基于熔体压力的注塑制品性能研究  

Injection Molded Parts Quality Based on Melt Pressure

作　　者：殷小春 瞿金平 何光建 

机构地区：[1]华南理工大学聚合物新型成型装备国家工程研究中心,聚合物成型加工教育部重点实验室,广东广州510641

出　　处：《塑料》2009年第3期106-108,66,共4页Plastics

基　　金：国家自然科学基金面上项目(10472034);广东省博士启动基金(B02B6070330);华南理工大学自然科学基金资助项目(B02E5060290)

摘　　要：利用脉动压力诱导注射成型装置对金属粉末/聚合物体系及低密度聚乙烯(LDPE)进行实验研究。实验结果表明:脉动压力的引入提高了金属粉末/聚合物体系注塑制品的致密性,制品密度提高;随着活塞杆振动振幅/频率的增大,低密度聚乙烯注塑制品力学性能提高,注塑试样熔融峰变宽,熔点向高温方向移动。Using metal powder/polymer system and low-density polyethylene （LDPE） , experiments were performed on the pulsatile pressure induced injection molding machine. The results showed that with the introduction of vibration forces, the metal powder parts became more compact and the density of products became higher. The LDPE injection molded parts ＇ extension strength became higher. The melt peak became wider and the melt point moved to higher points with the increasing of piston rod vibration amplitude/frequency.

关 键 词：脉动压力诱导 注射成型 密度 力学性能 熔点 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]