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A kind of pigment derivative, color UV light curing composition and preparation method thereof

A technology of pigment derivatives and compositions, applied in the field of 3D printing, can solve the problems of easy fading and great dissolving ability, and achieve the effect of improving color saturation, bright color and increasing concentration

Active Publication Date: 2022-04-12
DONGGUAN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] UV resin is composed of polymer monomer and prepolymer, which is added with photo (ultraviolet) initiator or photosensitizer, which will immediately cause polymerization reaction and complete curing under the irradiation of ultraviolet light of a certain wavelength. The photosensitive resin is generally in liquid state. It is used to make materials with high strength, high temperature resistance, waterproof, etc. Photosensitive resin 3D printing is often used in domestic mainstream SLA rapid prototyping equipment, most imported or domestic DLP desktop machines, etc. At present, since 3D printing resin is usually pure without water or solvent UV-type light-curable resin, so there is a big problem with the solubility of 3D printing resins to organic pigments. Oil-soluble dyes are usually used to achieve color coloring of UV-type light-curable resins, but a major defect of this method is that it dissolves into Molecular dyes are not resistant to long-term UV light or sunlight and are prone to fading

Method used

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  • A kind of pigment derivative, color UV light curing composition and preparation method thereof
  • A kind of pigment derivative, color UV light curing composition and preparation method thereof
  • A kind of pigment derivative, color UV light curing composition and preparation method thereof

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preparation example Construction

[0068] A preparation method of a colored UV photocurable composition, comprising, in a clean yellow light environment, weighing pigment derivatives, organic soluble dyes, resins, photoinitiators and auxiliary agents according to the proportion and adding them to a closed stirrer at room temperature Stir at a linear speed of 3-4M / s for 3-4 hours to obtain a mixed composition. Transfer the mixed composition to a positive pressure filter to pass through the membrane to remove a very small amount of organic / inorganic pigment derivatives that are not fully dissolved and Other particles are finally collected in a conical flask to obtain a colored UV photocurable composition.

[0069] The positive pressure filter is made of 305 stainless steel container, connected to a high-purity nitrogen device that can control the pressure at 0.1-0.8 MPa, such as a nitrogen cylinder with a pressure reducing valve.

[0070] As a further embodiment, the positive pressure filter is provided with a fl...

Embodiment 1

[0075] The derivative of 1.5g organic pigment PR177, product PR-1; 4g organic soluble dye-Red 218RL; 90g monomer resin tripropylene glycol diacrylate; 0.8g photoinitiator TPO, 0.8g photoinitiator Irg184, 3g Photoinitiator Irg369; 1g leveling agent EFKA-3883; weighed in a clean yellow light environment and added to a closed mixer, stirred at room temperature at a line speed of 3M / s for 4H to obtain a mixed composition, and then used an external device The positive pressure filter of the nitrogen cylinder of the pressure reducing valve, transfer the mixed composition into it, pass through a set of partial fluoride membranes, including: 1200nm-800nm-440nm-800nm-1200nm five layers, and finally collect 90.8g of red light with a triangular flask Curing composition. After printing it with a thickness of 50um using a 3D printer, observe the chromaticity through the color card.

Embodiment 2

[0077] The derivative of 0.5g organic pigment PV23, product PB-2; 3.5g soluble dye Bule 70; 45g monomer resin tripropylene glycol diacrylate, 45g monomer resin pentaerythritol triacrylate; 0.8g photoinitiator TPO, 0.8g photoinitiator Irg184, 3g photoinitiator Irg369; 1g leveling agent EFKA-3883, 0.2g coupling agent KH-560; weighed in a clean yellow light environment and added to a closed mixer, at room temperature with a wire Stir at a speed of 3M / s for 3H to obtain a mixed composition, then use a positive pressure filter connected to a nitrogen cylinder equipped with a pressure reducing valve to transfer the mixed composition to it, and pass through a set of partial fluoride membranes, including: 1200nm-800nm-440nm -5 layers from 800nm ​​to 1200nm, and finally 92.2g of blue photocurable composition was collected in a conical flask. After printing it with a thickness of 50um using a 3D printer, observe the chromaticity through the color card.

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Abstract

The invention discloses a pigment derivative, which is prepared from nano pigments through acidification and / or amination treatment; the nano pigments are red pigments, yellow pigments, green pigments, blue-violet pigments, white pigments or black pigments; the red pigments are Pyrene-based pigments and / or anthraquinone-based pigments; yellow pigments are mixtures of disazo-based yellow pigments or Indian phosphorous-based yellow pigments; green pigments are halogenated phthalocyanine-based pigments; blue-violet pigments are blue pigments and dioxazine violet A mixture of pigments, wherein the blue pigment is a halogenated phthalocyanine pigment or a halogenated phthalocyanine pigment; the white pigment is a metal oxide pigment; and the black pigment is carbon black, carbon nanotube, iron oxide, titanium black or aniline black. The invention also provides a colored UV photocurable composition and a preparation method thereof. The pigment derivative of the present invention realizes the dissolution and dispersion of the nanometer pigment in the UV photocurable resin, and greatly increases the concentration of the pigment.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a pigment derivative, a colored UV photocurable composition and a preparation method thereof. Background technique [0002] UV resin is composed of polymer monomer and prepolymer, which is added with photo (ultraviolet) initiator or photosensitizer, which will immediately cause polymerization reaction and complete curing under the irradiation of ultraviolet light of a certain wavelength. The photosensitive resin is generally in liquid state. It is used to make high-strength, high-temperature-resistant, waterproof, etc. materials. Photosensitive resin 3D printing is often used in domestic mainstream SLA rapid prototyping equipment, most imported or domestic DLP desktop machines, etc. At present, since 3D printing resin is usually pure without water or solvent UV-type light-curable resin, so there is a big problem in the solubility of 3D printing resin to organic pigments. Usually, the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K9/02C08K5/00C08K5/435C08K5/357C08K5/3462C08K3/04C08F122/20C08F220/18C08F220/20C08F2/50C08F2/44C09B67/20C09C1/48B33Y70/10
Inventor 李伟李大红曹建平高峰薛晖汤俊松刘日明
Owner DONGGUAN POLYTECHNIC