Extrusion foaming behavior of PBT resins

Document Type

Article

Publication Date

3-1-2006

Abstract

An investigation of the foaming behavior of polybutylene terephthalate (PBT) resins in extrusion is performed. Commercial grades of PBT with different molecular weights and rheological characteristics are chosen. PBTs with a high temperature chemical blowing agent are extruded under different material and operational conditions (e.g., amount of blowing agent, set temperature at the die, screw RPM, etc.) to allow the understanding of the effects of those conditions on product characteristics. The foamed extrudates are analyzed for density, morphology, and crystallinity. It is shown that the foaming behavior and the foam quality of PBT are functions of the characteristic properties of the resins including rheological and crystallization behavior. © 2006 SAGE Publications.

Identifier

33646714825 (Scopus)

Publication Title

Journal of Cellular Plastics

External Full Text Location

https://doi.org/10.1177/0021955X06060952

e-ISSN

15307999

ISSN

0021955X

First Page

165

Last Page

176

Issue

2

Volume

42

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