Photosensitive resin composition for photocuring 3D printing elastomer and preparation method thereof

A 3D printing, photosensitive resin technology, applied in the chemical industry, can solve the problems of high cost, insufficient tensile strength and elongation at break, and achieve the effect of reducing material usage costs, breaking technology monopoly, and fast curing

Pending Publication Date: 2021-07-13
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing technology has made some progress in high-elastic and high-strength 3D printing photosensitive resin, its tensile strength and elongation at break are still not high enough, and there are problems such as high cost. Therefore, there is an urgent need for a cheap, easy-to-operate Simple yet highly elastic and high-strength photosensitive resin composition

Method used

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  • Photosensitive resin composition for photocuring 3D printing elastomer and preparation method thereof
  • Photosensitive resin composition for photocuring 3D printing elastomer and preparation method thereof
  • Photosensitive resin composition for photocuring 3D printing elastomer and preparation method thereof

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Embodiment 1

[0059] The preparation of embodiment 1 sample 1#~sample 6#, preparation steps are as follows:

[0060] (1) In a round-bottomed flask equipped with isocyanate-terminated polyester (ether), continuously drop and measure hydroxyl-containing acrylic monomers through a separatory funnel, and react under nitrogen protection and 50-100°C 0.1-7.0h;

[0061] (2) Vacuumize and defoam the reacted product to obtain a flexible polyurethane photosensitive prepolymer terminated by acrylic acid groups;

[0062] (3) In terms of percentage content, 20-60% of acrylic group-terminated polyester (ether), 20-60% of acrylic resin, 20-30% of polyethylene glycol dimethacrylate resin, 20-60% Mix 50% active diluent, 1.0-5.0% photoinitiator, 0.1-1.0% defoamer, 0.1-1.0% leveling agent, 0.1-1.0% antioxidant and heat up to 30-80°C, after mixing evenly, That is, a photosensitive resin composition for photocuring 3D printing elastomers is obtained.

[0063] The relationship between the sample number and th...

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Abstract

The invention discloses a photosensitive resin composition for photocuring a 3D printing elastomer and a preparation method of the photosensitive resin composition. The composition is prepared from the following raw materials in percentage content: 20 to 60 percent of acrylic-terminated flexible polyurethane prepolymer, 20 to 60 percent of polyurethane acrylate resin, 20 to 50 percent of polyethylene glycol dimethacrylate resin, 20 to 50 percent of reactive diluent, 1.0 to 5.0 percent of photoinitiator, 0.1 to 1.0 percent of defoaming agent, 0.1 to 1.0 percent of flatting agent and 0.1 to 1.0 percent of antioxidant. The photosensitive resin composition for the photocuring 3D printing elastomer has high reaction activity and can be used for conventional SLA, DLP and other desktop-level 3D printing equipment, and printed products are good in wear resistance, small in shrinkage rate, not prone to yellowing, good in elasticity and excellent in mechanical property.

Description

technical field [0001] The application relates to a photosensitive resin composition for photocuring 3D printing elastomers and a preparation method thereof, belonging to the field of chemical technology. Background technique [0002] Photocuring 3D printing With the promotion and application of SLA technology and DLP technology, the market demand for 3D printing consumables is becoming more and more diverse, which requires that photosensitive resins should have different systems and different properties. With the development of some medical models and handicraft design, the demand for flexible resin materials is increasing, so the development of flexible resins that meet the needs will greatly promote the application of SLA and DLP technology. The preparation of photosensitive resins suitable for photocuring 3D printing elastomeric materials is very limited, but recent advances have begun to answer this question. Commercially available photosensitive resin products based o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F283/06C08F222/14C08F220/20B33Y70/00
CPCC08F283/008C08F283/065B33Y70/00C08F222/103C08F220/20
Inventor 卓东贤陈少云罗永强陈苗苗陈柳昕瞿波王睿郑燕玉刘小英李文杰陈彦黄慧玲许一昊
Owner QUANZHOU NORMAL UNIV
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