A wear-resistant additive for superhydrophobic coatings and preparation method thereof, superhydrophobic wear-resistant coatings and superhydrophobic transparent coatings

A technology of wear-resistant additives and super-hydrophobic coatings, applied in coatings and other directions, can solve the problems of not being able to greatly improve coating hardness and mechanical stability, not being able to balance wear resistance and light transmission, and affecting coating light transmission. , to achieve good super-hydrophobic properties, good surface roughness, and increase the hardness

Active Publication Date: 2020-07-10
HENAN UNION ABRASIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydrophobicity requires the material surface to have low surface energy, but low surface energy modified materials usually have different degrees of influence on the transmission of light, making the coating surface have different gloss; when the coating thickness is large, this The impact is particularly obvious
[0005] In the prior art, in order to form a transparent superhydrophobic wear-resistant coating, some superhydrophobic coatings introduce silica particles to improve the hardness of the coating, but the Mohs hardness of silica is 7, which still cannot greatly improve the hardness of the coating. Hardness and mechanical stability, if the coating thickness is increased, the light transmission of the coating will be affected
There are also super-hydrophobic coatings that introduce carbon black. Although the wear resistance has been improved, the coating is opaque and cannot take into account both wear resistance and light transmission.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The wear-resistant additive for superhydrophobic coatings of the present embodiment is made up of the following components in mass percentage: 10% of nano-diamond, 1% of sodium hexametaphosphate, 0.01% of sodium hydroxide, and the balance is deionized water; the wear-resistant The pH of the additive is 8-10.

[0039] The preparation method of the anti-wear additive for superhydrophobic coating of the present embodiment, comprises the following steps:

[0040] 1) Add sodium hexametaphosphate and sodium hydroxide to deionized water, and use an explosion-proof high-shear emulsifier to emulsify and disperse for 20 minutes at a speed of 5000 rpm to obtain a mixed solution;

[0041] 2) While maintaining high-shear emulsification and dispersion, under 900W ultrasonic conditions, slowly add nano-diamond powder with an average particle size of 80nm into the mixture obtained in step 1) to prevent the nano-diamond powder from settling at the bottom of the container; After all the...

Embodiment 2

[0046] The wear-resistant additive for superhydrophobic coatings of this embodiment is composed of the following components in mass percentage: 15% of nano-diamond, 1.5% of sodium dodecylbenzenesulfonate, 0.01% of potassium hydroxide, and the balance is deionized water; The pH value of the anti-wear additive is 8-10.

[0047] The preparation method of the anti-wear additive for superhydrophobic coating of the present embodiment, comprises the following steps:

[0048] 1) Add sodium dodecylbenzenesulfonate and potassium hydroxide into deionized water, and use an explosion-proof high-shear emulsifier to emulsify and disperse at 8000rpm for 15 minutes to obtain a mixed solution;

[0049] 2) While maintaining high-shear emulsification and dispersion, under 900W ultrasonic conditions, slowly add nano-diamond powder with an average particle size of 50nm into the mixture obtained in step 1) to prevent the nano-diamond powder from settling at the bottom of the container; After all th...

Embodiment 3

[0054] The wear-resistant additive for superhydrophobic coatings of the present embodiment is made up of the following components in mass percentage: nano-diamond 20%, fatty alcohol polyoxyethylene ether 2%, triethanolamine 1%, and the balance is methyl ethyl ketone; The pH of the additive is 7-9.

[0055] The preparation method of the anti-wear additive for superhydrophobic coating of the present embodiment, comprises the following steps:

[0056] 1) Add fatty alcohol polyoxyethylene ether and triethanolamine into butanone, use an explosion-proof high-shear emulsifier, emulsify and disperse at 10,000 rpm for 10 minutes, and obtain a mixed solution;

[0057] 2) While maintaining high-shear emulsification and dispersion, under 900W ultrasonic conditions, slowly add nano-diamond powder with an average particle size of 20nm into the mixture obtained in step 1) to prevent the nano-diamond powder from settling at the bottom of the container; After all the diamond powder is added, ...

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Abstract

The present invention relates to a superhydrophobic coating material wear-resistant additive and a preparation method thereof, a superhydrophobic wear-resistant coating material, and a superhydrophobic transparent coating. The superhydrophobic coating material wear-resistant additive comprises, by mass, 10-20% of nanometer diamond, 1-2% of a surfactant, and the balance of a pH value adjusting agent and a solvent, wherein the pH value of the wear-resistant additive is 3-10 through the adding amount of the pH value adjusting agent. According to the present invention, the nanometer diamond is uniformly dispersed in the wear-resistant additive, the wear-resistant additive is added to the superhydrophobic coating material, the nanometer diamond is easily dispersed in the coating material, the solid surface is coated with the obtained coating material, and the nanometer diamond is fixed in the coating after curing; and the nanometer diamond has characteristics of small particle size and high hardness, such that the hardness of the coating can be substantially improved when the thickness of the superhydrophobic coating is very thin while the light transmittance of the coating is not reduced, and the obtained coating can maintain good surface roughness and good hydrophobicity for a long time so as to prolong the service life.

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic coatings, in particular to a wear-resistant additive for superhydrophobic coatings and a preparation method thereof, and also to a superhydrophobic wear-resistant coating using the wear-resistant additive and the formation of the superhydrophobic wear-resistant coating superhydrophobic transparent coating. Background technique [0002] Since the microstructure of the lotus leaf surface was first reported by the Barthlott research group at the University of Bonn in Germany in the late 1990s, the superhydrophobicity in the extreme wetting behavior of the solid surface, also known as the "lotus leaf effect", has attracted researchers. of great interest. A superhydrophobic surface generally refers to a surface whose contact angle between a solid surface and water is greater than 150°, and the difference between the advancing contact angle and the receding contact angle is less than 5°. Sinc...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C09D7/61C09D7/65C09D7/63C09D183/04C09D127/12
CPCC08K3/04C08K3/32C08K5/42C08K2201/011C08L2201/10C09D4/00C09D7/61C09D7/63C09D7/65C09D127/12C08L71/02C08K5/17
Inventor王森付存高礼明汪静
OwnerHENAN UNION ABRASIVES