3D printing-based photo-curing material and preparation method thereof

A light-curing material and 3D printing technology, applied in the field of 3D printing-based light-curing material and its preparation, can solve the problems of large shrinkage rate, low shrinkage rate, and small temperature effect, so as to shorten the product manufacturing cycle and batch Good stability and the effect of improving production efficiency

Active Publication Date: 2015-04-29
河源然生新材料有限公司
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Problems solved by technology

[0011] The present invention aims at the problems of slow curing speed, poor yellowing resistance, large shrinkage rate and low strength in current 3D printing light-curing materials, and provides a 3D printing-based light-curing material and a preparation method thereof. The prepared 3D printing light-curing material has It has t

Method used

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  • 3D printing-based photo-curing material and preparation method thereof
  • 3D printing-based photo-curing material and preparation method thereof
  • 3D printing-based photo-curing material and preparation method thereof

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Embodiment Construction

[0048] In order to enable those skilled in the art to better understand the technical solution of the present invention, the product of the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings.

[0049] In order to prepare photocurable materials based on 3D printing, water-based polyurethane acrylic resin is prepared first, and the process flow is as follows: figure 2 Shown, the preparation of described aqueous polyurethane acrylic resin comprises the following steps:

[0050] Step 1, the synthesis of the prepolymer, adding an appropriate amount of hydroxyethylacrylamide as a reactive diluent in the reaction kettle, and then adding 39-45 parts of diisocyanate and 0.05-0.15 parts of dibutyltin dilaurate as a catalyst to the reactive diluent , adjust the temperature control of the reactor so that the temperature of the material is 60-90 °C;

[0051] Step 2, chain extension treatment, slowly drop 18-22 parts o...

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Abstract

The invention discloses a 3D printing-based photo-curing material and a preparation method thereof. The 3D printing-based photo-curing material comprises the following components in parts by weight: 50-55 parts of aqueous polyurethane acrylic resin, 20-30 parts of hydrogenated bisphenol A epoxy resin, 10-15 parts of alkoxylated pentaerythritol hexaacrylate, 10-15 parts of three-ring decane dimethyl carbinol dimethacrylate, 8-10 parts of hydroxyl ethyl methacrylate, 8-10 parts of vinyl ether, 3-5 parts of 1-hydroxy cyclohexyl phenyl ketone, 3-5 parts of 4,4'-bis(p-toly) iodonium hexafluorophosphate and 0.5-1 part of an 1080 antioxidant. The method comprises the following preparation steps: primary polymerization of a free radical-cation hybrid system, anti-shrinkage treatment, anti-yellowing treatment and post-treatment. The obtained material has the characteristics of excellent performance, low cost, good consistency and the like; and the used preparation method has the characteristics of being environment-friendly, short in production cycle and good in batch stability.

Description

technical field [0001] The invention relates to the technical field of 3D printing photocurable materials, in particular to a photocurable material based on 3D printing and a preparation method thereof. Background technique [0002] 3D printing technology, also known as rapid prototyping technology, is an accelerated prototyping operation process based on the principle of material accumulation. It is a stacked manufacturing technology that creates a physical object by adding materials to the three-dimensional model of the computer. It is free from complex parts. Degree of limitation, complete digital control and other characteristics, has been widely used in the field of adding points, automobiles, construction machinery, aerospace and aviation. [0003] Photocurable materials are obtained by photopolymerization. Photopolymerization refers to the addition reaction of photocurable monomers or oligomers under the technique of ultraviolet light or visible light. The free-flowin...

Claims

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Application Information

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IPC IPC(8): C08L75/14C08L63/00C08F283/00C08F222/14C08F220/58C08G18/67C08G18/32C08G18/10
Inventor 欧晓光邹名超钟海英何维霖王晖
Owner 河源然生新材料有限公司
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