大型高性能复合材料构件RTM工艺进展

RTM Process for Large Scale and High Performance Composite Components

航空航天工业的飞速发展对大型、高性能先进树脂基复合材料构件的高效、低成本制造提出了迫切需求。树脂转移模塑成型(Resin transfer molding,RTM)是一种制造先进纤维增强体树脂基复合材料的工艺技术,与现有的热压罐技术相比具有设备结构简单、生产效率高及制造成本低等优点。本文综述了两种典型的RTM工艺:真空辅助树脂转移模塑成型(Vacuum assisted resin transfer molding,VA RTM)与轻质树脂转移模型成型(Light resin transfer molding,L RTM)的技术研究与应用现状,指出了这两种工艺在制造大型高性能构件时存在的问题,并对RTM工艺过程多场耦合数值仿真、仿真新方法及多功能仿真的研究现状及技术难点进行了总结,基于此对RTM工艺发展趋势进行了探讨,旨在为实现快速工艺优化,获得高效、高性能和大型构件的RTM工艺应用提供参考。

In recent years,the rapid development of aerospace industry has put forward an urgent demand for high efficiency and low cost manufacturing of large and high-performance advanced resin matrix composites.Resin transfer molding(RTM)is a technology for manufacturing advanced fiber reinforced resin matrix com posites.Compared with the existing hot-pressing technology,RTM has the advantages of simple equipment structure,high production efficiency and low manufacturing cost.In this paper,the research and application status of two typical RTM processes—Vacuum assisted-Resin transfer molding(VA-RTM)and Light-Resin transfer molding(L-RTM)are reviewed.The existing problems of these two processes in manufacturing large high performance components are pointed out.The research status and technical difficulties of multi-field coupled numerical simulation,new simulation methods and multi-function simulation of RTM process are summarized.Based on above conclusions,the development trend for RTM process is discussed,which is ben eficial to provide reference for realizing rapid process optimization and obtaining high efficiency,high perfor mance and large components in RTM process.