Liquid Composite Molding Processes

Abstract

The Liquid Composite Molding Processes (LCM) processes are based on the impregnation of the dry fibers directly with low-viscous liquid resin matrix and curing simultaneously. The process features higher efficiency and flexibility compared to the prepreg technologies with lower cost so more attractive for complex structures in serial production. Nevertheless, the relatively higher shrinkage and brittleness of liquid epoxy resin systems is a critical challenge leading to residual stress and distortion of the structure and thus to reduced mechanical properties. Therefore modification of the resin matrix with NPs is especially attractive for LCM processes, allowing for a cost-efficient production of high-performance FRPs. In this chapter, the current state of research and development regarding the critical aspects in the production of high-performance functional FRPs with NP-modified resin systems is reviewed.