A kind of elastic photosensitive resin for dlp 3D printing and preparation method thereof

A photosensitive resin and elastic technology, applied in the field of elastic photosensitive resin for DLP3D printing and its preparation, can solve the problem of difficult to meet market requirements, and achieve the effects of high molding precision, low product shrinkage, and low volatile odor.

Active Publication Date: 2021-07-13
广州冠杰环保新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent 201510604989.1 discloses a 3D printing photosensitive resin material containing a macromolecular elastomer. One of the best examples of the product can be obtained by electronic universal stretching machine and liquid density testing method: the tensile strength is 14.98MPa, The elongation at break is 82%, and the density is 1.35g / cm 3 (25°C), it is still difficult to meet the current increasing market requirements

Method used

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  • A kind of elastic photosensitive resin for dlp 3D printing and preparation method thereof
  • A kind of elastic photosensitive resin for dlp 3D printing and preparation method thereof
  • A kind of elastic photosensitive resin for dlp 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In a 250 ml three flask, a bisphenol A epoxy resin was added, 10 grams of pure acrylate, 10 grams of 1,6-diol diacrylate, 17 grams of diethylene glycol diacrylate, 2, 4 , 6-trimethylbenzoyl-ethoxy-phenylphosphine oxide 3 grams, dispersant DP983 0.01 grams, 0.01 grams of benzene phenol, Deqian 431 0.01 grams, mixed under 50 ° C, stirred for 50min, The transparent uniform liquid; 0.5 grams of nano-titanium dioxide was added to the above-mentioned solution, and the mechanical stirring was 30 min to obtain a 3D printing elastic photosensitive resin.

[0030] The elastic photosensitive resin is placed in the DLP printer liquid slot, and the stretch pattern model is simulated in the computer. After the slice is completed, the underlying print is set to 20s, the underlying curing light is blue. The remaining layered cured light is white light, the exposure time is set to 8S, then by printing, the stretch pattern is obtained for mechanical performance test, the data is: the stretch...

Embodiment 2

[0032] In a 250 ml three-mouth flask, a bisphenol A epoxy acrylate was added, 15 grams of bisphenol A epoxy resin, 30 grams of polyethylene glycol acrylate, 25 grams of diethylene glycol diacrylate, biphenyloyloyl 3 grams, dispersant BYKP-105 0.01 grams, 0.01 grams of benzene phenol, Deqian 488 0.01 grams, mixed under 60 ° C, stirred for 60min, so that the transparent uniform liquid; in the above-mentioned solution, nano-dioxide 0.5 grams of silicon, mechanical stirring was 30 min to give 3D printing elastic photosensitive resin.

[0033]The elastic photosensitive resin resin is placed in a DLP printer liquid slot, and the stretch spline model is simulated in the computer. After the slice is completed, the underlying print is set to 15S, the underlying curing light is blue. The remaining layered cured light is white light, the exposure time is set to 6s, then by printing, the stretch pattern is obtained for mechanical performance test, the data is: Tensile modulus: 4530n / (mm 2 T...

Embodiment 3

[0035] In a 250 ml three-mouth flask, a difunctional aggregate polyurethane is added, 20 grams of polyacrylate, 20 grams of polyacrylate, 20 grams of cellyldiphenylene glycol diacrylate, diethylene glycol diacrylate 35 g, 2, 4, 6 - Trimethylbenzoyl-ethoxy-phenylphosphine 3 grams, dispersant BYKP-105 0.01 g, 0.01 grams of benzene phenol, Deqian 488 is 0.01 grams, mixed under 55 ° C, stirred 60min The transparent uniform liquid is made; 0.5 grams of nano silica is added to the above-mentioned solution, and the mechanical stirring is 30 min to obtain a 3D printing elastic photosensitive resin.

[0036] The elastic photosensitive resin was placed in a DLP printer liquid slot, and the stretch pattern model was simulated in the computer. After the slice was completed, the underlying print was set to 40s, the underlying curing light was blue. The remaining layered cured light is white light, the exposure time is set to 8S, then by printing, the tensile sample is obtained for mechanical p...

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Abstract

The invention belongs to the field of polymer materials, and specifically relates to an elastic photosensitive resin for 405nm wavelength light-cured DLP 3D printing, which includes the following raw materials in parts by weight: 10-50 parts of elastic acrylate, 30-70 parts of reactive diluent, photoinitiated 1-10 parts of agent, 0.01-0.05 parts of leveling agent, 0.01-0.05 parts of dispersant and 0.01-0.05 parts of polymerization inhibitor. The elastic photosensitive resin of the present invention can be used directly or mixed with other existing photosensitive resins for DLP 3D printing. It can print products with complex structures and certain elasticity, and at the same time has low volatile odor, fast molding speed, small product shrinkage, High-precision molding features.

Description

Technical field [0001] The present invention belongs to the field of polymer materials, and more particularly to a 405 nm wavelength photocuring DLP 3D printing elastic photosensitive resin and its preparation method thereof. Background technique [0002] Light curing rapid molding techniques are developed by liquid photosensitive resins to quickly curing this characteristic development under illumination. 3D printing techniques based on light curing rapidly is mainly divided into: Stereolithography, SLA and projection 3D printing, DLP. The DLP projection three-dimensional printing process printing process is a model that the desired print is designed. After the modeling personnel are designed, the 3D printer is delivered with the 3D printer in STL format, allowing it to be scanned by the various layers of the model, and is illuminated by the laser light source. Photosensitive resins are photopolymerization, and one layer is stacked. The DLP projection three-dimensional printing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/027
CPCG03F7/027
Inventor 周武艺单俊杨董先明伍菲菲
Owner 广州冠杰环保新材料科技有限公司
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