Composite material for structural applications

摘要

Composite material that contain epoxy resin which is toughened and strengthened with thermoplastic materials and a blend of insoluble particles. The uncured matrix resins include an epoxy resin component, a soluble thermoplastic component, a curing agent and an insoluble particulate component composed of elastic particles and rigid particles. The uncured resin matrix is combined with a fibrous reinforcement and cured/molded to form composite materials that may be used for structural applications, such as primary structures in aircraft.

主权项

1. A method for making a prepreg for use in structural applications, said method comprising the steps of:
providing an uncured resin comprising:
an epoxy resin component;a soluble thermoplastic component;an insoluble particulate component comprising a blend of particles comprising rigid particles and elastic particles wherein the weight ratio of elastic particles to rigid particles ranges from 1:1.3 to 1:2.5; and;a curing agent; and combining said uncured resin with a fibrous reinforcement to provide said prepreg.