聚合物二元体系动态力学性能的估算

动态热机械分析是多相聚合物体系的一个重要研究手段.分析动态力学性能可以研究共混高聚物的相容性、复合材料的界面特性以及高分子运动机理等.本文综述了聚合物二元体系,即填充、纤维增强、共混体系动态力学性能的估算方法.在填充体系中,分别概述有无界面作用两种情况,当存在界面作用时,界面作用越强,模量越大,阻尼越小.对纤维增强体系,讨论了玻璃纤维有无取向的情况下模量和阻尼的估算.特别对于聚合物二元共混体系,分"海-岛"结构和双连续相两种情况,分别讨论了模量与阻尼的估算.

Estimation of Dynamic Mechanical Properties of Polymer Binary System

The dynamic mechanical analysis is an important method to investigate the polymer blend system.Usually,it can be used to describe the compatibility of blend system,the contact surface characteristics of compound material and the polymer movement theory and so on.In the present work,corresponding estimation theories of dynamic mechanical properties of polymer binary system,especially for the fibers reinforced and blend polymer system was discussed.Effect of interfacial interaction on modulus and damping of filled composite material was discussed: the stronger the interfacial interaction,the lager the modulus and damping are.For fiber-reinforced material,estimation of dynamic mechanical analysis was discussed under the condition of tropism and no tropism of fiber and especially,for the binary polymer blends,estimation of modulus and damping was summarized with the discrete particle model(which assumes one component as dispersed inclusions in the matrix of the other) and the poly-aggregate model(in which no matrix phase but a co-continuous structure of the two is postulated).