GPPS材料特性对注塑制品尺寸的影响分析  

Influence of Materials Properties on Dimensional Measurements of Injection-Molded Parts for GPPS

作　　者：李吉泉[1] 姜少飞[1] 李德群[2] 

机构地区：[1]浙江工业大学特种装备制造与先进加工技术教育部重点实验室,浙江杭州310014 [2]华中科技大学材料成形及模具技术国家重点实验室,湖北武汉430074

出　　处：《高分子材料科学与工程》2010年第12期160-163,共4页Polymer Materials Science & Engineering

基　　金：浙江省教育厅科研项目(Y200908117);浙江省高等学校优秀青年教师资助计划项目;淅江省优先主题重大工业项目(2008C01059-1)

摘　　要：通过注塑成型数值模拟和Plackett-Burman实验设计相结合,以翘曲度评价注塑制品的翘曲变形情况,分析聚苯乙烯材料的流变特性参数和PVT特性参数对注塑制品变形的影响情况来研究材料特性对注塑制品尺寸的影响。结果表明,同一厂家生产不同牌号的同种材料引起的变形情况差距很大,文中研究的GPPS玻璃化转变时零压下的比容是注塑制品尺寸最重要的影响因素,玻璃化转变温度也有较大的影响。This paper investigated the influence of material properties of general purposed polystyrene （GPPS） on dimensional measurements of injection-molded parts,through the influence investigation of rheology behavior and PVT property on injection-molded parts warpage by combination of numerical simulation and Plackett-Burman design of experiment （DOE）. The warpage degree was introduced to describe the warping of injection-molded parts. The results show that the specific volume under zero pressure at the glass-transition temperature is the most important influencing factor on dimensional measurements of injection-molded parts for GPPS,and the glass-transition temperature is also one of the very important factors.

关 键 词：注塑成型 材料特性 制品尺寸 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]