LCM工艺中边缘效应对充模流动的影响  

Influence of Edge Effects on the Molding Filling in Liquid Composites Molding

作　　者：田正刚[1] 王继辉[1] 张垣[1] 高国强[2] 祝颖丹[1] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070 [2]北京玻璃钢研究设计院,北京102101

出　　处：《武汉理工大学学报》2005年第4期16-18,22,共4页Journal of Wuhan University of Technology

基　　金：国家"86 3"项目 (2 0 0 1AA335 0 2 0 )

摘　　要：在复合材料液体模塑成型工艺中(LCM) ,预成型体和模具壁间存在的缝隙容易产生优先的树脂流道,即为常见的边缘效应。采用2种几何模型计算优先流道的等效渗透率张量,结合单向流动法研究不同缝隙宽度时树脂的流动行为,并进行充模过程仿真模拟,研究和预测边缘效应对充模流动的影响。实验发现较小的缝隙也会对边缘的流动产生干扰。In liquid composites molding (LCM) processes,a gap between the perform and the mold edge can create a preferential flow path for the resin, which is the so-called edge effect. The resin flow behaviors in different gaps were studied by the unidirectional flow method together with the equivalent permeability tensor of flow path computed by two geometric models. In addition, the filling process was simulated to predict the influences of edge effects on the flow pattern. It is found out that even small gaps would disturb the edge flow. The simulation shows good agreement with the experiments.

关 键 词：LCM 边缘效应 等效渗透率 

分 类 号：TB322[一般工业技术—材料科学与工程]