Low-warpage, scratch-resistant and soft-touch modified polypropylene composite material and preparation method thereof

The invention discloses a low-warpage, scratch-resistant and soft-touch modified polypropylene composite material and a preparation method thereof. The modified polypropylene composite material is prepared from the following raw materials in percentage by weight. The scratch-resistant polypropylene composite material is prepared from the following components in parts by weight: 30 to 60 parts of polypropylene resin, 20 to 30 parts of chopped glass fiber, 15 to 30 parts of POE (Polyolefin Elastomer), 5 to 15 parts of nano calcium carbonate, 1 to 5 parts of compatilizer, 0.1 to 5 parts of antioxidant and 0.5 to 2 parts of scratch-resistant additive. The preparation method is simple to operate, the polypropylene, the chopped glass fiber, the nano calcium carbonate, the compatilizer, the antioxidant and the scratch-resistant additive are proportioned according to a proper proportion, and then a finished product is obtained by adopting a twin-screw extruder to extrude and pelletize. According to the soft-touch mod