LED light-curing flexible photosensitive resin for 3D printing, and preparation method thereof

A 3D printing, photosensitive resin technology, applied in the direction of additive processing, can solve the problems of low temperature resistance, flexibility and poor bending, achieve good flexibility and bending resistance, improve low temperature resistance, reduce emissions Effect

Inactive Publication Date: 2019-11-19
济南赢科新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a LED photocurable flexible photosensitive resin for 3D printing and its preparation method, so as to overcome the low temperature resistance of the photocurable resin in the prior art at extremely cold low temperatures such as -20°C. , poor flexibility and bendability defects

Method used

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  • LED light-curing flexible photosensitive resin for 3D printing, and preparation method thereof
  • LED light-curing flexible photosensitive resin for 3D printing, and preparation method thereof
  • LED light-curing flexible photosensitive resin for 3D printing, and preparation method thereof

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Embodiment 1

[0047] Table 1 shows the formulation of the LED photocurable low temperature resistant flexible photosensitive resin for 3D printing in this embodiment.

[0048] Table 1

[0049]

[0050] According to the formulations of the components listed in Table 1, at first pure acrylic resin UV1125-A2, photosensitive prepolymer resin CN965NS, CN8200 are added to reactive diluent (monofunctional monomer methacrylic acid isobornyl and difunctional In the monomer neopentyl glycol diacrylate), the resin is completely dissolved when stirring at a high speed of 4500rad / min for 50min, and then adding initiator, leveling agent and polymerization inhibitor under the condition of avoiding light Stirring at a speed of 60 minutes, the LED photocurable flexible photosensitive resin for 3D printing is obtained. The photosensitive resin has a viscosity of 50.52cp at 25°C, and it has good printing fluency on a Polyjet 3D printer. It can be completely cured after being irradiated with LED light with...

Embodiment 2

[0052] Table 2 shows the formulation of the LED photocurable low temperature resistant flexible photosensitive resin for 3D printing in this embodiment.

[0053] Table 2

[0054]

[0055] According to the formulations of the components listed in Table 2, firstly, vinyl chloride resin E15 / 45M, photosensitive prepolymer resin CN966J75NS, CN2204 are added to the active diluent (monofunctionality monomer acryloylmorpholine and difunctionality single Propoxylation (2) dipropylene glycol acrylate), when stirring at a high speed of 4000rad / min for 60min, the resin is completely dissolved, and then adding initiator, leveling agent and polymerization inhibitor under the condition of avoiding light and then adding 3500rad / min Stirring at a speed of 50min / min for 3D printing LED photocurable flexible photosensitive resin. The photosensitive resin has a viscosity of 54.29cp at 25°C, and it has good printing fluency on a Polyjet 3D printer. It can be completely cured when irradiated wi...

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Abstract

The invention relates to an LED light-curing flexible photosensitive resin for 3D printing, and a preparation method thereof. The resin includes, by mass, 30.0-60.0% of a photosensitive prepolymer resin, 3.0-10.0% of a nonreactive resin, 20.0-50.0% of a reactive diluent, 5.0-10.0% of a photoinitiator, 0.5-1.5% of a leveling agent and 0.3-1.5% of a polymerization inhibitor. The method includes thefollowing steps: adding the nonreactive resin and the photosensitive prepolymer resin to the reactive diluent, and then adding the initiator, the leveling agent and the polymerization inhibitor. The resin overcomes the shortcomings of existing photosensitive resins, such as poor flexibility, poor bending resistance and surface cracking under an extreme low temperature of -20 DEG C, can be formed by a Polyjet 3D printing technology and printer LED light-curing molding, and has the advantages of simple process, small environmental pollution, and rapidness in molding.

Description

technical field [0001] The invention belongs to the field of photocurable resin and its preparation, in particular to an LED photocurable flexible photosensitive resin for 3D printing and a preparation method thereof. Background technique [0002] 3D printing technology is a kind of rapid prototyping technology. It is based on digital model files, using powdered metal, plastic and polymer materials and other bondable materials to construct a three-dimensional structure of an object by layer-by-layer stacking technology. Commonly used 3D molding technologies mainly include: three-dimensional solidification molding, laser sintering, metal powder layer fusion and light-curing rapid prototyping. Among them, the light-curing rapid prototyping technology is the most common one in recent years because of its simple use and strong practicability. [0003] With the rapid development of 3D technology and the continuous change and innovation of 3D printing technology, a single genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F283/10C08F283/02C08F265/06C08F259/04C08F220/18C08F220/58B33Y70/00
CPCB33Y70/00C08F259/04C08F265/06C08F283/006C08F283/02C08F283/10C08F220/58
Inventor 冉淑燕宋雪霞李文彬
Owner 济南赢科新材料科技有限公司
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