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Structural color material for photosensitive three-dimensional printing and preparation method thereof

A technology of three-dimensional printing and structural color, applied in the field of printing, can solve problems such as clogged nozzles and easy agglomeration of pigments, and achieve the effects of reducing internal stress, low volatility, and broad market prospects

Active Publication Date: 2018-05-04
JIANGMEN HENGZHIGUANG ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many photosensitive resins with small shrinkage and good mechanical properties have been put into production in foreign countries. For example, Somos14120 produced by DSM can replace traditional engineering plastics. However, domestic research on 3D printing photosensitive resins started late, and 3D printing photosensitive resins There are still some problems in the development, and it will become an inevitable trend to develop photosensitive resins for 3D printing that are environmentally friendly, low-cost, and fast curing
At the same time, the color photosensitive resin generally contains pigments and other particles, and the pigments are easy to agglomerate after dispersion, and the diameter of the particles is too large to block the nozzle. Usually, the diameter of the suspended particles in the resin must be controlled below 1 μm

Method used

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  • Structural color material for photosensitive three-dimensional printing and preparation method thereof
  • Structural color material for photosensitive three-dimensional printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of hyperbranched polyurethane acrylic resin:

[0036] In a four-necked flask equipped with a thermometer, a reflux condenser, and a stirrer, pass nitrogen to remove the air, add 10 g of isophorone diisocyanate and 0.07 g of catalyst stannous octoate at 50 ° C, mix well, and heat up to 90 ° C , add 1g of dimethylolpropionic acid, 0.3g of trimethylolpropane and 10g of polyether glycol tetrahydrofuran mixture dropwise according to the metering, and react at 90°C for 4 hours; after cooling to 50°C, use di-n-butylamine method Titrate the reactant, monitor the -NCO value of the reactant until it reaches the theoretical value, weigh 1.2g of hydroxyethyl methacrylate and add it to the tetrahydrofuran solution, raise the temperature to dissolve it, and add it dropwise to the four-necked flask , maintain 50°C for 3 to 4 hours, and finally evaporate the tetrahydrofuran in the reactant to obtain a hyperbranched polyurethane acrylic resin.

[0037] Preparation of struct...

Embodiment 2

[0043] Preparation of structural color materials for photosensitive 3D printing:

[0044] 30 parts of hyperbranched urethane acrylic resin, 10 parts of 1,6-hexanediol diacrylate, 20 parts of alkoxylated pentaerythyl tetraacrylate and 15 parts of propoxylated neopentyl glycol diacrylate in three ports Mix well in the flask, then add 2 parts of Irgacure 1173, 2 parts of Darocur ITX, 1 part of Polyol0301, 2 parts of benzyl alcohol, 1 part of Twin4000, 0.5 part of tripropylene glycol monomethyl ether, 0.5 part of Disperbyk168 and stir evenly; the particle size is 230 nm Mix 6 parts of monodisperse nanoparticle polystyrene (monodispersity is 0.01) and 10 parts of ethylene glycol in a beaker to allow the polystyrene particles to fully wet and disperse evenly; pour the polystyrene nanoparticle component into three mouthfuls bottle, stir well and set aside.

[0045] Printing of color originals:

[0046] First, use the CAD system to design the color original sample, then move the CAD...

Embodiment 3

[0049] Preparation of structural color materials for photosensitive 3D printing:

[0050] 35 parts of hyperbranched polyurethane acrylic resin, 10 parts of ethoxylated oxyphenyl acrylate, 5 parts of tripropylene glycol diacrylate, 5 parts of triethoxylated trimethylolpropane triacrylate, 10 parts of triethylene glycol diacrylate Vinyl ether, 7 parts of 3',4'-epoxycyclohexylmethyl 3,4-epoxyhexylcarboxylate and 13 parts of bis(3-ethyl-3-oxetanyl)methyl ether in Mix well in the three-necked flask, then add 2 parts of Irgacure 184, 1 part of benzophenone, 2 parts of triarylsulfonium hexafluoroantimonate, 1 part of Polyol0301, 2 parts of 3,4-methylenedioxybenzyl alcohol , 1 part of Twin4000, 1 part of tripropylene glycol monomethyl ether, 1 part of Disperbyk168, 1 part of Byk307 and stir evenly; particle diameter is 8 parts of monodisperse nanoparticles poly(styrene-methacrylate-methacrylic acid) of 280 nm ( The monodispersity is 0.03) and 8 parts of ethylene glycol are mixed in a...

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Abstract

The invention belongs to the technical field of printing and in particular relates to a structural color material for photosensitive three-dimensional printing and a preparation method thereof. The structural color material is prepared from the following components: 5 to 15 parts of monodisperse nanoparticle, 15 to 35 parts of hyperbranched polyurethane acrylic resin, 40 to 50 parts of an active diluting agent, 0 to 10 parts of an alcohol solvent, 2 to 5 parts of a photoinitiator, 2 to 10 parts of an auxiliary agent. According to the structural color material provided by the invention, the monodisperse nanoparticles are used as a basic unit for assembling structural color to form a color generation part of a photosensitive three-dimensional printing material; the structural color materialis environmentally friendly and has a bright color, and a condition that a spraying nozzle is blocked can be avoided; meanwhile, the hyperbranched polyurethane acrylic resin with good compatibility and photoreaction properties is utilized so that the problems that a current 3D printing photo-curing speed is not rapid enough, the compatibility between the materials is poor and the shrinkage rate isrelatively large in a curing process are improved. By adopting the structural color material for the photosensitive three-dimensional printing, provided by the invention, produced colored componentswith high precision, environment protection and low cost can be widely applied to fields including decorations, anti-counterfeiting labels and the like and have a wide market prospect.

Description

technical field [0001] The invention belongs to the field of printing technology, and relates to the application technology of three-dimensional printing of photosensitive materials, in particular to the use of monodisperse nanoparticles as the basic unit of assembled structural color to form the color-producing part of photosensitive three-dimensional printing materials, which can produce high-precision, high-surface quality It is especially suitable for making jewelry samples and decorations. Background technique [0002] Three-dimensional printing technology (3DP) is an emerging technology today. It can quickly convert any complex shape design into a three-dimensional solid model or sample without the need for molds. It is fast, environmentally friendly, and high-precision. Features, known as "the most iconic production tool of the third industrial revolution". 3D printing turns multi-dimensional manufacturing into a simple bottom-up two-dimensional superposition, which ...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08F222/14C08F222/20C08F220/30C08K3/36C08K3/22C08L75/14C08L25/06C08L25/14B33Y70/00
CPCC08F283/008C08L75/14B33Y70/00C08K2201/003C08K2003/2241C08K2201/011C08L25/06C08L25/14C08F220/301C08F222/104C08F222/103C08F222/102
Inventor 李珩徐朝华
Owner JIANGMEN HENGZHIGUANG ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
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