Composite materials matrices impregnate and protect reinforcement fibers, transforming them from their initial form of textile fiber to rigid objects of defined shape. Into industry field matrices can be different depending on reinforcement fibers and project needs.
Usually they are thermoplastic materials (Nylon, PEEK, POM, PE) or thermosetting resins, like polyester, vinylester or epoxy resins. With carbon fiber, for example, is commonly used the epoxy resin because of his excellent mechanical properties. Thermosetting resins initially appears like very thick liquids that harden with temperature action.
Matrices can also be cementitios, glassy and ceramic.