STUDY ON THE INFLUENCE OF INJECTION PARAMETERS ON RESIN FLOW IN RTM POROUS INJECTION MOLDING

Abstract

Abstract: In order to improve the efficiency of resin transfer molding, porous injection molding is often used. In the process of porous injection molding, the location of injection and outlet, injection pressure and other process parameters will affect the flow of resin, and then affect the quality of final parts. At present, the porous injection molding is often used for large and complex structural parts, so it is necessary to obtain the influence of injection parameters on the resin flow. In this paper, based on the numerical simulation by Fluent software, the influence of the number of injections, the distance between adjacent injections and the injection pressure on the resin flow were analyzed by using the control variable method, and the relationship among the three parameters and the length of weld lines and filling time was obtained. The simulation results show that the filling time is inversely proportional to the number of injection ports, the distance between adjacent injection ports and the injection pressure, and the length of weld line is proportional to the number of injection ports and the distance between injections, and not related to injection pressure.

Key words: RTM, porous injection, resin flow, numerical simulation

CLC Number:

TB332

XIANG Lin-tong, ZHAO An-an, YU Fei, LU Shi-hong. STUDY ON THE INFLUENCE OF INJECTION PARAMETERS ON RESIN FLOW IN RTM POROUS INJECTION MOLDING[J]. Fiber Reinforced Plastics/Composites, 2019, 0(12): 47-53.

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