Light-cured three dimensional printing material and preparation method thereof

Abstract

The invention discloses a light-cured three dimensional printing material and a preparation method thereof. The light-cured three dimensional printing material comprises, by mass, 40-45 parts of polyester modified epoxy acrylate, 8-12 parts of cycloaliphatic epoxy resin, 8-10 parts of trihydroxymethylpropyl trimethylacrylate, 16-20 parts of 1,6-hexanediol diacrylate, 2-8 parts of triethyleneglycol divinyl ether, 1.5-2 parts of isopropylthioxanthone, 1.5-2 parts of 2-phenyl-2,2-dimethylamino-1-(4-morpholinylphenyl)-1-butanone, 1.5-2 parts of a reactive tertiary amine co-initiator, 0.5-2.7 parts of 4-isobutylphenyl-4'-methylphenyliodonium hexafluorophosphate, 0.5-2 parts of an anthraquinone derivative, 0.5-2 parts of a promoter and 4-8 parts of a flexibilizer. Shaped parts made by using the light-cured three dimensional printing material have the advantages of low shrinkage, high toughness and high shaping precision.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, in particular to a light-cured three-dimensional printing material and a preparation method thereof. Background technique [0002] Stereo-curing 3D printing is also called incremental manufacturing or additive manufacturing. It is a process in which printing materials are sprayed onto the work surface according to the principle of droplet jetting, and then cured with ultraviolet light and accumulated layer by layer. 3D printing rapid prototyping technology has advantages that cannot be compared with traditional cutting and forced forming. Since it was first proposed by Emanual Sachs and others at the Massachusetts Institute of Technology in the 1990s, it has attracted many scholars to participate in the research. At present, most of the printers and printing materials on the market are imported products from abroad, which are expensive. The resins used are generally developed, developed...

AI Technical Summary

Problems solved by technology

At present, most of the printers and printing materials on the market are imported products from abroad, which are expensive. The resins used are generally developed, developed, and produced by large companies with strong strength, and the technology is kept secret. Although domestic units have developed relatively cheap 3D printing equipment and resin, but its accuracy and reliability need to be improved, and the variety of photocurable resins is single, which greatly limits the promotion and use of 3D printing technology

[0003] The main components of light-curing 3D printing materials are epoxy resin and its acrylate, and its cured product is a three-way network structure with high cross-linking density. The movement of the main chain is very difficult, so the light-curing 3D printing formed parts The impact strength is low, the flexibility is poor, and the cured product will crack due to deformation and stress concentration when the temperature changes sharply.

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