HIGH-PERFORMANCE GLASS-FIBER-REINFORCED THERMOPLASTIC COMPOSITES MADEOF TEXTILE PREPREGS

High-performance composites were made of knitted fabrics using weft in sertion. The stitch was formed by means of thermoplastic yarns (PA6 or PETP); the weft yarns were E- or SZ-glass yarns. These fabrics were v ery flexible and well-suited to produce doubly curved components. Then eight layers of these fabrics were pressed. At that point, the glass yam reinforcement was arranged unidirectionally. At a proportion of 46 volume-% of E- or S2-glass-with PETP as the matrix-ILS-values from 60 -70 MPa could be achieved. The corresponding values of breaking streng th were about 900 MPa. They could be achieved by means of M-glass yam as the reinforcement component.