Spraying-free metallic PMMA (polymethyl methacrylate) modified material and preparation method thereof

The invention discloses a spraying-free metallic PMMA (polymethyl methacrylate) modified material and a preparation method thereof. The method comprises the steps that the PMMA is used as a matrix resin raw material, MBS (methyl methacrylate), MABS (methyl methacrylate /acrylonitrile/butadiene/styrene/copolymer) and ACR (acrylate copolymer with core-shell structure) are taken as toughening agents, MS (methyl methacrylate/styrene copolymer) is taken as a processing modifying additive, aluminum powder coated with metals and pearlescent pigments which enable materials to be metallic are added, a certain quantity of dispersing agents, a small quantity of antioxidant agents, a lubricating agent, pigments and the like are supplemented, after the materials are uniformly mixed in the proportion, the materials are milled by a parallel double-screw extrusion machine, and a spraying-free metallic PMMA modified material is formed. The material and PVC (polyvinyl chloride) are subjected to compound co-extrusion, so that the surface of the prepared product has an excellent metallic effect; and compared with traditional spraying products, the spraying-free metallic PMMA modified material has the advantages of low cost, environment friendliness, scratch resistance, recycle and the like, therefore, the spraying-free metallic PMMA modified material is particularly suitable for being processed into lateral trim workpieces of refrigerators.