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Preparation method for aluminium paste pigment

A technology of aluminum silver paste and pigment, applied in pigment paste, inorganic pigment treatment, chemical instruments and methods, etc., can solve the problems of poor acid and alkali resistance of aluminum silver paste, achieve good coating effect, simple operation, improved resistance The effect of acidity and alkalinity

Inactive Publication Date: 2019-11-01
山东盈科新型材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem of poor acid and alkali resistance of aluminum-silver paste in the prior art, the present invention provides a method for preparing aluminum-silver paste pigments, coating the surface of aluminum flakes with SiO 2 , SiO 2 It can react with the hydroxyl group on the surface of the aluminum sheet, prevent the aluminum sheet from being directly exposed to the air, and reduce the phenomenon that the aluminum sheet will lose its metallic luster after reacting with oxygen and moisture to produce oxides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of aluminum silver paste pigment, comprising the following steps:

[0036] 1. Preparation of aluminum flakes:

[0037] (1) Add the spherical aluminum powder and kerosene, palmitic acid and stearic acid into the ball mill according to the weight ratio of 50:25:1:1 for ball milling, and the ball milling time is 9 hours;

[0038] (2) The ball milling product is sent to a sieving machine for screening, and the aluminum flakes that meet the particle size requirements and the aluminum flakes that have not been ball milled are obtained by screening, and the aluminum flakes that have not been ball milled are sent back to the ball mill for ball milling;

[0039] (3) Collect the flat aluminum flakes with a diameter-thickness ratio of 1:16-1:20 and send them to a filter press for pressure filtration to separate the liquid attached to the aluminum flakes from the aluminum flakes.

[0040] 2. SiO2 2 Sol preparation:

[0041] (4) Mix and stir absolute ethanol ...

Embodiment 2

[0050] A preparation method of aluminum silver paste pigment, comprising the following steps:

[0051] 1. Preparation of aluminum flakes:

[0052] (1) Add the spherical aluminum powder and kerosene, palmitic acid and stearic acid into the ball mill according to the weight ratio of 50:25:1:1 for ball milling, and the ball milling time is 10h;

[0053] (2) The ball milling product is sent to a sieving machine for screening, and the aluminum flakes that meet the particle size requirements and the aluminum flakes that have not been ball milled are obtained by screening, and the aluminum flakes that have not been ball milled are sent back to the ball mill for ball milling;

[0054] (3) Collect the flat aluminum flakes with a diameter-thickness ratio of 1:16-1:20 and send them to a filter press for pressure filtration to separate the liquid attached to the aluminum flakes from the aluminum flakes.

[0055] 2. SiO2 2 Sol preparation:

[0056] (4) Mix and stir absolute ethanol and ...

Embodiment 3

[0065] A preparation method of aluminum silver paste pigment, comprising the following steps:

[0066] 1. Preparation of aluminum flakes:

[0067] (1) Add the spherical aluminum powder and kerosene, palmitic acid and stearic acid into the ball mill according to the weight ratio of 50:25:1:1 for ball milling, and the ball milling time is 12h;

[0068] (2) The ball milling product is sent to a sieving machine for screening, and the aluminum flakes that meet the particle size requirements and the aluminum flakes that have not been ball milled are obtained by screening, and the aluminum flakes that have not been ball milled are sent back to the ball mill for ball milling;

[0069] (3) Collect the flat aluminum flakes with a diameter-thickness ratio of 1:16-1:20 and send them to a filter press for pressure filtration to separate the liquid attached to the aluminum flakes from the aluminum flakes.

[0070] 2. SiO2 2 Sol preparation:

[0071] (4) Mix and stir absolute ethanol and ...

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PUM

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Abstract

The invention relates to the technical field of metal pigments, specifically to a preparation method for an aluminum paste pigment. The preparation method comprises the following steps: 1, preparationof an aluminum sheet; 2, preparation of a SiO2 sol; 3, preparation of a SiO2 coated aluminum sheet; and 4, preparation of a pigment. According to the invention, the surface of the aluminum sheet is coated with SiO2, and SiO2 can react with a hydroxyl group on the surface of the aluminum sheet to prevent the aluminum sheet from being directly exposed to the air, so the phenomenon of loss of metallic luster due to oxide production caused by a reaction of the aluminum sheet with oxygen and moisture is reduced.

Description

technical field [0001] The invention relates to the technical field of metal pigments, in particular to a method for preparing aluminum-silver paste pigments. Background technique [0002] Aluminum silver paste is a kind of pigment with silver-white metallic luster, and it is one of the most widely used metallic effect pigments. The main component of aluminum silver paste is flat aluminum sheet that has undergone special processing and surface treatment, and also includes solvents and additives. [0003] At this stage, the bottleneck affecting the further development and application of aluminum-silver paste is that the aluminum-silver paste has poor acid and alkali resistance. When used as a surface coating, it is easily corroded, the coating has poor stability, and the metallic luster will also be significantly reduced. Contents of the invention [0004] Aiming at the technical problem of poor acid and alkali resistance of aluminum-silver paste in the prior art, the pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/64C09C3/06C09D17/00
CPCC01P2006/60C09C1/642C09C3/063C09D17/006
Inventor 刘致才刘建伟
Owner 山东盈科新型材料科技有限公司