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A protective coating with self-healing properties

A protective coating, self-healing technology, applied in the fields of fine chemicals and polymer materials, can solve the problems of high metal consumption, high energy consumption, corrosion, etc., and achieve the effect of delaying metal corrosion

Active Publication Date: 2021-06-01
INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inorganic method itself can form a dense film on the metal surface to prevent the corrosive medium from contacting the metal, and can also provide a sacrificial anode after the coating is damaged to continue to protect the metal from corrosion, but this method is often accompanied by high energy consumption and high Pollution, high metal consumption; coating anti-corrosion construction is simple and is the most commonly used, but once the film layer is damaged, the corrosive medium penetrates into the metal and then forms corrosion, resulting in anti-corrosion failure
[0003] The coupling agent can form a coating with high hardness and strong toughness on the metal surface, which has a good protective effect on the metal. However, with the occurrence of scratches, bumps and other damages, after the coating cracks, the corrosion starts from the cracks. loss of protection

Method used

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  • A protective coating with self-healing properties
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  • A protective coating with self-healing properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]The main component: 0.5 g of Poss monomer (R6) was mixed into a transparent solution from 2 g of seventest fluorohydrimethoxysilane, and then mixed with 5 gm5 in 92.5 g of tetrahydrofuran to mix dissolution.

[0037]Auxiliary component: 0.2 g of TEGO 410, 0.2 g tego Airex 944, 0.5 g of dibutylminikurate, 0.5 g of water was sequentially added in 98.6 g of tetrahydrofuran, stirred and dissolved into transparent.

[0038]Membrane solution formulation and construction method: After mixing the main component and the auxiliary component according to mass ratio 1: 0.1, it obtains a protective coating solution having repair characteristics.

[0039]The horseskou iron sheet was immersed in the protective coating solution described above, removed, and dried in an oven at 120 ° C for 30 min. The finished water contact angle is 120 °, floating dust, etc., it is possible to completely removal. The complete coating starts with obvious rust in 300 h in the salt clower test. After cross scratches, 30 ...

Embodiment 2

[0056]The primary component: 0.1 g of POSS monomer (R12) and 10 g m7 were sequentially added in 89.9 g of ethanol mixing.

[0057]Auxiliary component: 0.2 g of TEGO 410, 0.2 g tego Airex 944, 0.5 g of dibutylminikurate, 0.5 g of water was sequentially added in 98.6 g of tetrahydrofuran, stirred and dissolved into transparent.

[0058]Membrane solution formulation and construction method: After mixing the main component and the auxiliary component according to mass ratio 1: 0.1, it obtains a protective coating solution having repair characteristics.

[0059]The horseskou iron sheet was immersed in the protective coating solution described above, removed, and dried in an oven at 120 ° C for 30 min. The finished water contact angle 114 °, the floating dust is washed, and it can be completely removed. The intact coating starts with significant rust in the salt clower test, after scratching, at 120 ° C oven for 30 min, then placed in a salt spray, 40H salt fog test begins to have significant rust...

Embodiment 3

[0061]The main component: 0.5 g of Poss monomer (R1) was mixed into a transparent solution with 2 g of whole fluoromethyltrimethoxysilaptic silicon group, and then mixed into 92.5 g of tetrahydrofuran in 92.5 g of tetrahydrofuran with 5 g m1.

[0062]Auxiliary component: 0.2 g of TEGO 410, 0.2 g tego Airex 944, 0.5 g of dibutylminikurate, 0.5 g of water was sequentially added in 98.6 g of tetrahydrofuran, stirred and dissolved into transparent.

[0063]Membrane solution formulation and construction method: After mixing the main component and the auxiliary component according to mass ratio 1: 0.1, it obtains a protective coating solution having repair characteristics.

[0064]The horseskou iron sheet was immersed in the protective coating solution described above, removed, and dried in an oven at 120 ° C for 30 min. The finished water contact angle 118 °, floating dust and other water washes after washing. The complete coating starts with significant rust in the salt clower test. After cross ...

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Abstract

The invention discloses a protective coating with self-healing properties. The protective coating material with self-healing properties includes a main component and an auxiliary component, the mass ratio of the main component and the auxiliary component is 1:0.01 to 0.1, and the main component is expressed in mass fraction In total, it includes 0.1% to 1.0% of POSS monomer, 0% to 2% of monosilicon coupling agent, 1.0% to 10.0% of polysilicon coupling agent and 98.9% to 89.0% of solvent A. The protective coating with self-repairing properties proposed by the present invention uses POSS structural monomers as anti-corrosion materials with self-repairing properties, which not only endows the film with hydrophobic and self-cleaning properties, but also can significantly delay metal corrosion when the anti-corrosion film is lost.

Description

Technical field:[0001]The present invention relates to the field of high molecular material technology and fine chemical technology, in particular, relating to a protective coating having self-repair characteristics.Background technique:[0002]Common metal anti-corrosion treatment methods are divided into two types of inorganic methods and organic methods, inorganic, including Daclo, zinc aluminum coating, phosphating, etc., organic common as paint anti-corrosion. The inorganic method itself can form a membrane layer on the metal surface, preventing the corrosion medium from contacting with metal, and can also provide sacrificial anode after the coating is destroyed, continue to protect the metal from corrosion, but this method is often accompanied by high energy consumption, high Pollution, high metal consumption; the coating is simple, most common, but once the film layer is destroyed, the corrosion medium penetrates to the metal, then form corrosion, resulting in anti-corrosion fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/08C09D5/08C08G77/28C08G77/24C08G77/06C08G77/26
CPCC08G77/045C09D5/08C09D183/08
Inventor 刘海峰王柱哈成勇孙成军
Owner INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI