作　　者： ; ;

机构地区： 江汉大学化学与环境工程学院

出　　处： 《化工新型材料》 2009年第9期73-75,共3页

摘　　要： 采用有限元方法(Finite Element Method)对环氧树脂/聚氨酯(EP/PU)梯度材料在制备过程中产生的残余热应力进行了分析。详细讨论了梯度层数目对应力大小的影响。研究结果表明:当体系中EP和PU组成相同时,梯度材料缓和热应力的效果比双层材料显著。且梯度材料的热应力缓和效果随梯度层数增加而增加。 The finite element method was introduced to study thermal residual stresses developed during fabrication of epoxy/polyurethane （EP/PU） graded materials and bi-layer material. The effect of number of layers on thermal residual stress values and distributions were analyzed. Results showed that for the same composition （EP/PU= 10/10, w/w）, the thermal residue stress in EP/PU graded material was lower than that in EP/PU bi-layered material, and increased with number of the layers.

关 键 词： 聚合物 梯度材料 残余热应力 有限元法

领　　域： [化学工程] [化学工程] [理学] [理学]