气辅成型制品的气道设计  

Gas-Channel Design of Gas-Assisted Molded Parts

作　　者：柳承德[1] 梁继才[1] 李义[1] 管东波[1] 程小峰[1] 

机构地区：[1]吉林大学材料科学与工程学院,吉林长春130025

出　　处：《高分子材料科学与工程》2008年第8期135-138,共4页Polymer Materials Science & Engineering

基　　金："十五"国家重大科技攻关项目(2004BA907A19-2)

摘　　要：以气辅成型制品结构设计为研究对象,采用数值模拟和物理模拟的研究方法,分别对矩形和半圆形气道的气辅成型制品进行了设计研究,达到了减小气指缺陷程度的设计目的。在数值模拟实验中,采用Catia软件进行三维实体造型,采用Moldflow软件进行数值模拟流动分析;在物理模拟实验中,设计了160 mm×140 mm2的平板件,选取不同尺寸的十字交叉型气道,研究气道形状对气指缺陷的影响。结果表明,半圆形气道气辅成型制品的气道半径与制件板厚的比值存在一个最佳值范围;正方形气道的气指程度最大。The structure design of parts in gas assisted injection molding（GAIM） was researched, while the parts with rectangular and semi-circular gas channels were studied by the methods of numerical simulation and physical simulation. At last, the degree of gas fingering was reduced. In numerical simulating experiment, CATIA was used to design simulated parts, and Moldflow was used to simulate the flow of plastic in the mold of GAIM. In physical simulating experiment, the dimension of gas-assisted injected plate was 160 mm～140 mm. Gas channels were deeussated in the plate. Gas channels with different dimensions were designed to obtain the effects of gas channels on gas fingering. The results show that in the design of semi-circular gas channel there is optimized proportion range of radius to plate thickness and the gas fingering of parts with square gas channels is serious.

关 键 词：气体辅助注射成型 气道设计 数值模拟 物理模拟 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]