Environment-friendly water-based aluminum-rich coating with long-term storage stability

A storage stability and coating technology, applied in the field of environmentally friendly water-based aluminum-rich coatings, can solve problems such as poor dispersion of aluminum powder, increase the amount of aluminum powder added in water-based aluminum-rich anti-corrosion coatings, etc., to achieve enhanced anti-corrosion performance, excellent storage stability, The effect of excellent corrosion resistance

Pending Publication Date: 2022-07-01
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of poor dispersion of aluminum powder and hydrogen evolution, and greatly increases the amount of aluminum powder added in water-based aluminum-rich anti-corrosion coatings, making the coatings have excellent anti-corrosion performance and stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the present embodiment, the preparation method of environmental protection water-based aluminum-rich paint is as follows:

[0029] 1. Using 200g spherical aluminum powder as raw material, stir and wash with 10% NaOH solution (1000ml) for 30min, then wash with absolute ethanol for 2~3 times, then wash with deionized water for 3 times and absolute ethanol for 1 time After being filtered and dried (30°C, 10h), the aluminum powder after surface treatment was obtained.

[0030] 2. Add 100g of aluminum powder after surface treatment to 500ml of ethylene glycol monobutyl ether, fully stir at room temperature for 20min, stirring speed 800r / min, then heat up to 40℃, add 100g silane, continue stirring for 20min, stirring speed 800 r / min, then add 100 g of deionized water dropwise under stirring conditions, and adjust the pH between 7 and 8 with acetic acid and triethanolamine, then react at 40 ° C for 8 h, and finally filter the product and wash with absolute ethanol. 2~3 tim...

Embodiment 2

[0034] 1. Using 200g spherical aluminum powder as raw material, stir and wash with 10% NaOH solution (1000ml) for 30min, then wash with absolute ethanol for 2~3 times, then wash with deionized water for 3 times and absolute ethanol for 1 time After being filtered and dried (30°C, 10h), the aluminum powder after surface treatment was obtained.

[0035]2. Add 100g of aluminum powder after surface treatment to 500ml of ethylene glycol monobutyl ether, stir at room temperature for 20min, stirring speed is 800r / min, then heat up to 40℃, add 100g silane, continue stirring for 20min, stirring speed 800 r / min, then add 100 g of deionized water dropwise under stirring conditions, and adjust the pH between 7 and 8 with acetic acid and triethanolamine, then react at 40 ° C for 8 h, and finally filter the product and wash with absolute ethanol. 2~3 times, drying at 30°C for 10h to obtain surface-modified aluminum powder.

[0036] 3. Disperse 8g of water-based resin in 11.2g of water, 8.9...

Embodiment 3

[0039] 1. Using 200g spherical aluminum powder as raw material, stir and wash with 10% NaOH solution (1000ml) for 30min, then wash with absolute ethanol for 2~3 times, then wash with deionized water for 3 times and absolute ethanol for 1 time After being filtered and dried (30°C, 10h), the aluminum powder after surface treatment was obtained.

[0040] 2. Add 100g of aluminum powder after surface treatment to 500ml of ethylene glycol monobutyl ether, stir at room temperature for 20min, stirring speed is 800r / min, then heat up to 40℃, add 100g silane, continue stirring for 20min, stirring speed 800 r / min, then add 100 g of deionized water dropwise under stirring conditions, and adjust the pH between 7 and 8 with acetic acid and triethanolamine, then react at 40 ° C for 8 h, and finally filter the product and wash with absolute ethanol. 2~3 times, drying at 30°C for 10h to obtain surface-modified aluminum powder.

[0041] 3. Disperse 8g of water-based resin in 7.3g of water, 5.8...

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Abstract

An environment-friendly water-based aluminum-rich coating with long-term storage stability relates to an anticorrosive coating and comprises the following components in parts by weight: 2-15 parts of modified flaky aluminum powder, 10-65 parts of modified spherical aluminum powder, 3-20 parts of water-based resin, 0.01-1 part of an emulsifier, 5-10 parts of a dispersant, 5-20 parts of a cosolvent, 0.1-3 parts of a leveling agent, 0.1-3 parts of a wetting agent, 0.1-2 parts of an anti-settling agent, 0.01-1 part of a defoaming agent, 0.01-1 part of a thickening agent and 10-50 parts of deionized water. The use amount of toxic organic solvents is effectively reduced, and resource waste and environmental pollution are avoided. Meanwhile, silane is used as a precursor, and modified aluminum powder is prepared by adopting a sol-gel method. The problems of poor dispersibility of aluminum powder and barrel swelling due to hydrogen evolution are solved, on one hand, the adding amount of the aluminum powder in the water-based aluminum-rich coating is increased, and the corrosion resistance of the water-based aluminum-rich coating is enhanced; on the other hand, the storage stability of the water-based aluminum-rich anticorrosive paint is greatly enhanced, and the storage time is prolonged.

Description

technical field [0001] The invention relates to the field of environment-friendly functional coatings, in particular to an environment-friendly water-based aluminum-rich paint with long-term storage stability. Background technique [0002] Aluminum coatings are widely used in electric power, transportation, construction, petrochemical and other industries because of their excellent anti-corrosion properties. Traditional aluminum coatings are often prepared with organic substances (benzenes, alcohol ethers, esters, etc.) as the solvent and organic resins as the main film-forming material, which not only causes serious pollution to the environment, but also has fatal hazards to the human body. With the continuous improvement of environmental protection requirements and the increasing awareness of the impact of coatings, countries have incorporated the control of VOCs into laws and regulations. Therefore, reducing the emission of VOCs in coatings is gradually becoming the main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D133/00C09D175/04C09D127/12C09D183/04C09D5/10C09D7/20
CPCC09D163/00C09D133/00C09D175/04C09D127/12C09D183/04C09D5/103C09D7/20C08K9/02C08K7/18C08K7/00C08K9/06
Inventor 李庆鹏蒋天成秦野王娜
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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