Composite polypropylene material suitable for surface spray coating

The invention relates to a composite polypropylene material suitable for surface spray coating, which is used to solve the problem that the composite polypropylene material has no adhesion to varnish film coating. The composite polypropylene material suitable for surface spray coating is prepared from the following raw materials in parts by weight: 60-85 parts of polypropylene, 2-10 parts of ethylene/vinyl acetate copolymer, 10-30 parts of filler, 1-3 parts of a silane coupling agent, 0.2-0.5 parts of an antioxidant, 0.2-0.5 parts of light stabilizer, and 0.1-0.2 parts of an antifoaming agent. According to the composite polypropylene material provided by the invention, polypropylene is used as the base material, the ethylene/vinyl acetate copolymer, the filler, the silane coupling agent and other materials are proportionally added, so that the adhesion between the material and the varnish film coating is greatly enhanced and the low temperature resistance and shock resistance of the material are improved at t