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Aluminum pigment and preparation method thereof

A technology of aluminum pigments and pastes, applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problems of hardening, storage and coking of UV coatings, and achieve good weather resistance and strong light transmission sexual effect

Active Publication Date: 2020-11-03
长沙族兴新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary aluminum pigments will generate free radicals in UV coatings, making it difficult to achieve stable storage of UV coatings, often causing undesirable phenomena such as coking and hardening; and aluminum flakes are easy to block the irradiation of ultraviolet light, which affects the curing efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Preparation of thick flake aluminum powder

[0056] Put 30 parts by weight of 9-11 aluminum powder with D50 of 11.52 μm, 65 parts by weight of H150, and 5 parts by weight of linoleic acid into a ball mill with steel balls as the ball milling medium for ball milling. The diameter of the steel balls is 3mm, and the ball milling speed is 45r / min, the ball milling time is 8H. The ball-milled mixture is filtered using a filter press to obtain a filter cake.

[0057] Then put 20 parts by weight of the filter cake obtained by pressure filtration in the above steps, 80 parts by weight of H150, 1 part by weight of Lubrizol 17000 and 2 parts by weight of titanate coupling agent KR-12 into a ball mill with glass balls as the ball milling medium Ball milling was carried out in the medium, the diameter of the glass ball was 0.5mm, the ball milling speed was 20r / min, and the ball milling time was 8H. Sieve through a 500-mesh vibrating sieve, then use a filter press to filter t...

Embodiment 2

[0065] (1) Preparation of thick flake aluminum powder

[0066] 30 parts by weight of 9-11 aluminum powder with a D50 of 11.52 μm, 90 parts by weight of H150, 3 parts by weight of linoleic acid, and 2 parts by weight of linolenic acid are put into a ball mill whose ball milling medium is a steel ball, and the diameter of the steel ball is 6mm, the ball milling speed is 45r / min, and the ball milling time is 4H. The ball-milled mixture is filtered using a filter press to obtain a filter cake.

[0067] Then put 20 parts by weight of the filter cake obtained by pressure filtration in the above steps, 120 parts by weight of H150, 1 part by weight of Lubrizol 5000 and 2 parts by weight of titanate coupling agent KR-9S into a ball mill with glass balls as the ball milling medium Ball milling was carried out in the medium, the diameter of the glass ball was 2mm, the ball milling speed was 20r / min, and the ball milling time was 4H. Sieve through a 500-mesh vibrating sieve, then use a ...

Embodiment 3

[0075] (1) Preparation of thick flake aluminum powder

[0076] 30 parts by weight of 9-11 aluminum powder with a D50 of 11.52 μm, 45 parts by weight of D40 solvent oil, and 5 parts by weight of linoleic acid are put into a ball mill with steel balls as the ball milling medium for ball milling. 50r / min, ball milling time is 6H. The ball-milled mixture is filtered using a filter press to obtain a filter cake.

[0077] Then put 20 parts by weight of filter cake, 80 parts by weight of D40 solvent oil, 1 part by weight of Lubrizol 17000 and 2 parts by weight of titanate coupling agent KR38S obtained by pressure filtration in the above steps into a ball mill with glass balls as the ball milling medium Ball milling was carried out in the medium, the diameter of the glass ball was 0.5mm, the ball milling speed was 20r / min, and the ball milling time was 8H. Sieve through a 500-mesh vibrating sieve, then use a filter press to filter to obtain a filter cake, and use a kneader to knead ...

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Abstract

The invention provides aluminum pigment with high weather resistance and light transmittance and a preparation method thereof. The aluminum pigment comprises, by weight, 55-65% of coated flaky aluminum powder and 35-45% of organic solvents, wherein the coated flaky aluminum powder comprises an aluminum sheet 0.5-0.8 micrometer in thickness, an affinity resin passivation layer covering the aluminumsheet, a silicon dioxide layer covering the affinity resin passivation layer, a titanium dioxide layer covering the silicon dioxide layer, and a phosphate functional layer covering the titanium dioxide layer.

Description

technical field [0001] The invention relates to an aluminum pigment and a preparation method thereof. Background technique [0002] Aluminum pigment is a widely used metal pigment, which is mainly used in coatings, inks, printing and dyeing, plastic products, papermaking, rubber products and ceramics. With the rapid development of downstream industries, the demand for pigments continues to expand. With the increasing environmental protection standards, the development of environmentally friendly coatings has become the only way for the development of coatings in the world, and UV coatings are a major trend in the development of coatings in the future. However, ordinary aluminum pigments will generate free radicals in UV coatings, making it difficult to achieve stable storage of UV coatings, often causing undesirable phenomena such as coking and hardening; and aluminum flakes are easy to block the irradiation of ultraviolet light, which affects the curing efficiency. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/64C09C3/06C09C3/08C09C3/10
CPCC09C1/646C09C3/006C09C3/08C09C3/10
Inventor 杨华荣夏风罗夔
Owner 长沙族兴新材料股份有限公司