橡胶增韧环氧树脂的增韧力学模型综述  

A REVIEW OF TOUGHENING MECHANICS MODELS IN RUBBER TOUGHENED EPOXY RESINS

作　　者：孙振华[1] 罗辉阳[1] 赵世琦[2] 

机构地区：[1]清华大学工程力学系,北京100084 [2]清华大学,化学工程系北京100084

出　　处：《高分子材料科学与工程》2001年第2期1-4,共4页Polymer Materials Science & Engineering

摘　　要：对橡胶增韧环氧树脂的增韧机理模型进行了回顾。其主要增韧机理为局部剪切屈服、孔洞或空穴的塑性体积膨胀和橡胶颗粒桥联。在细观结构上采用典型轴对称单元的有限元分析来预测增韧环氧树脂的力学行为。断裂力学的 J积分模型可用于估算增韧程度 ,基于断裂韧性The model of toughening mechanisms of rubber toughened epoxy resins was reviewed. The main toughening mechanisms were verified as localized shear yielding, plastic growth of the viod or the hole and the rubber bridging mechanisms. The analysis of the finite element method using the axisymmetric model was employed to assess the mechanics behavior of the rubber toughening in mesostructure. The J integral model could evaluate the rubber toughening degree based on the fracture mechanics. The quantitative model based on the fracture toughness G IC had made some advances as well.

关 键 词：环氧树脂 橡胶增韧 增韧机理 模型 有限元分析 

分 类 号：TQ323.501[化学工程—合成树脂塑料工业]