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Water-based aluminum silver slurry and preparation method thereof, as well as application of water-based aluminum silver slurry in ink

An aluminum-silver paste, water-based technology, used in inks, applications, chemical instruments and methods, etc., can solve the problems that limit the wide application of water-based aluminum-silver paste and the high volatile organic compounds, and achieve good gas stability, good stability, The effect of broadening the application field

Inactive Publication Date: 2017-05-10
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

The content of volatile organic compounds (VOC) in the water-based aluminum-silver paste is relatively high, which limits the wide application of water-based aluminum-silver paste in fields with high requirements for VOC content indicators

Method used

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  • Water-based aluminum silver slurry and preparation method thereof, as well as application of water-based aluminum silver slurry in ink
  • Water-based aluminum silver slurry and preparation method thereof, as well as application of water-based aluminum silver slurry in ink
  • Water-based aluminum silver slurry and preparation method thereof, as well as application of water-based aluminum silver slurry in ink

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preparation example Construction

[0025] The invention provides a kind of preparation method of water-based aluminum-silver paste, comprising the following steps:

[0026] a) mixing the oily aluminum silver paste with an alcoholic solvent, and separating the solid and liquid after ultrasonic dispersion to obtain a solid mixture;

[0027] b) mixing the solid mixture, alcohol solvent, pH regulator, silane coupling agent and ethyl orthosilicate, aging after reaction, and separating solid and liquid to obtain coated aluminum-silver paste;

[0028] c) drying the coated aluminum-silver paste to obtain aluminum-silver powder;

[0029] d) The aluminum-silver powder is mixed with a solvent and then separated from solid and liquid to obtain a water-based aluminum-silver paste.

[0030] In the preparation method provided by the present invention, the oily aluminum-silver paste is first washed with an alcohol solvent, and the fatty acid in the oily aluminum-silver paste is washed away, so that it can be better dispersed ...

Embodiment 1

[0054] (1) Take 100kg of the oily filter cake prepared by the preparation method in the application number CN201210467860.7, add 250kg of n-propanol, heat up to 50°C, turn on the ultrasound for 30min, stir for 2h and then separate the solid and liquid to obtain the filter cake;

[0055] (2) Place the filter cake washed in step (1) in the reactor, add 450kg of n-propanol, adjust the pH value of the solution to 8 with ammonia water, add vinyltriethoxysilane and ethyl orthosilicate dropwise Mix the solution for 2 hours, age for 6 hours, and separate the solid and liquid to obtain the coated aluminum paste;

[0056] (3) Place the aluminum paste coated in step (2) in an oven at 100°C, and bake in vacuum for 4 hours;

[0057] (4) the aluminum powder that step (3) is dried is passed through a 500-mesh vibrating sieve;

[0058] (5) Place the aluminum powder sieved in step (4) in a dispersing cylinder that fully meets the requirements of environmental protection, add 5 times of n-prop...

Embodiment 2

[0068] (1) Take 100 kg of the oily filter cake prepared by the preparation method in the application number CN201210467860.7, add 280 kg of n-propanol, heat up to 55° C., turn on the ultrasound for 50 minutes, and separate the solid and liquid after stirring for 2 hours to obtain the filter cake;

[0069] (2) Place the filter cake washed in step (1) in the reactor, add 550kg of n-propanol, adjust the pH value of the solution to 8 with ammonia water, add vinyltriethoxysilane and ethyl orthosilicate dropwise Mix the solution for 3 hours, age for 5 hours, and separate the solid and liquid to obtain the coated aluminum paste;

[0070] (3) Place the aluminum paste coated in step (2) in an oven at 100°C, and bake in vacuum for 5 hours;

[0071] (4) the aluminum powder that step (3) is dried is passed through a 500-mesh vibrating sieve;

[0072] (5) Place the aluminum powder sieved in step (4) in a dispersing cylinder that fully meets the requirements of environmental protection, ad...

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Abstract

The invention provides water-based aluminum silver slurry and a preparation method thereof, as well as application of the water-based aluminum silver slurry in ink. The preparation method comprises the following steps: (a) mixing oil-based aluminum silver slurry with an alcohol solvent, and carrying out ultrasonic dispersion and solid-liquid separation in sequence to obtain a solid mixture; (b) mixing the solid mixture, the alcohol solvent, a pH value adjuster, a silane coupling agent and tetraethoxysilane, and carrying out reaction, then aging and solid-liquid separation to obtain aluminum-coated silver slurry; (c) drying the aluminum-coated silver slurry to obtain aluminum silver powder; (d) mixing the aluminum silver powder with a solvent, and carrying out solid-liquid separation to obtain the water-based aluminum silver slurry. According to the water-based aluminum silver slurry and the preparation method thereof, the oil-based aluminum silver slurry is washed with the alcohol solvent to wash off fatty acid in the oil-based aluminum silver slurry, so that the oil-based aluminum silver slurry can be better dispersed in the alcohol solvent, and wrapping of aluminum silver slurry is better realized; due to the combination of a drying and solvent mixing treatment method, the obtained water-based aluminum silver slurry is relatively low in volatile organic compound and can meet higher requirements; the application field of the water-based aluminum silver slurry is expanded, and the stability of the water-based aluminum silver slurry is high.

Description

technical field [0001] The invention relates to the technical field of aluminum-silver paste, in particular to a water-based aluminum-silver paste, its preparation method and its application in ink. Background technique [0002] Aluminum silver paste is a kind of aluminum metal pigment. Its production method is to mix spherical aluminum powder, solvent oil, oleic acid and ball milling medium steel balls, and then grade and sieve after ball milling for 6-30 hours. It is a paste metal pigment obtained after kneading. . Aluminum silver paste includes oily aluminum silver paste and water-based aluminum silver paste. Aluminum silver paste has become a widely used metal pigment because of its unique metallic luster effect, angle-dependent color effect, optical effect and suspension characteristics. [0003] As people pay more and more attention to environmental protection, water-based aluminum-silver pastes that can be applied to water-based systems have also received a lot of r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/64C09C3/04C09C3/12C09D11/03
CPCC09C1/64C09C3/003C09C3/006C09C3/04C09C3/12C09D11/03
Inventor 杨华荣夏风赵守元罗夔
Owner 长沙族兴新材料股份有限公司
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