Superhydrophilic anticorrosion coating sol and preparation method and application thereof

An anti-corrosion coating and super-hydrophilic technology, applied in the direction of anti-corrosion coatings, coatings, fire-resistant coatings, etc., to achieve the effects of promoting application and development, simple preparation process, and high mechanical strength

Inactive Publication Date: 2018-08-24

泉州三欣新材料科技有限公司

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AI-Extracted Technical Summary

Problems solved by technology

However, from the existing patents and li...

Method used

As can be seen from Table 2, coating provided by the invention has superhydrophilicity, and superhydrophilicity can keep for a long time, after 6 months, still has good hydrophilicity; The present invention The provided coatings have good corrosion resistance, and the coatings in Examples 1-6 can achieve salt...

Abstract

The invention discloses superhydrophilic anticorrosion coating sol, made by combining inorganic polysilazane and graphene, and a preparation method and application thereof. Graphene and inorganic polysilazane are combined to obtain coating sol having self-curing property and strong adhesion; and a coating prepared has good corrosion resistance and stable superhydrophilicity, as well as the characteristics, such as heat conductivity, high mechanical strength, and flame retardancy. The preparation method is simple, low in cost and green, the operating conditions are easy to control, the problemsare effectively solved that existing coatings have poor corrosion resistance and the preparation techniques are complex, and the application and development of superhydrophilic anticorrosion technology are benefited.

Application Domain

Fireproof paintsAntifouling/underwater paints +2

Technology Topic

CorrosionHydrophilic coating +6

Image

Examples

Experimental program(6)
Comparison scheme(2)
Effect test(1)

Example Embodiment

[0042] Example 1

[0043] (1) Preparation of graphene solution

[0044] Mix 10g graphene material (graphene, size 100~1000nm, layer number 1~5), 0.01g hexamethyldisilazane, and 1000g solvent, and disperse uniformly under ultrasonic conditions to obtain a graphene solution;

[0045] (2) Preparation of super hydrophilic anticorrosive coating sol

[0046] The graphene solution obtained in step (1) was mixed with 1000 g of inorganic polysilazane solution with a solid content of 5% and a solvent, and the mixture was sealed and stirred at 35°C for 10 hours, and sealed and stored to obtain a super hydrophilic with a solid content of 1.5%. Anti-corrosion coating sol. The inorganic polysilazane solution used contains inorganic polysilazane, solvent and catalyst 4,4'-trimethylene bis(1-methylpiperidine), wherein the mass ratio of inorganic polysilazane to catalyst is 10 :0.01.

[0047] The super-hydrophilic anti-corrosion coating sol is coated on the substrate and cured at 100°C for 1 hour to obtain the super-hydrophilic anti-corrosion coating. The thickness of the super-hydrophilic anticorrosive coating is 500 μm.

Example Embodiment

[0048] Example 2

[0049] (1) Preparation of graphene solution

[0050] Mix 10g graphene material (graphene, size 0.1-50nm, layer number 1-100), 1g hexamethyldisilazane, 5000g solvent, and disperse uniformly under ultrasonic conditions to obtain a graphene solution;

[0051] (2) Preparation of super hydrophilic anticorrosive coating sol

[0052] Mix the graphene solution obtained in step (1) with 10000g of an inorganic polysilazane solution with a solid content of 10% and a solvent, seal and stir at 15°C for 30h, and store in a sealed manner to obtain a superhydrophilic solid content of 5% Anti-corrosion coating sol. The inorganic polysilazane solution used contains inorganic polysilazane, n-butyl ether, xylene and catalyst 4,4'-trimethylene bis(1-methylpiperidine), of which inorganic polysilazane and catalyst The mass ratio is 10:0.05.

[0053] The super-hydrophilic anti-corrosion coating sol is coated on the substrate and cured at 30°C for 24 hours to obtain the super-hydrophilic anti-corrosion coating. The thickness of the super-hydrophilic anticorrosive coating is 1000 μm.

Example Embodiment

[0054] Example 3

[0055] (1) Preparation of graphene solution

[0056] Mix 10g graphene material (graphene, size 500~50,000nm, number of layers 1~9), 0.5g hexamethyldisiloxane, and 10000g solvent, and disperse uniformly under ultrasonic conditions to obtain a graphene solution;

[0057] (2) Preparation of super hydrophilic anticorrosive coating sol

[0058] Mix the graphene solution obtained in step (1) with 10000g of an inorganic polysilazane solution with a solid content of 2% and a solvent, seal and stir for 30h at 15°C, and store in a sealed manner to obtain a superhydrophilic solid content of 1% Anti-corrosion coating sol. The inorganic polysilazane solution used contains inorganic polysilazane, solvent and catalyst 1-methylpiperidine, wherein the mass ratio of inorganic polysilazane to catalyst is 10:0.001.

[0059] The super-hydrophilic anti-corrosion coating sol is coated on the substrate and cured at 120° C. for 14 hours to obtain the super-hydrophilic anti-corrosion coating. The thickness of the super hydrophilic anticorrosive coating is 900 μm.

PUM

Property	Measurement	Unit
Thickness	500.0	µm
Thickness	1000.0	µm
Thickness	900.0	µm

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

High mechanical strength
Simple preparation process

Superhydrophilic anticorrosion coating sol and preparation method and application thereof

An anti-corrosion coating and super-hydrophilic technology, applied in the direction of anti-corrosion coatings, coatings, fire-resistant coatings, etc., to achieve the effects of promoting application and development, simple preparation process, and high mechanical strength

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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