초록 ▼

Disclosed is glass fiber reinforced thermoplastic sheet material suitable for various compression molding applications. The glass fibers useful in this invention are described in detail, and the thermoplastic composition is poly(ethylene terephthalate), poly(cyclohexylene dimethylene terephthalate)

Disclosed is glass fiber reinforced thermoplastic sheet material suitable for various compression molding applications. The glass fibers useful in this invention are described in detail, and the thermoplastic composition is poly(ethylene terephthalate), poly(cyclohexylene dimethylene terephthalate) or a blend of either of these polyesters with each other and/or polycarbonate.

대표청구항 ▼

Glass fiber reinforced thermoplastic sheet material capable of being thermoformed into parts having improved heat resistance and a notched impact strength of 15 ft-lb in. or greater, said sheet material being constructed of at least one glass fiber mat having a density of about 1 to 5 oz/ft2 impregn

Glass fiber reinforced thermoplastic sheet material capable of being thermoformed into parts having improved heat resistance and a notched impact strength of 15 ft-lb in. or greater, said sheet material being constructed of at least one glass fiber mat having a density of about 1 to 5 oz/ft2 impregnated with a thermoplastic composition, said sheet material comprising (a) about 20 to 60 weight % fibers in the form of matted bundles containing about 200 to 300 strands, said strands having a length of about 2 to 10 inches, a diameter of about 14 microns to about 30 microns and having a coating of a glycidal silane or amino silane, and (b) about 80 to 40 weight % of a thermoplastic composition comprising poly(ethylene terephthalate) or poly(cyclohexylene dimethylene terephthalate) having an I.V. of about 0.4 to about 1.0, a degree of crystallinity of at least 20%.