PE-MD厚壁燃气管道阀门缩孔研究  

Research of Shrinkage Cavity of PE-MD Thick Gas Pipe Valves

作　　者：梁业兴[1,2] 凌中水[1,2] 潘莹[1,2] 李春波[1,2] 黄虹宾[1,2] 

机构地区：[1]深圳大学机电与控制工程学院,广东深圳518060 [2]深圳大学深圳市模具先进制造技术重点实验室,广东深圳518060

出　　处：《工程塑料应用》2012年第7期27-31,共5页Engineering Plastics Application

基　　金：国家自然科学基金项目(60978039)

摘　　要：针对厚壁中密度聚乙烯燃气管道阀门内部缩孔问题,设计并制造了相应的模具,从模具结构、注塑工艺、制件脱模后热处理等方面提出了解决制件内部缩孔问题的方案。通过对各种工艺参数的优化研究,得出了各因素对内部缩孔问题的影响程度及最佳工艺参数。结果表明,合理的工艺条件及模具结构能够解决厚壁制件内部缩孔问题。A mold was designed and manufactured in order to solve the internal shrinkage of medium density polyethylene （ PE-MD ） thick gas pipe valves, the solutions of internal shrinkage was proposed from the structure of mold, injection process, heat treatment after demolding of plastic part and so on. The effect of each parameter on internal shrinkage and the optimal technological parameters were obtained by optimizing and researching different processing parameters.The experimental results showed that the problem of internal shrinkage of PE-MD could be solved through a reasonable process and mold structure.

关 键 词：中密度聚乙烯 收缩率 燃气管道阀门 缩孔 正交试验 单因素试验 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]