EFFECT OF PROCESSING METHOD ON THE IMPACT STRENGTH OF POM/TPU/CaCO3 TERNARY COMPOSITES

Xiao-ling Gao; Cheng Qu; Qin Zhang; Rong-ni Du; Qiang Fu

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EFFECT OF PROCESSING METHOD ON THE IMPACT STRENGTH OF POM/TPU/CaCO3 TERNARY COMPOSITES

Papers | Updated：2021-06-21

- EFFECT OF PROCESSING METHOD ON THE IMPACT STRENGTH OF POM/TPU/CaCO3 TERNARY COMPOSITES
- Vol. 23, Issue 5, Pages: 531-537(2005)
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- Published：20 September 2005
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Xiao-ling Gao, Cheng Qu, Qin Zhang, et al. EFFECT OF PROCESSING METHOD ON THE IMPACT STRENGTH OF POM/TPU/CaCO3 TERNARY COMPOSITES[J]. 2005, 23(5): 531-537.
DOI：

Xiao-ling Gao, Cheng Qu, Qin Zhang, et al. EFFECT OF PROCESSING METHOD ON THE IMPACT STRENGTH OF POM/TPU/CaCO3 TERNARY COMPOSITES[J]. 2005, 23(5): 531-537. DOI：

摘要

Polyoxymethylene (POM)/elastomer/filler ternary composites were prepared

in which thermoplastic polyurethane (TPU) and inorganic filler

namely

CaCO3

were used to achieve balanced mechanical properties of POM. The dispersion and phase morphology of POM/elastomer/filler composites were found to depend largely on processing method

CaCO3 content in masterbatch and the filler size. Two processing methods were employed to prepare POM/elastomer/filler ternary composites. One is called the one-step method

in which elastomer and the filler directly melt blended with POM matrix. The other is called the two-step method

in which the elastomer and the filler were mixed to get masterbatch first

which was then melt blended with pure POM of different content. The effect of phase morphology and processing method on impact strength was investigated. It was found that the two-step method results in an increase in impact strength but not for the one-step method. Additionally

the impact strength of POM ternary composites decreases with the increase in the size of CaCO3 particles.

Abstract

Polyoxymethylene (POM)/elastomer/filler ternary composites were prepared

in which thermoplastic polyurethane (TPU) and inorganic filler

namely

CaCO3

were used to achieve balanced mechanical properties of POM. The dispersion and phase morphology of POM/elastomer/filler composites were found to depend largely on processing method

CaCO3 content in masterbatch and the filler size. Two processing methods were employed to prepare POM/elastomer/filler ternary composites. One is called the one-step method

in which elastomer and the filler directly melt blended with POM matrix. The other is called the two-step method

in which the elastomer and the filler were mixed to get masterbatch first

the impact strength of POM ternary composites decreases with the increase in the size of CaCO3 particles.

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