| 聚合物共混物脆韧转变性能研究 Ⅱ准韧性聚合物共混物脆韧转变的几何模型 |
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| 引用本文： | 刘浙辉,朱晓光,张学东,漆宗能,蔡忠龙,王佛松.聚合物共混物脆韧转变性能研究 Ⅱ准韧性聚合物共混物脆韧转变的几何模型[J].高分子学报,1998(1). |
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| 作者姓名： | 刘浙辉 朱晓光 张学东 漆宗能 蔡忠龙 王佛松 |
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| 作者单位： | 中国科学院化学研究所，香港理工大学应用物理系，中国科学院 |
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| 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．
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| 关 键 词： | 聚合物共混物，基体层厚度，分散相粒径分散度 |
STUDY OF THE BRITTLE DUCTILE TRANSITION OF POLYMER BLENDS Ⅱ.A GEOMETRIC MODEL |
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| LIU Zhehui,ZHU Xiaoguang,ZHANG Xuedong,QI Zongneng.STUDY OF THE BRITTLE DUCTILE TRANSITION OF POLYMER BLENDS Ⅱ.A GEOMETRIC MODEL[J].Acta Polymerica Sinica,1998(1). |
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| Authors: | LIU Zhehui ZHU Xiaoguang ZHANG Xuedong QI Zongneng |
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| Abstract: | A new equation for correlating morphological parameters,particle size ( d ),particle size distribution ( σ ),particle volume fraction ( ) 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 reducing .The effect of σ is found to be influenced by .The higher the ,the more significant the effect of σ on T .The new equation is applied to the poly(vinyl chloride)/nitrile rubber,polypropylene (PP)/EPDM,and PP/EVA blends.The theoretical predictions agree well with the experimental results. |
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| Keywords: | Polymer blends Matrix ligament thickness Particle size distribution |
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