Nano-organic-silica anti-corrosion coating

A nano-organosilicon and anti-corrosion coating technology, applied in the field of nano-materials, can solve the problems of poor wear resistance, poor high temperature anti-corrosion effect, discoloration, etc., to improve friction resistance and corrosion resistance, improve mechanical strength and adhesion. The effect of improving the force and interface adhesion

Inactive Publication Date: 2019-03-08
合肥晓拂新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of siloxane-modified acrylic resin as the base material, it is prone to yellowing at high temperatures and can only be made into silver black. At the same time, the coating is anti-corrosion by adding up to 35% aluminum powder to achieve high-temperature melting and secondary film formation. Because a large amount of aluminum powder will soften and melt at high temperature, the coating has no thermal hardness, and the wear resistance is extremely poor at high temperature. At the same time, special ultrasonic vibration is used for coating. Compared with the conventional process, it is extremely inconvenient for customers to use.
And the paint also uses some toxic trimethylbenzene as solvent, which is not environmentally friendly
CN100587017C discloses a solvent-based organosilicon ultra-high-temperature resistant coating and its production method, which can withstand high temperatures of 450-500 degrees, but the pyrolysis of organic resins will still produce some pungent and toxic odors, and will change color
Can only do very few colors of black and silver black, can not do light and bright colors
The above organic or inorganic high-temperature-resistant coatings have poor high-temperature and anti-corrosion effects and poor wear-resisting effects when thinly applied.

Method used

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  • Nano-organic-silica anti-corrosion coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of the modified nano zinc oxide-graphene oxide composite powder comprises the following steps:

[0024] 1) Dissolve sodium lauryl sulfate in hot water at 70°C for stirring and dispersing, then add nano-zinc oxide for stirring and dispersing, ultrasonically treat for 1.5h, and then filter and dry to obtain modified nano-zinc oxide powder ;

[0025] 2) Add the modified nano-zinc oxide powder and graphene oxide into 2wt% itaconic acid solution, stir and disperse for 3 hours, then heat up to 60°C, add aminopropyltriethoxysilane, and react 2 hours, filter and dry the filtrate. The mass ratio of sodium lauryl sulfate to nano-zinc oxide is 7:1, the mass ratio of nano-zinc oxide to graphene oxide is 2:1, and the mass ratio of nano-zinc oxide to aminopropyltriethoxysilane The ratio is 15:1.

[0026] The modification effect was measured by sedimentation experiments. Weighed 1-1.5g of the above-mentioned modified nano-zinc oxide-graphene oxide composite p...

Embodiment 2

[0029] The preparation method of the modified nano zinc oxide-graphene oxide composite powder comprises the following steps:

[0030] 1) Dissolve sodium lauryl sulfate in hot water at 80°C for stirring and dispersing, then add nano-zinc oxide for stirring and dispersing, ultrasonically treat for 0.5h, and then filter and dry to obtain modified nano-zinc oxide powder ;

[0031] 2) Add the modified nano-zinc oxide powder and graphene oxide into 5wt% itaconic acid solution, stir and disperse for 1 hour, then raise the temperature to 50°C, and then add methacryloxypropyltrimethoxy Silane, react for 4 hours, filter and dry the filtrate. The mass ratio of sodium lauryl sulfate to nano-zinc oxide is 5:1, the mass ratio of nano-zinc oxide to graphene oxide is 3:1, and the mass ratio of nano-zinc oxide to methacryloxypropyltrimethoxy The mass ratio of silane is 25:1.

[0032] It can be seen from the test that the unmodified nano-zinc oxide-graphene oxide will completely settle down ...

Embodiment 3

[0034] A kind of nano organosilicon anticorrosion coating, according to parts by weight, comprises the following components:

[0035] 43 parts of water-soluble epoxy resin, 24 parts of alkyd resin, 9 parts of modified nano-zinc oxide-graphene oxide composite powder in Example 1, 13 parts of nano-silica, 7 parts of diatom mud, hydroxymethyl fiber 6 parts of elemental, 15 parts of tetraethoxysilane, 12 parts of zinc phosphate, 4 parts of alcohol ester twelve parts, 0.3 part of sodium oleate, 0.9 part of isopropanol, 0.3 part of emulsified methyl silicone oil and 40 parts of water.

[0036] 35-50 parts of water-soluble epoxy resin, 35-45 parts of alkyd resin, 6-12 parts of modified nano-zinc oxide-graphene oxide composite powder, 10-16 parts of nano-silica, 5-10 parts of diatom mud 4-8 parts of hydroxymethyl cellulose, 12-18 parts of tetraethoxysilane, 10-16 parts of zinc phosphate, 2-6 parts of coalescent, 0.1-0.5 parts of dispersant, 2-2 parts of isopropanol 6 parts, 0.1-0.5 p...

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Abstract

The invention provides a nano-organic-silica anti-corrosion coating which comprises, by weight, 35-50 parts of water-soluble epoxy resin, 35-45 parts of alkyd resin, 6-12 parts of modified nano-zinc oxide and graphene oxide composite powder, 10-16 parts of nano-silica, 5-10 parts of diatom ooze, 4-8 parts of hydroxymethyl cellulose, 12-18 parts of tetraethoxysilane, 10-16 parts of zinc phosphate,2-6 parts of coalescing agents, 0.1-0.5 part of dispersing agents, 2-6 parts of isopropanol, 0.1-0.5 part of defoaming agents and 35-45 parts of water. The modified nano-zinc oxide and graphene oxidecomposite powder is mainly prepared from nano-zinc oxide, sodium dodecyl sulfate, graphene oxide, itaconic acid and silane coupling agents. The nano-organic-silica anti-corrosion coating is good in anti-corrosion performance and has excellent wear resistance.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a nanometer organic silicon anticorrosion coating. Background technique [0002] Anti-corrosion coatings have become an important new force in the field of coatings. Anti-corrosion coatings are playing an increasingly important role, and their development prospects are promising. According to the analysis of industry experts: the price of anti-corrosion coatings is rising obviously, which is related to marine coatings and marine development. In recent years, the country has been increasing investment in seven-tenths of the earth's oceans, among which anti-corrosion coatings are a prominent point in this area. Since 2007, anti-corrosion coatings have played an increasingly important role in the construction of the national economy. The market for anti-corrosion coatings for articles has shown a gratifying situation, and its production scale has continued t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D167/08C09D5/08C09D7/61
CPCC09D163/00C08K2003/2296C08K2003/328C08K2201/011C09D5/08C09D7/61C08L67/08C08K9/06C08K9/04C08K3/22C08K3/042C08K3/36C08K7/26C08K3/32
Inventor 李致
Owner 合肥晓拂新能源有限公司
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