GLASS-FIBER-REINFORCED POLYPROPYLENE COMPOSITION, PREPARATION METHOD THEREFOR AND USE THEREOF

Disclosed are a glass-fiber-reinforced polypropylene composition, a preparation method therefor and the use thereof. The polypropylene composition comprises the following components in parts by weight: 70-80 parts of a polypropylene resin, 5-10 parts of a polyethylene resin, 3-10 parts of a compatilizer, 10-20 parts of chopped glass fibers, 0.5-2 parts of a blow molding stabilizer, 0.1-0.8 parts of a light stabilizer, and 0-5 parts of a toughening agent, wherein the blow molding stabilizer comprises a hyperbranched epoxy resin and nano calcium carbonate. In the present invention, by using the polypropylene resin and the polyethylene resin combined with the blow molding stabilizer, the prepared glass-fiber-reinforced polypropylene composition can have a good three-dimensional blow molding performance and also have a high rigidity and heat resistance, and can thus be effectively used as an automobile pedal material. Sont divulgués une composition de polypropylène renforcée par des fibres de verre, un procédé de