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Elastic photosensitive resin for 3D printing of digital light processing (DLP) and preparation method of elastic photosensitive resin

A photosensitive resin and elastic technology, which is applied in the field of elastic photosensitive resin for DLP3D printing and its preparation, can solve problems such as difficulty in meeting market requirements, and achieve the effects of low odor, small product shrinkage, and fast molding speed

Active Publication Date: 2018-06-15
广州谱睿汀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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  • Elastic photosensitive resin for 3D printing of digital light processing (DLP) and preparation method of elastic photosensitive resin
  • Elastic photosensitive resin for 3D printing of digital light processing (DLP) and preparation method of elastic photosensitive resin
  • Elastic photosensitive resin for 3D printing of digital light processing (DLP) and preparation method of elastic photosensitive resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In a 250ml three-necked flask, add 20 grams of bisphenol A epoxy resin, 10 grams of pure acrylate, 50 grams of 1,6-hexanediol diacrylate, 17 grams of diethylene glycol diacrylate, 2,4 , 3 grams of 6-trimethylbenzoyl-ethoxy-phenylphosphine oxide, 0.01 grams of dispersant DP983, 0.01 grams of hydroquinone, 0.01 grams of Deqian 431, mixed at 50 ° C, stirred for 50 minutes, To obtain a transparent and uniform liquid; add 0.5 g of nano-titanium dioxide to the solution obtained above, and stir mechanically for 30 minutes to obtain an elastic photosensitive resin for 3D printing.

[0030] Put the elastic photosensitive resin into the liquid tank of the DLP printer, and slice the tensile spline model in the computer. After the slicing is completed, the printing of the bottom layer is set to 20s, and the curing light of the bottom layer is blue light. The rest of the layers are cured with white light, and the exposure time is set to 8s. Then, by printing, a tensile sample is obt...

Embodiment 2

[0032] In a 250ml three-necked flask, add 30 grams of bisphenol A epoxy acrylate, 15 grams of bisphenol A epoxy resin, 30 grams of polyethylene glycol acrylate, 25 grams of diethylene glycol diacrylate, dibenzoyl 3 grams, 0.01 grams of dispersant BYKP-105, 0.01 grams of hydroquinone, 0.01 grams of Deqian 488, mixed at 60 ° C, stirred for 60 minutes, so that a transparent and uniform liquid was obtained; 0.5 g of silicon, mechanically stirred for 30 minutes to obtain an elastic photosensitive resin for 3D printing.

[0033]Put the elastic photosensitive resin into the liquid tank of the DLP printer, and slice the tensile spline model in the computer. After the slicing is completed, the printing of the bottom layer is set to 15s, and the curing light of the bottom layer is blue light. The rest of the layers are cured with white light, and the exposure time is set to 6s, and then the stretched sample is obtained by printing for mechanical performance testing. The data is: tensile...

Embodiment 3

[0035] In a 250ml three-necked flask, add 25 grams of difunctional polyurethane acrylate, 20 grams of polyacrylate, 20 grams of ethylene glycol diacrylate, 35 grams of diethylene glycol diacrylate, 2,4,6 - Trimethylbenzoyl-ethoxy-phenylphosphine oxide 3 grams, dispersant BYKP-105 0.01 grams, hydroquinone 0.01 grams, Deqian 488 0.01 grams, mixed at 55 ° C, stirred for 60 minutes , so that a transparent homogeneous liquid is obtained; to the solution obtained above, add 0.5 grams of nano-silica, and mechanically stir for 30 minutes to obtain an elastic photosensitive resin for 3D printing.

[0036] Put the elastic photosensitive resin into the liquid tank of the DLP printer, and slice the tensile spline model in the computer. After the slicing is completed, the printing of the bottom layer is set to 40s, and the curing light of the bottom layer is blue light. The rest of the layers are cured with white light, and the exposure time is set to 8s, and then the stretched sample is o...

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Abstract

The invention belongs to the field of a high molecular material, and particularly relates to photo-cured elastic photosensitive resin with wavelength being 405 nanometers for 3D printing of digital light processing (DLP). The elastic photosensitive resin comprises the following raw materials based on parts by weight: 10-50 parts of elastic acrylate, 30-70 parts of active diluents, 1-10 parts of photoinitiator, 0.01-0.05 part of flatting agent, 0.01-0.05 part of dispersning agent and 0.01-0.05 part of polymerization inhibitor. The elastic photosensitive resin can be directly used for 3D printing of DLP or can be mixed with other existing photosensitive resin, a product with a complicated structure and certain elasticity can be printed, meanwhile, the elastic photosensitive resin has the characteristics of small volatile odor, rapid formation speed, small product shrinkage rate, high formation accuracy and the like.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a 405nm wavelength light-cured elastic photosensitive resin for DLP 3D printing and a preparation method thereof. Background technique [0002] Light-curing rapid prototyping technology is developed by utilizing the characteristic that liquid photosensitive resin can undergo chemical reaction under light and cure rapidly. The 3D printing technology based on photocuring rapid prototyping is mainly divided into: stereolithography rapid prototyping technology (Stereolithography, SLA) and projection three-dimensional printing process (Digital Light Processing, DLP). The printing process of the DLP projection 3D printing process is to deliver the model to be printed to the 3D printer in STL format after being designed by the modeler, and let it perform light scanning according to each layer of the model, and the parts irradiated by the laser light source The photosensitiv...

Claims

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Application Information

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IPC IPC(8): G03F7/027
CPCG03F7/027
Inventor 周武艺单俊杨董先明伍菲菲
Owner 广州谱睿汀新材料科技有限公司
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