Annealing Induced Mechanical Reinforcement of Injection Molded iPP Parts

被引：36

作者：

Pan, Yamin ^{[1
,2
]}

Liu, Xianhu ^{[2
]}

Shi, Suyu ^{[3
]}

Liu, Chuntai ^{[1
]}

Dai, Kun ^{[1
]}

Yin, Rui ^{[4
]}

Schubert, Dirk W. ^{[2
]}

Zheng, Guoqiang ^{[1
]}

Shen, Changyu ^{[1
]}

机构：

[1] Zhengzhou Univ, Minist Educ, Key Lab Mat Proc & Mold, Coll Mat Sci & Engn, Zhengzhou 450002, Peoples R China

[2] Friedrich Alexander Univ Erlangen Nuremberg, Inst Polymer Mat, Martensstr 7, D-91058 Erlangen, Germany

[3] Henan Univ Engn, Sch Mat & Chem Engn, Zhengzhou 451191, Peoples R China

[4] China Astronauts Res & Training Ctr, Beijing 100089, Peoples R China

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2016年 / 301卷 / 12期

基金：

美国国家科学基金会;

关键词：

ISOTACTIC POLYPROPYLENE;

D O I：

10.1002/mame.201600305

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanical properties and microstructure of injection molded isotactic polypropylene parts with high orientation before and after annealing are analyzed. The mechanical properties of the annealed samples are improved effectively. Through thorough analysis of various structural characterizations, a microstructural model based on the fact that the total length of long period kept constant to analyze the variation of mechanical properties is proposed. It is suggested that the increase of overall crystallinity, the recombination of crystalline phase, and the increase of amorphous phase, respectively, are beneficial for the improvements of the strength, stiffness, and toughness of annealed samples.

引用

页码：1468 / 1472

页数：5

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