Stampable laminates of glass fiber reinforced poly(ethylene terephthalate).

摘要

Thermoforming and high temperature molding from melting of the stampable, glass fiber reinforced polyethylene terephthalate of the present invention produces parts having good strength properties. The laminate has chemically treated glass fibers and polyethylene terephthalate which is either amorphous, semi-amorphous or crystalline. The chemically treated glass fibers are in the form of chopped strands, continuous strands and mats of chopped and/or continuous strands which can also be mechanically or chemically bonded. The chemical treatment on the glass fiber results from drying the glass fibers treated with an aqueous chemical treating composition. The aqueous chemical treating composition has a film forming polymer which is an epoxy polymer and/or bisphenol A polyester film forming polymer having a decomposition temperature of at least 370 DEG C in an effective film forming amount, and epoxy-containing organo functional coupling agent or a mixture of such a coupling agent with an amino-containing organo functional coupling agent in an effective coupling agent amount and a cationic lubricant in an effective lubricating amount and a carrier such as water to allow treatment of the glass fibers.