超临界流体微细发泡射出成型制程之聚丙烯材料机械性质研究Study.PDF

臨 流 料 Study on Mechanical Properties of PP Parts in Microcellular Injection Molding Process 林 Lin, Chaur-Kie Assistant Professor, 葉金 呂逸 Wang,Wei-Da; Tian, Chieh-Chih; Yeh, Chin-Chang and Liu, Yi-Jie Graduate student, 料 量說 料 良 度 度 力來 料 行理勞 不 料臨 流 N2 量不 料 行臨 流不 參數了度 度度 度度SCF量降 臨 流 Abstract This study aims to explore the impact strength and viscosity of various shaping parameters such as melt temperature, Supercritical Fluid content and short size. The testing materials are polypropylene which is as matrix and nitrogen which is as foam. Some conclusions are made after study. The increase of melt temperature will increase impact strength, but either increase of SCF wt% or injection speed will decrease impact strength. Keywords: SCF, Microcellular injection molding process, PP, mechanical properties. 157 度 臨度臨 力 臨 (supercritical region) 量 說 臨 流 (supercritical 料 fluid) 1 度 臨 流 流 理 度 力 度 來 降度 度 力降 力降度 類 易 度降 度