【摘要】 为了了解夹芯注射的成型过程及内部结构、探悉其成型机理,研究者主要对芯层熔体前缘的冲破现象、芯壳层物料的分布情况以及夹芯注塑件的力学性能进行了研究。文献显示,物料的性能尤其是粘度、加工工艺参数如注射速度、模温、熔融温度等以及模具尺寸对夹芯注射的充模过程及其制品最终的性能影响最为突出。更多还原

【Abstract】 On the chance of understanding the melt flow behavior, the internal structure and the mechanism of sandwich injection molding, recent researches have been performed on factors affecting the breakthrough phenomenon of the core melt, the distribution of skin/core layer and the mechanical properties of sandwich molded parts. A great deal of investigations indicate that the material properties especially the viscosity, process parameters such as injection velocity, mold temperature, melt temperature etc. and mold geometry greatly influence the melt flow behavior during process and the ultimate uniformity and mechanical properties of the parts.更多还原