Approach to the production of low-density, microcellular foams in extrusion

被引：0

作者：

Behravesh, AH ^{[1
]}

Park, CB ^{[1
]}

Venter, RD ^{[1
]}

机构：

[1] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada

来源：

CONFERENCE PROCEEDINGS AT ANTEC '98: PLASTICS ON MY MIND, VOLS I-3: VOL I; PROCESSING, VOL II; SPECIAL AREAS, VOL III; MATERIALS | 1998年 / 44卷

关键词：

microcellular plastics; cell coalescence; low density foam; melt fracture;

D O I：

暂无

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A continuous extrusion process for the manufacture of low-density microcellular polymers is outlined. Previous research on the continuous processing of microcellular polymers has centered around the control of microcell nucleation in extrusion. This paper presents an effective means for the control of cell growth to achieve a desired expansion ratio with CO2 as a blowing agent in the microcellular foam processing. In addition, a means to prevent the deterioration of the cell population density via cell coalescence during expansion is outlined. By tailoring the extrusion processing parameters, microcellular HIPS foams with a cell density of 10(10) cells/cm(3) and a controlled expansion ratio in the range of 1.5 to 23 times were successfully obtained.

引用

页码：1958 / 1967

页数：10

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