Studies on POM/EVA Blends

Abstract

Abstract: The mechanical behavior and micro-structure of polyoxymethylene(POM)/poly (ethylene-co-vinyl acetate)(EVA)blends are investigated using scanning electron microscope(SEM)and DSC with various affecting factors such as the ratio of POM/EVA, molecualr weight and content of graft copolymer in blends.The result indicates that the fracture mechanism of POM/EVA blends can be changed from brittle to ductile by addition of POM-graft-DBM (dibutyl maleate) as a compatibilizer which can increase the adhesive strength of two phases and so the impact strength of the blend. The crystallinity and thermal propertyof the blend are also studied.Atoughened POM blend has been obtained according to the change of the notched Charpy impact strength with the composition of the blends.

Key words: POM,EVA, Blend, Compatibilizer, Toughening

TrendMD:

HE Jun-Po, HUANG Xiu-Yun, HU Qi-Zhong, YANG Si-Yuan. Studies on POM/EVA Blends[J]. Chem. J. Chinese Universities, 1995, 16(9): 1480.

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Studies on POM/EVA Blends

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