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Dispersing agent and photo-cureable 3D printing ink

A dispersant and catalyst technology, which is applied in the field of dispersant and light-curable 3D printing ink, can solve the problems of inability to widely apply organic or inorganic pigment dispersion, unfavorable dispersant storage, dispersant gel, etc., and achieve ink comprehensive performance Good, avoid gel and sedimentation, simple preparation process

Pending Publication Date: 2021-10-08
昆山九璨新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is not only unfavorable to the storage of the dispersant, but also leads to gelation and sedimentation of the dispersant due to changes in the performance of the dispersant during production and use.
[0006] In the Chinese invention patent application CN102964920A (a kind of ink for ceramic inkjet printing and its preparation method), the dispersant used in the ink is a high molecular weight polyurethane type dispersant or a high molecular weight polyacrylate type dispersant, and the molecular weight of the dispersant is 1000-10000, but this dispersant can only be used for some commodities, and cannot be widely used in the dispersion of various organic or inorganic pigments in inks

Method used

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  • Dispersing agent and photo-cureable 3D printing ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Prepare dispersant F1, comprise the steps:

[0042] (1) Add 14 parts of polycaprolactone diol, 7 parts of polypropylene glycol, and 69 parts of tripropylene glycol diacrylate into the reaction vessel, mix and heat up to 70°C, and pass nitrogen gas after the solid components are completely dissolved, and then add 0.03 Parts of dibutyltin dilaurate, 7 parts of isophorone diisocyanate, reacted at 70°C;

[0043] (2) After reacting for 3 hours, detect the NCO content. When the NCO content is less than 1.35, add 0.9 parts of dimethylol propionic acid, 1.9 parts of hydroxyethyl acrylate, and 0.07 parts of hydroquinone monomethyl ether to react at 70°C;

[0044] (3) After reacting for 3 hours, detect the NCO content, when the NCO content is less than 0.3, lower the temperature to 50°C, and add 0.5 parts of methanol to react;

[0045] (4) After reacting for 30 minutes, detect the NCO content. When the NCO content is less than 0.1, the dispersant is obtained.

[0046] The dispe...

Embodiment 2

[0048] Prepare dispersant F2, comprise the steps:

[0049] (1) Add 14 parts of polycaprolactone diol, 7 parts of polyethylene glycol, and 71 parts of 1,6-hexanediol diacrylate into the reaction vessel, mix and heat up to 70°C until the solid components are completely dissolved Introduce nitrogen, then add 0.03 parts of dibutyltin dilaurate and 6 parts of toluene diisocyanate, and react at 70°C;

[0050] (2) After reacting for 3 hours, detect the NCO content. When the NCO content is less than 1.35, add 0.9 parts of dimethylol propionic acid, 1.9 parts of 2-hydroxy ethyl methyl acrylate, and 0.07 parts of hydroquinone monomethyl ether in Reaction at 70°C;

[0051] (3) After reacting for 3 hours, detect the NCO content, when the NCO content is less than 0.3, lower the temperature to 50°C, and add 0.5 parts of methanol to react;

[0052] (4) After reacting for 30 minutes, detect the NCO content. When the NCO content is less than 0.1, the dispersant is obtained.

[0053] The dis...

Embodiment 3

[0060] The preparation of 3D printing ink comprises the following steps:

[0061] According to the ratio in Table 1, uniformly mix the dispersant, filler, and 1 / 4 portion of the diluting monomer, then use a three-roller rolling machine to roll and disperse the color paste, and then add the reactive resin and the remaining amount of diluent in sequence. After the monomer, photoinitiator and additive are mixed and stirred evenly, the 3D printing ink is obtained, which is recorded as S1.

[0062] Raw material composition of 3D printing ink S1 in Table 1 Example 3

[0063]

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Abstract

The invention discloses a dispersing agent and photo-cureable 3D printing ink, belongs to the technical field of dispersing agents, and discloses a formula composition, a preparation method and application of the dispersing agent. The dispersing agent comprises the following raw materials: polyol, isocyanate, hydroxy acid, hydroxyl gadoleic acid ester, monohydric alcohol and the like. The isocyanate and the polyol are subjected to a polymerization reaction, and the hydroxy acid, the hydroxyl gadoleic acid ester and the monohydric alcohol are adopted to control the content of NCO in a system until the NCO value in the dispersing agent is less than 0.1. The dispersing agent obtained by the invention can directly replace a commercially available dispersing agent to disperse various organic or inorganic pigments and prepare various inks. The photo-curable 3D printing ink prepared by using the dispersing agent has excellent dispersing performance: the dispersing particle size is less than 5 microns, the viscosity is 10000-20000cps, and the viscosity variation is small; and the comprehensive performance is good: the gloss of a coating film can be greater than 95 at an angle of 60 degrees, the covering power is greater than 85%, and the pencil hardness is greater than HB.

Description

technical field [0001] The invention belongs to the technical field of dispersants, can be applied to 3D printing technology, and specifically relates to a dispersant and photocurable 3D printing ink. Background technique [0002] The dispersion of organic or inorganic solid particles in the medium is often involved in the production process of pigments, coatings, inks, and filled plastics. Because the dispersibility of these solid particles in the medium not only affects the product yield, energy consumption and raw material consumption, but also affects the final quality of the product, such as gloss, coloring strength, tensile strength, etc., so in order to make the solid particles in Good dispersion in the medium, dispersant is needed in the above production process. [0003] Generally, the simpler method for colored 3D printing inks is to directly add commercially available colorants to the ink, or directly add pigments and toners to stir and disperse. Test, the latte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/48C08G18/42C08G18/12C08G18/28C09D11/30
CPCC08G18/4018C08G18/4277C08G18/4825C08G18/4833C08G18/12C08G18/672C08G18/282C09D11/30C08G18/348
Inventor 庄皓云
Owner 昆山九璨新材料科技有限公司
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