3D printing method, 3D printing light-curing color-changing indicating resin and preparation method thereof

A 3D printing and instruction technology, applied in the field of 3D printing, can solve the problems of decreased mechanical properties of materials, no secondary curing, multiple curing of materials, etc., to reduce volume shrinkage, improve mechanical properties, and good compatibility. Effect

Active Publication Date: 2021-08-27
杭州先临齿科技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Light-curing resin is one of many 3D printing materials. At present, light-curing 3D printing materials need to undergo secondary curing to further improve the mechanical properties of the material after one molding. Not only that, too long secondary curing time will also It leads to a decrease in the mechanical properties of the material, so it is necessary to take a suitable secondary curing time for the material
However, in addition to the obvious difference in performance, the material before and after the second curing is difficult to distinguish in appearance, which leads to the phenomenon of multiple curing of the material and no second curing in the actual application process.

Method used

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  • 3D printing method, 3D printing light-curing color-changing indicating resin and preparation method thereof
  • 3D printing method, 3D printing light-curing color-changing indicating resin and preparation method thereof
  • 3D printing method, 3D printing light-curing color-changing indicating resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]25 parts of polyurethane acrylate, 20 parts of tricyclodecane dimethanol diacrylate, 40 parts of dipropylene glycol diacrylate, 0.5 parts of isopropylthioxanthone (2,4 isomer mixture), 1 part of 2, 4,6-trimethylbenzoyl-diphenylphosphine oxide, 1 part of N-hydroxyethyl-3,3-dimethyl-6-nitroindoline spiropyran, 0.5 part of polytetrafluoroethylene Nano powder, 0.2 part of 6-tert-butyl-2,4-dimethylphenol, 0.1 part of AFE-0030, 0.5 part of BYK-354 are mixed in the batching kettle, 60-70 ℃, 1000rpm / min stirring for 3 hours to obtain a solution , which is 3D printing photosensitive resin. After the prepared photosensitive resin is cured by ultraviolet light, its mechanical strength and volume shrinkage are evaluated. At the same time, the printed sample is subjected to secondary curing, and the mechanical strength and color of the sample after secondary curing are evaluated. In addition, the color of the sample was evaluated after the post-cured sample was placed in an environm...

Embodiment 2

[0045] 30 parts epoxy acrylate, 20 parts (10) ethoxylated bisphenol A diacrylate, 40 parts ethoxylated trimethylolpropane triacrylate, 1.5 parts isopropyl thioxanthone (2,4 isomer Body mixture), 1 part of 1-hydroxy-cyclohexyl-phenyl ketone, 1 part of N-methyl-N-nitrosoaniline, 1.5 parts of polytetrafluoroethylene nano powder, 0.2 parts of p-hydroxyanisole, Mix 0.1 part of ACP-3183 and 0.5 part of AKN-1158 in a batching kettle, stir at 60-70°C and 1000rpm / min for 3 hours to obtain a solution, which is the 3D printing photosensitive resin. After the prepared photosensitive resin is cured by ultraviolet light, its mechanical strength and volume shrinkage are evaluated. At the same time, the printed sample is subjected to secondary curing, and the mechanical strength and color of the sample after secondary curing are evaluated. In addition, the color of the sample was evaluated after the post-cured sample was placed in an environment without ultraviolet light and at room temperatu...

Embodiment 3

[0051] 30 parts of unsaturated polyester resin, 15 parts (4) ethoxylated bisphenol A diacrylate, 45 parts of triethylene glycol dimethacrylate, 2 parts of 819, 1 part of bromopropionyl spirobenzoxazine ring Mix hexane, 3 parts of polytetrafluoroethylene nanopowder, 0.2 part of hydroquinone, 0.1 part of ACP-0544, and 1.5 parts of MOK-2024 in a batching kettle, stir at 60-70 °C and 1000 rpm / min for 3 hours to obtain a solution, It is 3D printing photosensitive resin. After the prepared photosensitive resin is cured by ultraviolet light, its mechanical strength and volume shrinkage are evaluated. At the same time, the printed sample is subjected to secondary curing, and the mechanical strength and color of the sample after secondary curing are evaluated. In addition, the color of the sample was evaluated after the post-cured sample was placed in an environment without ultraviolet light and at room temperature for 24 hours. Each component consists of the following parts by weight...

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Abstract

The invention relates to a 3D printing light-curing color-changing indicating resin and a 3D printing method. The light-curing color-changing indicating resin for 3D printing comprises the following components in parts by weight: 20-40 parts of oligomers; 10-20 parts of monomers; diluted 20-50 parts of the photoinitiator; 1-5 parts of the photoinitiator; 0.1-3 parts of the light indicator; wherein, the light indicator is a nitrogen-containing acrylate monomer, a nitrogen-containing compound, etc., which have a similar potential light indicating effect. A 3D printing method, using the above 3D printing photocurable color-changing indicator resin as a 3D printing photosensitive resin; the 3D printer light source is ultraviolet light with a wavelength of 280-420nm; the secondary curing light source is ultraviolet light with a wavelength of 280-420nm. In the present invention, by adding a "light indicator" into the photosensitive resin, the appearance of the material presents obvious differences before and after secondary curing, thereby effectively avoiding the problems of multiple curing and no secondary curing of the material.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a 3D printing method, a 3D printing photocurable color-changing indicating resin and a preparation method thereof. Background technique [0002] 3D printing is the technology of manufacturing three-dimensional products by adding materials layer by layer according to the designed 3D model. This layer-by-layer accumulation molding technology is also called additive manufacturing, which integrates digital modeling technology, electromechanical control technology, The cutting-edge technology in many adjacent fields such as information technology, material science and chemistry is a kind of rapid prototyping technology, known as the core technology of the "third industrial revolution". Compared with traditional manufacturing, 3D printing has structural optimization, saving The advantages of materials and energy saving can greatly improve the manufacturing efficiency and accuracy o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/00C08F222/14C08F222/20C08F283/10C08F283/01C08F2/48C08K13/02C08K5/3417C08K5/32C08K5/357C08K5/3432C08L51/08C08L27/18B29C64/124B29C64/314B33Y40/20B33Y70/10
CPCC08F2/48C08F283/008C08F283/01C08F283/105C08K5/32C08K5/3417C08K5/3432C08K5/357C08K13/02C08L51/08B29C64/124B29C64/314B33Y40/00B33Y70/00C08L27/18C08F222/103C08F222/102
Inventor 张成龙庞博卢俊团唐玉蓉
Owner 杭州先临齿科技术有限公司
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