液态二氧化碳辅助注射管件壁厚的工艺影响  

Process Impact ofWall Thickness of Liquid Carbon Dioxide-Assisted Injection Molding Pipes

作　　者：金廷翁 匡唐清 柳和生 杨帆[3] 梁健康 彭杰 Tingweng Jin;Tangqing Kuang;Hesheng Liu;Fan Yang;Jiankang Liang;Jie Peng(School of Materials Science and Engineering,East China Jiaotong University,Nanchang 330013,China;School of Electromechanical and Vehicle Engineering,East China Jiaotong University,Nanchang 330013,China;Center for Basic and Engineering Practice,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学材料科学与工程学院,江西南昌330013 [2]华东交通大学机电与车辆工程学院,江西南昌330013 [3]华东交通大学基础实验与工程实践中心,江西南昌330013

出　　处：《高分子材料科学与工程》2025年第1期91-98,共8页Polymer Materials Science & Engineering

基　　金：江西省自然科学基金重点项目(20232ACB204004);国家自然科学基金资助项目(52273033);国家自然科学基金资助项目(52163006);江西省重点研发计划“揭榜挂帅”项目(20223BBE51012)。

摘　　要：基于实验手段考察了液态二氧化碳辅助注射成型(LCO_(2)-AIM)管件壁厚分布及其均匀性特点以及工艺参数影响。与气体辅助注射成型(GAIM)和水辅助注射成型(WAIM)管件对比发现,LCO_(2)-AIM管件壁厚沿流动方向呈先减小后增大的趋势,而GAIM和WAIM管件壁厚沿流动方向逐渐增大,LCO_(2)-AIM成型的管件壁厚比GAIM和WAIM成型的管件壁厚更薄、更均匀。通过单因素实验法发现,熔体温度、注射延迟时间、LCO_(2)注射压力、熔体注射压力和模具温度这5个工艺参数中,注射延迟时间对LCO_(2)-AIM管件壁厚的影响显著,管件壁厚随着注射延迟时间的增大而增大,熔体温度、LCO_(2)注射压力和模具温度对LCO_(2)-AIM管件壁厚影响较小;工艺参数对管件壁厚均匀性影响较小。The wall thickness distribution and its uniformity characteristics of liquid carbon dioxide-assisted injection molding(LCO_(2)-AIM)pipes and influence of process parameters were investigated based on experimental means.Comparison with gas injection assisted molding(GAIM)and water injection assisted molding(WAIM)pipes shows that the wall thickness of LCO_(2)-AIM pipes decreases and then increases along the flow direction,while the wall thickness of GAIM and WAIM pipes increases gradually along the flow direction,and that the wall thickness of LCO_(2)-AIM molded pipes is thinner and more homogeneous than that of GAIM and WAIM molded pipes.Through the one-way experimental method,it is found that among the five process parameters:melt temperature,injection delay time,LCO_(2) injection pressure,melt injection pressure and mold temperature,the injection delay time has a significant effect on the wall thickness of the LCO_(2)-AIM pipes,and the wall thickness of the pipes increases with the increase of the injection delay time,while the melt temperature,LCO_(2) injection pressure,and mold temperature have a smaller effect on the wall thickness of LCO_(2)-AIM pipes;the process parameters have a small effect on the wall thickness uniformity of pipes.

关 键 词：液态二氧化碳 流体辅助注射成型 壁厚 工艺参数 工艺方法 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]