微细发泡注塑成型成核工艺与微孔形态的关系

Relationship Between Nucleation Process of Microcellular Foam Injection Molding and Cell Morphology

以微孔形态为研究对象,利用田口实验设计方法安排相关数值模拟实验,通过对实验数据的信噪比和方差分析,研究了饱和压力、熔体温度、气体浓度及其三者之间的交互作用对微孔形态的影响。结果显示,影响微孔形态的因素从大到小依次为:饱和压力、气体浓度尺寸和熔体温度;同时研究表明,饱和压力和气体浓度之间的交互作用也是影响微孔形态的重要因素之一。最后基于最优工艺方案组合,达到了改善微孔形态,提升产品质量的目的。

The cell morphology was studied by numberie simulation experiment technology and Taguchi experimental method. And the analysis of S/N ratio and ANOVA methods were used to investigate the effect and the significance of process parameters, including saturation pressure, melt temperature, gas concentration and the interaction among them on the cell morphology. The results show that the effect significance of process parameters on cell morphology is saturation pressure, gas concentration and melt temperature. At the same time, the research results also show that the interaction between saturation pressure and gas concentration is one of important factors to affect the cell morphology. Based on the analysis results, the optimized process parameters combination is obtained to improve the cell size distribution and product quality.