MOLD PRESSURIZATION AS A METHOD TO REDUCE WARPAGE IN ROTATIONAL MOLDING OF POLYETHYLENE

被引：18

作者：

CHEN, CH ^{[1
]}

WHITE, JL ^{[1
]}

OHTA, Y ^{[1
]}

机构：

[1] UNIV AKRON,INST POLYMER ENGN,CTR ROTAT MOLDING DEV,AKRON,OH 44325

来源：

POLYMER ENGINEERING AND SCIENCE | 1990年 / 30卷 / 23期

关键词：

D O I：

10.1002/pen.760302306

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Warpage and global shrinkage of rotationally molded polyethylene parts can be a serious problem with resins of higher densities with rapid quenches and high mold wall thicknesses. It is shown that relatively low pressurization of molds substantially reduces the warpage of molded polyethylene parts. Samples cut out of parts produced in pressurized molds have the same density distributions, Izod Impact, and uniaxial stress‐strain characteristics as parts fabricated in unpressurized molds. Copyright © 1990 Society of Plastics Engineers

引用

页码：1523 / 1528

页数：6