The invention discloses an SAN material, a preparation method thereof and a refrigerator vacuum sealing box, belonging to the technical field of polymer materials. The raw materials include: 80‑90 parts of styrene-acrylonitrile copolymer, 5‑15 parts of toughening agent and 1‑5 parts of compatibilizer. The toughening agent is a copolymer of 4-methyl-1-pentene and styrene, wherein the mass content of 4-methyl-1-pentene is 10%‑18%, and the copolymer structure is a triblock copolymer or graft copolymer. The material is applicable to refrigerator, freezer and other products requiring high transparency and high toughness, solving the bottleneck of conventional modified SAN resin that cannot balance toughness improvement and light transmittance retention. The prepared SAN material integrates high transparency and high toughness.

Area Code: CN

Application Number: CN202110118805.6