STUDY OF THE BRITTLE DUCTILE TRANSITION OF POLYMER BLENDS Ⅱ.A GEOMETRIC MODEL

LIU Zhehui; ZHU Xiaoguang; ZHANG Xuedong; QI Zongneng; CHOY C L; WANG Fosong

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STUDY OF THE BRITTLE DUCTILE TRANSITION OF POLYMER BLENDS Ⅱ.A GEOMETRIC MODEL

Research Article | 更新时间：2021-03-19

- STUDY OF THE BRITTLE DUCTILE TRANSITION OF POLYMER BLENDS Ⅱ.A GEOMETRIC MODEL
- Acta Polymerica Sinica Issue 1, Pages: 1-7(1998)
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- Published：20 February 1998，
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LIU Zhehui, ZHU Xiaoguang, ZHANG Xuedong, QI Zongneng, CHOY C L, WANG Fosong. STUDY OF THE BRITTLE DUCTILE TRANSITION OF POLYMER BLENDS Ⅱ.A GEOMETRIC MODEL. [J]. Acta Polymerica Sinica (1):1-7(1998)
DOI：

LIU Zhehui, ZHU Xiaoguang, ZHANG Xuedong, QI Zongneng, CHOY C L, WANG Fosong. STUDY OF THE BRITTLE DUCTILE TRANSITION OF POLYMER BLENDS Ⅱ.A GEOMETRIC MODEL. [J]. Acta Polymerica Sinica (1):1-7(1998) DOI：

摘要

给出了分散相粒间基体层厚度Ｔ与分散相粒径（ｄ）、粒径分散度（σ）和分散相体积分数（∮）的定量关系式．发现σ对Ｔ的影响与∮有关

不仅Ｔ随σ的增大而增大

而且∮越大

这种影响越显著．用计算机图像分析仪直接测定了聚氯乙烯／丁腈橡胶、聚丙烯（ＰＰ）／三元乙丙橡胶、ＰＰ／乙烯醋酸乙烯酯共聚物共混物的Ｔ

发现这三种共混物的Ｔ近似于对数正态分布．理论预示与实验结果很好符合．

Abstract

A new equation for correlating morphological parameters

particle size ( d )

particle size distribution ( σ )

particle volume fraction (φ) and matrix ligament thickness ( T ) is derived.The equation is generally applicable to binary polymer blends with the lg normal distribution of particle size and the morphology of well dispersed particles.The effect of σ on T is discussed.The new equation predicts that T increases with d and σ

and with reducingφ.The effect of σ is found to be influenced by φ.The higher theφ

the more significant the effect of σon T.The new equation is applied to the poly (vinyl chloride)/nitrile rubber

polypropylene(PP)/EPDM

and PP/EVA blends.The theoretical predicitions agree well with the experimental results.

关键词

聚合物共混物基体层厚度分散相粒径分散度

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