Photo-thermal double-curing 3D printing resin composition

A resin composition, 3D printing technology, applied in the field of 3D printing, can solve the problem of no heat-curable epoxy resin, etc.

Inactive Publication Date: 2018-12-07
WUHAN TEXTILE UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN106947034A discloses a thermal post-curable 3D printing photosensitive resin and its preparation method, which is fundamentally different from the present invention in that the specific examples described in the patent CN106947034A only contain acrylic photosensitive resin, without heat curable epoxy

Method used

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  • Photo-thermal double-curing 3D printing resin composition
  • Photo-thermal double-curing 3D printing resin composition

Examples

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Effect test

Embodiment 1

[0024] A kind of photo-thermal dual curing 3D printing resin composition comprises 43 parts by mass of polyurethane acrylate (U-6282) and 43 parts by mass of pentaerythritol tetraacrylate, 4 parts by mass of photoinitiator 2,4,6-trimethyl Benzoyl-diphenylphosphine oxide, 9 parts by mass of aliphatic epoxy resin 4,5-epoxycyclohexane-1,2-diglycidyl dicarboxylate, 1 part by mass of imidazole latent heat Curing agent Kingcure 390.

Embodiment 2

[0026] A light-thermal dual curing 3D printing resin composition includes 44 parts by mass of polyether acrylate and 22 parts by mass of trihydroxypropane triacrylate, 2 parts by mass of photoinitiator 2-hydroxyl-2-methyl- 1-phenylacetone, 29 parts by mass of bisphenol A epoxy resin E51, and 3 parts by mass of imidazole latent thermosetting agent Kingcure 390.

Embodiment 3

[0028] A light-thermal hybrid curing 3D printing resin composition includes 46 parts by mass of epoxy acrylate and 30 parts by mass of acryloylmorpholine, and 3 parts by mass of photoinitiator 2-hydroxyl-2-methyl-1-[ 4-(2-hydroxyethoxy)phenyl]-1-propanone, 19 parts by mass of 5,5-dimethylhydantoin epoxy resin, and 2 parts by mass of imidazole latent thermosetting agent Kingcure 390.

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Abstract

The invention provides a photo-thermal double-curing 3D printing resin composition. The photo-thermal double-curing 3D printing resin composition comprises, by weight, 66-86 parts of a radical-type photosensitive resin, 9-29 parts of a heat-curable epoxy resin, 1-4 parts of a radical photoinitiator and 1-3 parts of a latent thermosetting agent. The photo-thermal double-cured 3D printing resin composition is prepared through irradiation with ultraviolet light having wavelength of 365 nm to 500 nm so that the acrylic resin therein undergoes a free radical-initiated polymerization reaction underthe action of a photoinitiator and the reaction product is subjected to heat preservation at 80-120 DEG C for 1-2h after shaping so that the epoxy resin is post-cured under the action of the latent heat curing agent. The photo-thermal double-curing 3D printing resin composition accelerates the speed of photocuring, reduces the volume shrinkage of the product and has high physical and mechanical properties of the product through later heat curing.

Description

technical field [0001] The present invention relates to the field of 3D printing, and more specifically relates to a 3D printing resin composition with dual curing of light and heat. Background technique [0002] 3D printing is a new type of industry. Compared with traditional subtractive manufacturing, it belongs to the category of additive manufacturing. It uses digital files as models, using thermoplastic materials, curable liquid resins or miniature metals. Powder is used as a bonding material, and a technology that uses layer-by-layer printing to build a physical three-dimensional figure. There are also many ways of forming, including fusion lamination molding, selective laser sintering, photocuring rapid prototyping and 3D printing, among which photocuring molding is the most common one. [0003] The commonly used materials for photocuring molding are mainly liquid photosensitive resins, and general photosensitive resins mainly contain three components, namely prepoly...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08F283/00C08F283/10C08F283/06C08F222/14C08F220/58C08F220/20C08F2/48B33Y70/00
CPCC08F2/48C08F283/008C08F283/01C08F283/065C08F283/10C08F283/105B33Y70/00C08F220/58C08F220/20C08F222/103C08F222/104
Inventor 包海峰杨锐王蕾胡睿青
Owner WUHAN TEXTILE UNIV
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