Photosensitive resin for 355nm SLA (Stereo Lithography Apparatus) 3D printing of arm orthoses

A photosensitive resin and arm technology, applied in the direction of additive processing, etc., can solve the problems of 3D printing parts that cannot meet industrial use, 3D printing parts deformation, large shrinkage rate, etc., to reduce R&D and production costs, medium elongation at break The effect of high rate, deflection resistance and high molding rate

Inactive Publication Date: 2019-02-22
SHANGHAI BALCK FLAME MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing SLA (Stere-Lithography Apparatus, stereolithography) a class of resin compositions have the problems of excessive shrinkage (generally exceeding 5%, maximum exceeding 8%) and insufficient strength after complete curing, and excessive shrinkage will lead to complete curing. After curing, the 3D printed parts are deformed, and the strength is not enough to make the 3D printed parts unable to meet the requirements of industrial use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 20 parts of acrylic acid lauric acid (LA), 10 parts of polyurethane acrylate, 20 parts of bisphenol A epoxy resin, 0.2 parts of 2-hydroxy-2-methyl-phenylacetone, phenylthiophenyl diacetone in parts by mass 0.2 part of phenylsulfonium salt, 1 part of silicon dioxide, 0.05 part of polysiloxane-polyether copolymer, 0.3 part of modified polysiloxane, 0.05 part of titanium dioxide;

[0020] The preparation steps are: first stir and mix the liquid components in the technical formula components in a vacuum mixer, then add the solid components in the components and stir them evenly in a reaction kettle, then grind them on a grinder, filter them through a 400-mesh filter Filtration in the net, and finally packaging.

Embodiment 2

[0022] Take 25 parts of hydroxyethyl acrylate (HEA), 30 parts of polyester acrylate, 35 parts of aliphatic epoxy resin, 1 part of hydroxy-cyclohexyl ketone, and bis(4-dodecylbenzene) iodine in parts by mass. 1 part of onium hexafluoroantimonate, 5 parts of silicon nitride, 0.08 part of polysiloxane-polyether copolymer, 0.6 part of modified polysiloxane, 2 parts of carbon black;

[0023] The preparation steps are: first stir and mix the liquid components in the technical formula components in a vacuum mixer, then add the solid components in the components and stir them evenly in a reaction kettle, then grind them on a grinder, filter them through a 400-mesh filter Filtration in the net, and finally packaging.

Embodiment 3

[0025] Get 28 parts of tripropylene glycol diacrylate (TPGDA), 40 parts of polyether acrylate, 45 parts of bisphenol A epoxy resin, 2-hydroxyl-2-methyl-p-hydroxyethyl ether base phenylacetone in parts by mass 1.5 parts, 1.5 parts of phenylthiophenyl diphenylsulfonium salt, 8 parts of carbon fiber, 0.09 parts of polysiloxane-polyether copolymer, 0.8 parts of modified polysiloxane, 2.5 parts of phthalocyanine green;

[0026] The preparation steps are: first stir and mix the liquid components in the technical formula components in a vacuum mixer, then add the solid components in the components and stir them evenly in a reaction kettle, then grind them on a grinder, filter them through a 400-mesh filter Filtration in the net, and finally packaging.

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PUM

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Abstract

The invention provides a photosensitive resin material for 355nm SLA (Stereo Lithography Apparatus) 3D printing. The photosensitive resin material comprises the following raw materials in parts by mass: 20-30 parts of a monomer raw material, 10-50 parts of an acrylic resin raw material, 20-50 parts of an epoxy resin raw material, 0.2-2 parts of free radical photoinitiator, 0.2-2 parts of cationicphotoinitiator, 1-10 parts of filler, 0.05-0.1 part of antifoaming agent, 0.3-1 part of leveling agent and 0.05-3 parts of pigment. The photosensitive resin material for the 355 nm SLA 3D printing hasthe beneficial effects that the resin product has moderate strength and medium elongation at break, has the advantages of high flex resistance and high molding rate and can meet the manufacturing requirements of medical arm orthosis products; and the photosensitive resin material can cooperate with a mainstream 355nm SLA 3D printer, has excellent universality and can be put in research and development and production processes with no need for purchasing a separate printer, thereby reducing the research and development and production costs of companies.

Description

technical field [0001] The invention relates to the technical field of 3D printing new materials, in particular to a 355nm SLA 3D printing photosensitive resin applied to arm braces. Background technique [0002] SLA 3D printing technology, also known as light-curing rapid prototyping technology, its principle is that the computer controls the laser beam to scan the surface of the photosensitive resin point by point, and the resin sheet layer in the scanned area is cured by photopolymerization to form the part. A TLC. The workbench is moved down by a distance of one layer thickness, so that a new layer of liquid resin is applied on the surface of the cured resin, and the scanning process of the next layer is carried out, and so on, until the entire prototype is manufactured. Rapid prototyping technology integrates the research results of laser, computer-aided design and manufacturing, photochemistry, new materials and other scientific and technological research results, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L75/14C08L71/02C08L67/06C08L83/12C08L83/04C08K3/22C08K3/36C08K3/04C08K7/06B33Y70/00
CPCB33Y70/00C08K2003/2241C08K2003/2244C08L63/00C08L71/02C08L2205/02C08L2205/035C08L75/14C08L83/12C08L83/04C08K3/22C08K3/36C08L67/06C08K3/34C08K3/04C08K7/06
Inventor 陆益栋路滕新张楠
Owner SHANGHAI BALCK FLAME MEDICAL TECH CO LTD
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