; PREDICTION;

D O I：

10.1080/00222348.2013.845060

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The relationship between solidification behavior and crystallization kinetics, during the injection molding process of isotactic polypropylene (iPP) was investigated. It was found that the crystallization rate was in proportion to the cooling rate. The existence of a turning point (TP) in the dimensionless temperature (theta) vs. ln t curve, which is potentially applicable for the estimation of cooling time, was experimentally verified for iPP. The present study is expected to be useful for the optimization of the processing conditions during injection molding of crystalline polymers, and also supplies a good insight into further study of the "processing-structure-property" relationship of polymeric materials.

引用

页码：462 / 473

页数：12

共 33 条

[1] Investigation of the melt-crystallization of polypropylene by a temperature slope method [J].