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Rust conversion water-based metal primer and preparation method thereof

A rust water, metal technology, applied in the field of rust-to-rust water-based metal primer and its preparation, can solve problems such as carcinogenicity and adverse human health, and achieve the effects of delaying corrosion, excellent moisture and heat resistance, and increasing contact area.

Inactive Publication Date: 2021-07-16
SHANGHAI CARPOLY PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the added substance sodium nitrite is carcinogenic and is not conducive to human health.

Method used

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  • Rust conversion water-based metal primer and preparation method thereof
  • Rust conversion water-based metal primer and preparation method thereof
  • Rust conversion water-based metal primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A water-based metal primer for turning rust with rust comprises the following components in mass fraction:

[0035]

[0036] The preparation method of described band rust turning rust water-based metal primer, comprises the steps:

[0037] S1. In a high-speed disperser, according to the above mass fraction, dissolve tannic acid in a part of deionized water (accounting for about 1 / 2 of the total mass of deionized water), and disperse at 40-45°C for 20 minutes to a transparent state. form a mixture;

[0038] S2. In a high-speed disperser, according to the above mass fraction, dissolve polyvinylidene chloride-acrylic acid copolymer, corrosion inhibitor, wetting agent, and defoamer in deionized water of the remaining mass and disperse for 20 minutes, and then add the Mixed solution, disperse for 15 minutes;

[0039] S3. According to the above mass fraction, add tourmaline powder to the product obtained in step S2, and continue to disperse for 30 minutes to obtain the f...

Embodiment 2

[0041] A water-based metal primer for turning rust with rust comprises the following components in mass fraction:

[0042]

[0043] The preparation method of described band rust turning rust water-based metal primer, comprises the steps:

[0044] S1. In a high-speed disperser, according to the above mass fraction, dissolve tannic acid in a part of deionized water (accounting for about 1 / 2 of the total mass of deionized water), and disperse at 40-45°C for 20 minutes to a transparent state. form a mixture;

[0045] S2. In a high-speed disperser, according to the above mass fraction, dissolve polyvinylidene chloride-acrylic acid copolymer, corrosion inhibitor, wetting agent, and defoamer in deionized water of the remaining mass and disperse for 20 minutes, and then add the Mixed solution, disperse for 15 minutes;

[0046] S3. According to the above mass fraction, add tourmaline powder to the product obtained in step S2, and continue to disperse for 30 minutes to obtain the fin...

Embodiment 3

[0048] A water-based metal primer for turning rust with rust comprises the following components in mass fraction:

[0049]

[0050] The preparation method of described band rust turning rust water-based metal primer, comprises the steps:

[0051] S1. In a high-speed disperser, according to the above mass fraction, dissolve tannic acid in a part of deionized water (accounting for about 1 / 2 of the total mass of deionized water), and disperse at 40-45°C for 20 minutes to a transparent state. form a mixture;

[0052] S2. In a high-speed disperser, according to the above mass fraction, dissolve polyvinylidene chloride-acrylic acid copolymer, corrosion inhibitor, wetting agent, and defoamer in deionized water of the remaining mass and disperse for 20 minutes, and then add the Mixed solution, disperse for 15 minutes;

[0053] S3. According to the above mass fraction, add tourmaline powder to the product obtained in step S2, and continue to disperse for 30 minutes to obtain the f...

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Abstract

The invention relates to a rust conversion water-based metal primer. The rust conversion water-based metal primer comprises a polyvinylidene chloride-acrylic acid copolymer, tannic acid and a corrosion inhibitor, wherein the corrosion inhibitor is at least one selected from phosphonohydroxyacetic acid and ethylene diamine tetra (methylene phosphonic acid). The rust conversion water-based metal primer product disclosed by the invention does not contain alkylphenol polyoxyethylene ether, is low in VOC (Volatile Organic Compounds) and is environment-friendly. Through the synergistic effect of the polyvinylidene chloride-acrylic acid copolymer, a rust conversion auxiliary agent and the corrosion inhibitor, corrosion of metal is delayed, the heat and humidity resistance is excellent, the contact area between the primer and the metal surface can be effectively increased, and the adhesive capacity of the primer is enhanced. A rust layer on the metal surface treated by the rust conversion water-based metal primer can be directly coated under the condition of rust without being subjected to rust removal treatment.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a water-based metal primer with rust turned rust and a preparation method thereof. Background technique [0002] According to statistics, the annual loss of metal due to corrosion in the world is more than 20% of the annual output of metal, and the resulting economic loss is about 1 trillion US dollars. The annual economic losses caused by corrosion in our country account for about 4% of the gross national product, exceeding the sum of the losses caused by fire, wind disasters and earthquakes. At least 20 billion yuan. The loss caused by metal corrosion is so serious, especially the anti-corrosion of steel has attracted people's attention day by day. One of the most effective and commonly used methods to prevent metal corrosion is to apply an anti-corrosion coating on the metal surface. At present, the coatings used on steel structure products mainly use organic solvent-based coatings. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/08C09D5/08C09D7/61C09D7/63
CPCC09D5/08C09D127/08C09D7/61C09D7/63C08K13/02C08K3/38C08K5/1545C08K5/5317
Inventor 王晓强谢昊杰郑振杰
Owner SHANGHAI CARPOLY PAINT
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