橡胶增韧环氧树脂的增韧力学模型Ⅰ.有限元分析  

MODEL OF THE TOUGHENING MECHANICS OF THE RUBBER-TOUGHENED EPOXY RESINS Ⅰ. FINITE ELEMENT ANALYSIS

作　　者：罗辉阳[1] 孙振华[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4期16-18,22,共4页Polymer Materials Science & Engineering

摘　　要：使用包含一个橡胶和空穴的轴对称模型的有限元计算来分析橡胶增韧环氧树脂细观上的力学行为。包含橡胶颗粒模型的 Von Mises等效应力分布与包含空穴模型的相似 ,且在赤道以上 4 5°范围内界面处环氧一侧有相当大的应力梯度 ,橡胶在此脱落。橡胶颗粒内的应力分布均可忽略不计。The finite element method was employed to study the micromechanics in rubber toughened epoxy resins using the axisymmetric model contained a rubber and a hole. The distribution of the Von Mises equivalent stress of a rubber contained model was similar to that of a hole contained model. It showed that very high stress grade in the 45° field above the equator in the epoxy matrix interface. The rubber debonded from the epoxy matrix in the field and the stress in the rubber can ignore. Therefor the toughening mechanics model was simplified with the hole replacing the rubber in the epoxy matrix.

关 键 词：环氧树脂 橡胶增韧 有限元 增韧机理 力学模型 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]