Effect of Increased Weight Reduction on Shrinkage of Injection-Molded Parts Using Microcellular Foaming Process

被引：6

作者：

Zafar, Rizwan ^{[1
]}

Lee, Kyung Soo ^{[1
]}

Kim, Hak Bin ^{[1
]}

Jeon, Byung Joo ^{[1
]}

Cha, Sung Woon ^{[1
]}

机构：

[1] Yonsei Univ, Dept Mech Engn, Grad Sch, Seoul 120749, South Korea

来源：

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2008年 / 47卷 / 11期

关键词：

Glass fiber; Injection molding; Microcellular foaming process; Polymer; Shrinkage;

D O I：

10.1080/03602550802392019

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Shrinkage is a common problem in injection-molded parts. This study finds a way to reduce the linear and volumetric shrinkage by using microcellular foaming process. Experiments were conducted by using unfilled and filled (25% short glass fiber reinforced) acetal copolymer samples to demonstrate the effect. The overall improvement in shrinkage was observed therefore the result of increasing weight reduction in the samples. Therefore weight reduction can be utilized to achieve higher-dimensional tolerances of polymer parts and filled polymer can be used if greater mechanical properties are also a matter of concern.

引用

页码：1187 / 1192

页数：6

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