Manufacturing Thermoplastic Matrix Composites

摘要

A model is presented of the steps involved in the manufacturing process of semicrystalline thermoplastic matrix composites. The model relates the temperature and pressure applied during processing to a) the flow of the matrix into the fiber tow, b) the formation of contact and bond between adjacent plies, and c) the crystallinity. The results of the model were verified by tests performed with PEEK 150P polymer and APC-2 graphite/PEEK composite. In addition the mechanical properties of PEEK 150P polymer and APC 2 graphite/PEEK composite were measured at different crystallinites, from 0 to 40 weight percent. For PEEK 150P the tensile, compressive, and shear properties and the fracture toughness were measured. For APC-2 the Mode I and Mode II fracture toughnesses and fracture energies as well as the mixed mode stress intensity factors were determined. Keywords: Composite materials, Thermoplastics. (JES)