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A kind of coated aluminum pigment suitable for multi-system and preparation method thereof

An aluminum pigment, coated technology, applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problem of anti-coarse agglomeration and achieve good storage stability

Active Publication Date: 2020-08-07
安徽天易金属新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a multi-system coated aluminum pigment and its preparation method. The coated aluminum pigment solves the problem of anti-coarse agglomeration of the product and improves the storage stability of the product

Method used

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  • A kind of coated aluminum pigment suitable for multi-system and preparation method thereof
  • A kind of coated aluminum pigment suitable for multi-system and preparation method thereof
  • A kind of coated aluminum pigment suitable for multi-system and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A preparation method adaptable to multi-system coated aluminum pigments, comprising the following steps:

[0028] a. Silica-coated aluminum pigment: disperse the oil-soluble aluminum pigment in an alcoholic solvent, add 1 part of PH regulator, 3 parts of coupling agent, 10 parts of tetraethyl orthosilicate according to the number of solid content, Aging after reaction, and suction filtration to obtain flaky aluminum-silver paste coated with silicon dioxide. The above-mentioned alcohol solvent is a mixture of n-propanol and isopropanol; the above-mentioned pH regulator is sodium bicarbonate; the above-mentioned coupling agent is KH-550.

[0029] b. Solvent replacement and surface treatment: add the silica-coated flaky aluminum-silver paste obtained in step a into a hydrocarbon solvent, count 30 parts of flaky aluminum-silver paste by solid content, and then add 3 parts The silane coupling agent and 1 part of acrylic monomer are stirred, and then solid-liquid separation ...

Embodiment 2

[0032] A preparation method adaptable to multi-system coated aluminum pigments, comprising the following steps:

[0033] a. Silica-coated aluminum pigment: disperse the oil-soluble aluminum pigment in an alcoholic solvent, add 1 part of pH regulator, 4 parts of coupling agent, 12 parts of ethyl orthosilicate according to the number of solid content, Aging after reaction, and suction filtration to obtain flaky aluminum-silver paste coated with silicon dioxide. The above-mentioned alcohol solvent is a mixture of isopropanol and ethanol; the above-mentioned pH regulator is ammonia water; the above-mentioned coupling agent is a mixture of KH-560 and KH-570.

[0034] b. Solvent replacement and surface treatment: add the silica-coated flaky aluminum-silver paste obtained in step a into a hydrocarbon solvent, counting 40 parts of flaky aluminum-silver paste in terms of solid content, and then add 3 parts The silane coupling agent and 2 parts of acrylic monomers are stirred, and then...

Embodiment 3

[0037] A preparation method adaptable to multi-system coated aluminum pigments, comprising the following steps:

[0038] a. Silica-coated aluminum pigment: disperse the oil-soluble aluminum pigment in an alcoholic solvent, add 2 parts of pH regulator, 4 parts of coupling agent, 15 parts of tetraethyl orthosilicate according to the number of solid content, Aging after reaction, and suction filtration to obtain flaky aluminum-silver paste coated with silicon dioxide. The above-mentioned alcohol solvent is a mixture of ethanol and n-butanol; the above-mentioned pH regulator is ethylenediamine; the above-mentioned coupling agent is a mixture of A-151 and A-171.

[0039] b. Solvent replacement and surface treatment: Add the silica-coated flaky aluminum-silver paste obtained in step a into hydrocarbon solvent oil, counting 50 parts of flaky aluminum-silver paste according to the solid content, and then add 4 parts The silane coupling agent and 2 parts of acrylic monomers are stirre...

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Abstract

The invention discloses a preparation method of a coated aluminum pigment adapting to multiple systems. The method comprises the following steps: 1, dispersing an oil-soluble aluminum pigment in an alcohol solvent, adding a pH adjuster, a coupling agent and ethyl orthosilicate, performing a reaction, ageing the obtained reaction product, and performing suction filtration to obtain a silica coatedsheet aluminum paste; 2, adding the silica coated sheet aluminum paste obtained in step 1 into a hydrocarbon solvent, adding the silane coupling agent and an acrylic monomer, performing stirring treatment, and performing solid-liquid separation to obtain a sheet aluminum particle filter cake; and 3, adding the sheet aluminum particle displaced in step 2 into the hydrocarbon solvent, dropwise adding a monomer and an initiator to the obtained solution, continuously keeping the temperature, performing ageing, and performing solid-liquid separation to obtain the finished product. The product has the following advantages: the product has high brightness; the product does not change color after being immersed in a 5% NaOH solution at room temperature for 72 h, so the product has a good storage stability; and the product has no thickening or agglomerating phenomenon after being stored in a polyurethane acrylate system at 50 DEG C for 30 d.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a multi-system coated aluminum pigment and a preparation method thereof. Background technique [0002] Aluminum powder pigment is one of the important metal pigments, the main application areas are industrial coatings, automotive coatings, printing inks and plastic processing industry. In the prior art, oil-soluble aluminum pigments are often used to coat the surface of acrylic resin for protection, but in the acrylic polyurethane and UV ink systems, anti-coarseness and agglomeration are prone to occur. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a multi-system coated aluminum pigment and its preparation method. The coated aluminum pigment solves the problem of anti-coarse agglomeration of the product and improves the storage stability of the product. [0004] The technical problem to be solved by the present inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/64C09C3/06C09C3/08C09C3/10C09C3/12
CPCC09C1/648C09C3/006C09C3/063C09C3/08C09C3/10C09C3/12
Inventor 陈国庆董前年谷圣军周辉李凡朱双单
Owner 安徽天易金属新材料有限公司
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