Photosensitive resin for 3D printing

Abstract

A photosensitive resin for 3D printing relates to the technical field of 3D printing, and comprises, by weight, 25-35 parts of a polyurethane prepolymer, 45-55 parts of an acrylate resin, 15-25 parts of a furan resin, 1-5 parts of a photoinitiator, and 1-5 parts of an auxiliary agent, the auxiliary agent comprises one or more of a nano filler, a nano color paste, a reactive diluent, an antifoaming agent, an antioxidant, and a dispersant, and the auxiliary agent comprises one or more of a nano filler, a nano color paste, a reactive diluent, an antifoaming agent, an antioxidant, and a dispersant. The modified titanium dioxide is prepared by the following steps: a, calcining anatase type titanium dioxide, drying, adding ethanol for soaking and dissolving, and heating and stirring to form a titanium dioxide solution; b, carrying out suction filtration on the solution, drying, adding ethanol again, and carrying out ultrasonic dispersion to form a solution; c, adding a modifier and a catalyst into the solution for reaction; and d, aging at 25-30 DEG C after the reaction, centrifuging, washing and drying to obtain the modified titanium dioxide. According to the preparation method, the strength, toughness, hydrophobicity, ultraviolet resistance and glossiness of the photosensitive resin are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a photosensitive resin for 3D printing. Background technique [0002] Light-curing 3D printing rapid prototyping (SLA) is a technology that uses photosensitive resin to generate polymerization reaction under the irradiation of ultraviolet light of a certain wavelength, thereby curing molding technology. In 3D printing, the performance of 3D printing UV-curable photosensitive resin directly affects printing. The performance of the finished product. Currently, the commonly used UV-curable photosensitive resins for 3D printing include photoinitiators, photosensitive preforms, photoreactive active monomers, and additives. The existing UV-curable photosensitive resins for 3D printing have low strength and low toughness. Poor, and the printed product will turn yellow in less than one month, resulting in poor quality of light-cured products, which cannot meet the existing production...

AI Technical Summary

Problems solved by technology

[0002] Light-curing 3D printing rapid prototyping (SLA) is a technology that uses photosensitive resin to generate polymerization reaction under the irradiation of ultraviolet light of a certain wavelength, thereby curing molding technology. In 3D printing, the performance of 3D printing UV-curable photosensitive resin directly affects printing. The performance of the finished product. Currently, the commonly used UV-curable photosensitive resins for 3D printing include photoinitiators, photosensitive preforms, photoreactive active monomers, and additives. The existing UV-curable photosensitive resins for 3D printing have low strength and low toughness. Poor, and the printed product will turn yellow in less than one month, resulting in poor quality of light-cured products, which cannot meet the existing production needs

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