作　　者： ; ;

机构地区： 浙江师范大学工学院

出　　处： 《塑料》 2012年第5期60-62,共3页

摘　　要： 首先从微注塑研究现状出发提出流变性能研究的重要性,并讨论微注塑过程的特殊流场;接着以3种常用聚合物材料为例,研究它们在微注塑相当条件下的拉伸与剪切黏度;然后对不同材料以及同一材料不同条件下熔体的拉伸与剪切黏度进行综合比较分析;最后结合微注塑实验中使用不同材料时微结构复制性能产生明显差异的结果,说明熔体流变性能对微注塑过程影响的重要性。 Based on the current research situation for micro injection molding,the importance of the rheological properties was addressed and the special flow field in micro injection molding was discussed. Then with three widely used polymer materials,the elongational and shear viscosities of the melt under condition equivalent to micro injection molding were investigated. In addition,the elongational and shear viscosities of different materials as well as that of the same material with different conditions were analysed. At last,with the replication quality results of different materials in micro injection moulding experiment, the importance of the melt＇ s rheological properties was demonstrated.

关 键 词： 微注塑 拉伸黏度 剪切黏度 流变性能 变形速率

领　　域： [化学工程]