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Organopolysiloxane rubber coating for protective coating layer

A polysiloxane and rubber protection technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of difficult maintenance, short service life, high maintenance cost, etc., achieve excellent anti-corrosion performance, excellent coating adhesion, and reduce VOC The effect of emissions

Pending Publication Date: 2020-08-14
无锡米克新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the anti-corrosion coatings on the market are difficult to maintain, have high maintenance costs, and have a short service life.

Method used

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  • Organopolysiloxane rubber coating for protective coating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An organopolysiloxane rubber protective coating, the preparation method of which is: low-viscosity siloxane prepolymer: 100 parts, rutile titanium dioxide: 5 parts, hydrophobically modified fumed silica: 3 parts, precipitation white Carbon black: 5 parts, anti-rust powder: 10 parts, wollastonite: 20 parts, after grinding and dispersing evenly, add carbon black slurry: 1 part, tetraethyl silicate: 8 parts, silicone oil: 1 part, adhesion promotion Agent: 5 parts, catalyst: 0.2 parts, and then dispersed at a high speed for 30 minutes to obtain an organopolysiloxane rubber protective coating.

[0032] The antirust powder adopts zinc powder.

[0033] The color paste is obtained by mixing pigment and hydroxysilane at a ratio of 2:1, the fineness is less than 50 μm, and the pigment is iron red.

[0034] The silicone oil is prepared by mixing methyl silicone oil and hydroxyl silicone oil at a ratio of 1:1, and the viscosity is 50MPa·s.

[0035] The adhesion promoter is a tack...

Embodiment 2

[0039] An organopolysiloxane rubber protective coating, the preparation method of which is: low-viscosity siloxane prepolymer: 100 parts, rutile titanium dioxide: 12 parts, hydrophobically modified fumed silica: 4 parts, precipitation white Carbon black: 8 parts, antirust powder: 20 parts, wollastonite: 40 parts, iron red paste: 5 parts, tetraethyl orthosilicate: 12 parts, silicone oil: 3 parts, adhesion promoter: 10 parts, catalyst : 1 serving.

[0040] The antirust powder adopts aluminum tripolyphosphate.

[0041] The color paste is obtained by mixing pigment and hydroxysilane in a ratio of 2:1, the fineness is less than 50 μm, and the pigment is carbon black.

[0042] The silicone oil is prepared by mixing methyl silicone oil and hydroxyl silicone oil at a ratio of 1:1, and the viscosity is 50-100MPa·s.

[0043] The adhesion promoter is epoxy silane.

[0044] The catalyst is an organic titanium complex, CAS: 68784-48-5, and the model is SG-T-703.

[0045] The prepared o...

Embodiment 3

[0047] An organopolysiloxane rubber protective coating, the preparation method of which is: low-viscosity siloxane prepolymer: 100 parts, rutile titanium dioxide: 20 parts, hydrophobically modified fumed silica: 5 parts, precipitation white Carbon black: 10 parts, anti-rust powder: 30 parts, wollastonite: 50 parts, iron yellow paste: 10 parts, tetraethyl orthosilicate: 15 parts, silicone oil: 6 parts, adhesion promoter: 15 parts, catalyst : 2 servings.

[0048] The antirust powder adopts zinc phosphate.

[0049] The wollastonite is a flake material with a fineness of 3000 mesh.

[0050] The color paste is obtained by mixing pigment and hydroxysilane in a ratio of 2:1, the fineness is less than 50 μm, and the pigment is iron yellow.

[0051]The silicone oil is prepared by mixing methyl silicone oil and hydroxyl silicone oil at a ratio of 1:1, and the viscosity is 50-100MPa·s.

[0052] The adhesion promoter is aminopropylsilane.

[0053] The catalyst is an organic titanium c...

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Abstract

The invention belongs to the field of organosilicon rubber coating, relates to the field of metal protective organosilicon rubber coating, and particularly relates to organopolysiloxane coating for aprotective coating layer. The coating comprises, by mass, 100 parts of a low-viscosity siloxane prepolymer, 5-20 parts of rutile titanium dioxide, 3-5 parts of hydrophobic modified fumed silica, 5-10parts of precipitated white carbon black, 10-30 parts of antirust powder, 20-50 parts of wollastonite, 1-10 parts of color paste, 8-15 parts of tetraethoxysilane, 1-6 parts of silicone oil, 5-15 partsof an adhesion promoter and 0.2-2 parts of catalyst. The invention also provides a preparation method. By introducing the organopolysiloxane rubber, the elasticity of the coating layer is fully guaranteed, the cracking phenomenon of the coating layer due to ultraviolet rays and high and low temperature effects in use is avoided, and the coating has higher corrosion resistance, is environment-friendly and pollution-free, and has longer service lifetime.

Description

technical field [0001] The invention belongs to the field of silicone rubber coatings, relates to the field of metal protective silicone rubber coatings, in particular to an organopolysiloxane protective coating. Background technique [0002] For metal materials, it needs to be protected against corrosion after processing and forming. The usual protection method is to paint, but within a few years after painting, the coating will be damaged due to ultraviolet rays, acid and alkali corrosion environment, temperature, etc. Poor, mechanical stress and other external forces cause the coating to gradually fail and lose its protective effect on metal materials. However, if the coating fails to be repaired in time, the metal material will be further corroded, and eventually the metal material will lose its original main structure function, resulting in safety accidents such as the collapse of the building. Therefore, the anti-corrosion maintenance of metal structural materials is ...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D7/61C09D5/08C09D5/10C09D7/62
CPCC09D183/04C09D7/61C09D5/08C09D7/62C09D5/106C08L2205/025C08L2205/03C08K2003/2241C08K2003/0893C08K2003/327C08K2003/328C08L83/04C08K13/06C08K9/06C08K3/36C08K3/22C08K3/34C08K3/08C08K3/32
Inventor 黄兴红李建苹
Owner 无锡米克新材料有限公司
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