Grafted hydrophobic modified polypropylene composite material and preparation method thereof

The invention discloses a grafted hydrophobic modified polypropylene composite material and a preparation method thereof.The preparation method comprises the following steps that polypropylene, a main antioxidant, an auxiliary antioxidant, a slipping agent, an initiator and a silane coupling agent are evenly mixed according to the weight ratio, the mixture is added into a double-screw extruder to be extruded, cooled, dried and diced, and a polypropylene material a is obtained; uniformly mixing polypropylene, a main antioxidant, an auxiliary antioxidant, a slipping agent, an initiator and a fluorinating agent according to a weight ratio, adding the mixture into a double-screw extruder, extruding, cooling, drying and pelletizing to obtain a polypropylene material b; uniformly mixing the polypropylene material a and the polypropylene material b, adding the mixture into a double-screw extruder, extruding, cooling, drying and pelletizing to obtain the grafted hydrophobic modified polypropylene composite material.