Marble-like-effect resin master batch, and preparation method and application thereof

The invention discloses a marble-like-effect resin master batch. The marble-like-effect resin master batch is prepared by mixing a master batch A and a master batch B. The master batch A comprises the following components in parts by weight: 44-94.5 parts of matrix resin, 0-40 parts of impact modifier, 0.5-2 parts of light stabilizer, 0.5-2 parts of ultraviolet absorbent, 0.5-2 parts of antioxidant, 0.3-1 part of coupling agent, 0.2-1 part of lubricant and 3.5-8 parts of pigment. The master batch B comprises the following components in parts by weight: 70-90 parts of matrix resin, 5-15 parts of compatilizer, 0.5-2 parts of light stabilizer, 0.5-2 parts of ultraviolet absorbent, 0.5-2 parts of antioxidant, 0.1-1 part of chain extender and 3.4-8 parts of pigment. The marble-like-effect resin master batch can be coextruded with the PVC (polyvinyl chloride) resin to form the marble-like-effect PVC plastic, and has the advantages of realistic marble-like effect and excellent weather resistance. 本发明公开了种仿大理石效果的树脂母料，