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Rubber-type light curing 3D printing material and preparation method thereof

A 3D printing and light-curing technology, which is applied in the field of rubber-type light-curing 3D printing materials and its preparation, can solve the problems of high hardness, limited application range and development, and low flexibility, and achieve low hardness, high elasticity, and high molding precision Effect

Active Publication Date: 2016-12-21
HANGZHOU LEYI NEW MATERIAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the light-curing 3D printing materials developed in China have high hardness and low flexibility. With the rapid development and large-scale application of SLA technology, this will inevitably limit its application scope and development.

Method used

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  • Rubber-type light curing 3D printing material and preparation method thereof
  • Rubber-type light curing 3D printing material and preparation method thereof
  • Rubber-type light curing 3D printing material and preparation method thereof

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preparation example Construction

[0031] Correspondingly, the present invention also provides a method for preparing a rubber-type photocurable 3D printing material, comprising the following steps: mixing the silane-modified hydrogenated bisphenol A epoxy acrylate, epoxy resin, and photosensitive diluent described in the above technical solution , a polyol compound, a cationic photoinitiator, a free radical photoinitiator and an auxiliary agent are mixed, and stirred at 20-60° C. for 30-120 minutes to obtain a rubber-type photocurable 3D printing material. Among them, the stirring temperature is preferably 30-50°C, more preferably 30-40°C; the stirring time is preferably 40-100 minutes, more preferably 50-90 minutes.

[0032] In the present invention, the raw materials are mixed according to the mass percentage, and fully stirred evenly, that is, the rubber-type 3D printing photosensitive resin with high elasticity and high flexibility is prepared. The light-cured product prepared by the present invention has ...

Embodiment 1-6

[0037] Add 100g of hydrogenated bisphenol A epoxy acrylate and 2g of dibutyltin dilaurate catalyst into the three-necked flask and stir, then slowly add 4g of KH-560 dropwise into the flask, heat to 75-85°C, then add 0.1-10g dropwise Distilled water, react at 90°C for 5-6 hours to obtain silane-modified hydrogenated bisphenol A epoxy acrylate;

[0038] Using the raw materials and weight percentages shown in Table 1, mix each raw material, and mechanically stir at 20-60°C for 30-120 minutes until the components are evenly mixed to obtain a rubber-type photocurable 3D printing material.

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Abstract

The invention discloses a rubber-type light curing 3D printing material and preparation method thereof. The rubber-type light curing 3D printing material is prepared from the following raw materials: silane-modified hydrogenated bisphenol A epoxy acrylate, epoxy resin, a photosensitive diluent, a polyol compound, a cationic photoinitiator, a free radical photoinitiator and an auxiliary agent. Compared with the prior art, the silane-modified hydrogenated bisphenol A epoxy acrylat as a prepolymer is added into the 3D printing material, so that the tensile elongation at break of the light curing 3D printing material is greatly improved, and the light curing 3D printing material has excellent elasticity, toughness and softness. In addition, the hardness of the light curing 3D printing material can be adjusted through the change of the ratio of the raw materials, different products with the Shore A hardness of 30 to 95 are obtained, and different requirements can be met. The rubber-type light curing 3D printing material has the advantages of high elasticity, high toughness, low hardness, high flexibility, high forming precision and high gloss.

Description

technical field [0001] The invention relates to the technical field of rapid prototyping, in particular to a rubber-type light-cured 3D printing material and a preparation method thereof. Background technique [0002] 3D printing is a new type of three-dimensional model manufacturing technology that emerged and developed in the late 1980s. It is a technical integration of CAD / CAM, precision machinery, laser technology, and material science and engineering. It is a new technology with strong vitality. . 3D printing technology, also known as additive manufacturing technology, uses a computer to convert a three-dimensional model into a simple two-dimensional plane model, and controls the molding program through a computer to finally obtain a complex shape. The method is difficult to solve the problem, thereby shortening the manufacturing cycle of the product, and greatly improving the production efficiency. [0003] Light-curing rapid prototyping technology (SLA) is the earli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F222/14C08L51/08C08L71/02C08L67/04
CPCC08F283/105C08L51/08C08L2205/04C08L2205/05C08L71/02C08L67/04C08F222/102
Inventor 徐瑞金张小敏刘波应慧春郭珺
Owner HANGZHOU LEYI NEW MATERIAL TECH CO LTD
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