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Surrounding temperature effects on extruded polyethylene foam structure

✍ Scribed by S.-T. Lee; K. Lee

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
451 KB
Volume
19
Category
Article
ISSN
0730-6679

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✦ Synopsis

Foam extrusion experiments were performed to study the effects of surrounding temperature variation on cell structure and foam density. Linear low density polyethylene and low density polyethylene were used with an endothermic chemical blowing agent in a single screw extruder with a capillary die to form foam rod samples at different surrounding temperatures. Cell density, foam density, and cell morphology were investigated. Although surrounding temperature thermally affects the outer thin skin layer, the overall structure is obviously affected. Skin formation, foaming, and melt capability to sustain the cells are discussed in this article.

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