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．
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.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1998年第1期1-7,共7页
Acta Polymerica Sinica
基金
国家自然科学基金
关键词
聚合物共混物
基体层厚度
共混物
脆韧转变
Polymer blends,Matrix ligament thickness,Particle size distribution
