进出口因素对稳压腔RTM充模工艺的影响  

Influence of Inlet and Outlet Factors on RTM Filling Process of Pressure Stabilizing Cavity

作　　者：康宁[1] 汤之乙 

机构地区：[1]北京航空航天大学交通科学与工程学院,北京100191

出　　处：《塑料工业》2015年第7期43-47,共5页China Plastics Industry

摘　　要：对赛车进气稳压腔上壳体的树脂模塑成型工艺(RTM)充模过程进行数值模拟,研究进出口因素对充模时间及充模过程树脂损失的影响,并通过与实验结果的对比验证了渗透率和RTM充模过程计算方法的可靠性。计算结果表明,单进口中,工况5充模时间最短,树脂损失较少,工况5为最优进口位置;较大的进口有利于充模时间缩短,但树脂损失变化不大;多进口方式会缩短充模时间,减少树脂损失;随着出口增大,充模时间延长,树脂损失增加;充模时间随进口压力的增加而减小。进口压力较小时,增加进口压力可以明显缩短充模时间。进口压力较大时,充模时间缩短较小。不同进口压力对树脂损失影响不大。The filling process of resin transfer moulding （RTM） for the upper shell of intake pressure stabilizing cavity model was simulated numerically. The influence of inlet and outlet factors on filling time and resin loss during filling process was investigated. Experimental results were applied to verify the reliability of the calculation method of permeability and RTM filling process. The results showed that in the cases of single inlet, case 5 was the optimal one with the smallest filling time and the least resin loss. Bigger inlet was better to reduce the filling time, but no obvious change in the resin loss. Multi-inlets could reduce the filling time and the resin loss. Larger outlets resulted in longer filling time and more resin loss. The filling time reduced as the inlet pressure rised. When the inlet pressure was lower, the increase of inlet pressure could obviously shorten the filling time. When the inlet pressure was higher, the filling time was shortened less. Different inlet pressure had little impact on the resin loss.

关 键 词：纤维复合材料 树脂模塑成型工艺 充模时间 树脂损失 流动前锋 气泡 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]