Anti-corrosion aqueous paint and preparation method thereof

A water-based coating and modification technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of non-conversion, anti-flash corrosion performance, poor salt spray resistance, etc., to achieve easy damage, enhanced corrosion inhibition and rust resistance. , the effect of contact reduction

Inactive Publication Date: 2019-02-01
张芸
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a kind of anti-corrosion water-based coating and its preparation method in view of the poor flash corrosion resistance and salt spray resistance of the current coatings, and the problem that the surface rust cannot be transformed.

Method used

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  • Anti-corrosion aqueous paint and preparation method thereof

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preparation example Construction

[0029] A preparation method for anti-corrosion water-based paint, comprising the steps of:

[0030] S1. Take the anti-flash corrosion additive according to the mass ratio of 8~10:1~3:1~3, add OP-10 and sodium lauryl sulfate, raise the temperature to 55~60°C, and then add the anti-flash corrosion additive with a mass ratio of 8~15 times of deionized water, stirred and mixed at 5000r / min for 20~40min to obtain the mixture, in parts by mass, take 5~10 parts of the mixture, 5~8 parts of glyceryl methacrylate, 2~5 parts of methyl methacrylate ester, 2~4 parts of n-butyl acrylate, 1~3 parts of styrene, 8~10 parts of acrylic acid, stirred and mixed at 55~60°C for 1~3h to obtain the matrix;

[0031]S2. In parts by mass, take 3~5 parts of OP-10, 1~3 parts of sodium lauryl sulfate, 8~10 parts of sodium bicarbonate, 5~9 parts of rust-removing activator, 10~15 parts of modified Sexual active agent, 80~100 parts of deionized water, stirring and mixing at 55~65°C for 30~40min to obtain the...

Embodiment 1

[0033] Rust conversion active agent: (1) Take 1,2-propanediol and add itaconic acid at a mass ratio of 3:4, heat up to 70°C and stir for 20 minutes, then add p-toluenesulfonic acid with 3% itaconic acid mass, and heat at 70°C Insulate for 1 hour, then raise the temperature to 105°C, stir and mix for 2 hours, and cool to room temperature to obtain the rust-transforming active agent.

[0034] Anti-flash corrosion additive: Take β-hydroxyethyl methacrylate and add deionized water at a mass ratio of 2:8, add hydroquinone with 10% deionized water quality, stir and mix at 35°C for 30min, then add deionized water The mass of 10% phosphorus pentoxide was heated to 70°C and stirred for 2 hours to obtain a stirred mixture. The stirred mixture was added to deionized water at a mass ratio of 2:10, heated to 85°C and stirred for 1 hour, cooled to room temperature to obtain an anti-flash corrosion additives.

[0035] Modified active agent: take aniline and add p-phenylenediamine and OP-10 ...

Embodiment 2

[0040] Rust conversion active agent: (1) Take 1,2-propanediol and add itaconic acid at a mass ratio of 5:7, heat up to 73°C and mix for 25 minutes, then add p-toluenesulfonic acid with 4% itaconic acid mass, and heat at 73°C Insulate for 2 hours, then raise the temperature to 108°C, stir and mix for 3 hours, and cool to room temperature to obtain the rust-transforming active agent.

[0041] Anti-flash corrosion additive: Take β-hydroxyethyl methacrylate and add deionized water at a mass ratio of 3:9, add hydroquinone with 13% deionized water quality, stir and mix at 38°C for 40min, then add deionized water Phosphorus pentoxide with a mass of 18% was heated up to 73°C and stirred for 3 hours to obtain a stirred mixture. Take the stirred mixture and add deionized water at a mass ratio of 3:13, heat up to 88°C and stir for 2 hours, and cool to room temperature to obtain an anti-flash corrosion additives.

[0042] Modified active agent: take aniline and add p-phenylenediamine and...

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Abstract

The invention discloses an anti-corrosion aqueous paint and a preparation method thereof, which belong to a metal anti-corrosion paint. The method uses the itaconic acid as a raw material to obtain atransrust active agent, and the itaconic acid having a polyphenolic hydroxyl structure is used as a transrust reactant. The method takes phosphorus pentoxide and beta-hydroxyethyl acrylate having a bifunctional structure for a reaction to form corrosion-resistant phosphate and a passivation film, which has good adhesion, glossiness and unique anti-flashing function. The method adopts aniline and p-aniline as raw materials, so that the aqueous paint can prolong the anti-corrosion time of the coating film on the basis of anti-flashing of the formed film, so that the coating film can be long-lasting anticorrosive. In the present invention, methacrylic glyceride is added and an epoxy group is introduced, so that the density and water resistance of the coating film are improved. The method solves the problems that the current paint has poor flashing resistance and salt spray resistance, and a surface rust part cannot be transformed.

Description

technical field [0001] The invention belongs to a metal anticorrosion coating, in particular to an anticorrosion water-based coating and a preparation method thereof. Background technique [0002] Indoor decoration has become an important part of people's improvement of living conditions and quality of life. At the same time, the indoor pollution caused by decoration has attracted people's attention. With the extensive application of wood composite materials, coatings, and fabric furniture in interior decoration, the production and use of these materials will involve the release of volatile organic compounds (Volatile organic compounds, VOC). The determination of VOC in the indoor air of new buildings found that indoor terpenes, aldehydes, and ketones mainly come from wood composite materials and their products. The release of indoor VOCs will pose a potential threat to the health of occupants. Committed to providing healthy and environmentally friendly interior decoration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/02C09D5/08C08F220/06C08F220/32C08F220/14C08F220/18C08F212/08
CPCC08F220/06C09D5/08C09D133/02C08K13/06C08K5/1345C08K3/32C08F220/325C08F220/14C08F220/1804C08F212/08
Inventor 张芸路芸庞成荣
Owner 张芸
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