Fiber-reinforced thermoplastic molding compositions
AssigneeThe B. F. Goodrich Company
InventorsJames M. Sperk, Jr., Biing-lin Lee, James W. Summers, Edward M. Faber, deceased
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Abstract
Thermoplastic molding compositions and articles comprise immiscible thermoplastic polymer components and reinforcing fibers. The immiscible thermoplastic polymer components and the fibers are blended together under high shear conditions. The molding composition generally contains at least two phases and has an extremely smooth and fiber-free surface. Generally, very good physical properties are obtained such as high impact resistance, high heat distortion temperatures, high tensile modulus, high flex modulus, and the like. A desired blend of thermoplastic components is thermoplastic polyurethane and polyethyleneterephthalate with glass fibers.
Claims20
A thermoplastic molded article, comprising:
- a fiber-reinforced, two-phase, thermoplastic article, said article containing a thermoplastic polyurethane component and an immiscible thermoplastic polymer component which is PET, PETG, polycarbonate, polyacetal, or an ABS copolymer,
- said article having a surface layer rich in said thermoplastic polyurethane component and substantially free of said fibers, and a two-phase interior portion containing said thermoplastic polyurethane component, said immiscible thermoplastic polymer component, and said fibers.
A thermoplastic molded article, comprising:
- a fiber-reinforced, multi-phase thermoplastic article, said article containing a thermoplastic polymer and an immiscible thermoplastic polymer component,
- said article having a smooth surface layer essentially free of said fibers and rich in one of said immiscible thermoplastic polymer components, and at least a two-phase interior portion containing said thermoplastic polymer, said an immiscible thermoplastic polymer component, and said fibers, said thermoplastic polymer component and said an immiscible thermoplastic polymer component being selected from thermoplastic polyurethane PET, PETG, polyacetal, polycarbonate, ABS copolymers, PVC, copolymers of polyester-ether, SAN copolymers, polyacrylate, poly(phenylene oxide, polysulfone, polybutylene, polyethylene, polypropylene, or polystyrene.
Dependencies are inferred from the claim text.