泡沫夹层结构VARI工艺中树脂流动行为的研究  

STUDY OF RESIN FLOW BEHAVIOR IN VARI MOLDING PROCESS OF FOAM SANDWICH COMPOSITE MATERIALS

作　　者：赵晨辉[1] 张广成[1] 李莎莎[1] 

机构地区：[1]西北工业大学理学院,西安710072

出　　处：《工程塑料应用》2011年第9期38-41,共4页Engineering Plastics Application

摘　　要：采用可视化实验方法研究了泡沫夹层结构真空辅助成型工艺(VARI)中树脂的流动行为。结果表明,导流介质的存在可以明显提高树脂的流动速率;剥离布可使得复合材料泡沫样板表面光滑平整,并可明显提高充模速率,减少充模时间;增加浇注口数目可明显缩短充模时间,并可获得浸渍均匀、沟槽全满的样板。采用真空点源布局B时的树脂流动速率大于真空点源布局A,但布局B的充模过程易产生白斑,其所需的浇注时间要比布局A稍长。The resin flow behavior in vacuum assisted resin infusion molding process （VARI）of foam sandwich materials was studied through visualization flow experiments. The results showed that diversion nets could improve the flow rate of the resin. Stripping cloth could make the surface of composite foam board to become smooth and improved the flow rate of the resin, shortened the filling time. fncreasing the amount of injection port could significantly shorten the filling time and obtain a board with uniform soaking and full-filling plow groove. The flow rate of the resin with adopting layout B of vacuum point source was higher than layout A, but the filling process of layout B brought white spot easily, so the pouring time of layout B was slight longer than layout A on the contrary.

关 键 词：真空辅助成型 泡沫夹层结构 泡沫沟槽 树脂流动行为 

分 类 号：TQ32[化学工程—合成树脂塑料工业]