Material used for 3D printing and preparation method thereof

The invention discloses a material used for 3D printing. The material used for 3D printing comprises 60-96.5% of an ethylene-vinyl acetate copolymer, 1-6% of emulsion polymerized butadiene styrene rubber, 1-6% of solution polymerized styrene butadiene rubber, and 2-6% of auxiliary modified materials, the auxiliary modified materials mainly comprise 5-22% of a cross-linking agent, 38-57% of a compounding agent, 8-17% of an anti-oxidant, 4-7% of a flexibilizer, 8-17% of an anti-hydrolysis agent, and 5-20% of a melt fusion reinforcing agent. In addition, the invention also relates to a preparation method of the material. The material used for 3D printing has wider printing hardness scope, can realize a plurality of hardness gradients, has the characteristics of high fluidity, high toughness,low shrinking percentage, and high printing precision, is suitable for fused deposition for 3D printing rapid molding, and can better satisfy a moulding processing technology of the material used for3D printing. 本发明公开了种用于3D打印