CN-118460102-B - Preparation method of corrosion-resistant anti-icing wear-resistant super-hydrophobic coating and product prepared by preparation method

Abstract

The invention discloses a preparation method of a corrosion-resistant anti-icing wear-resistant super-hydrophobic coating and a product prepared by the method, which takes graphite micropowder, alumina micropowder, ceramic fiber, nano alumina powder and methyl silicone resin as main raw materials and ethanol as a dispersing agent, according to a certain mass ratio, the coating is obtained by uniformly mixing, then the super-hydrophobic coating is prepared on the surfaces of different matrixes by adopting a spray coating or dip coating process and heat treatment. The product with the super-hydrophobic coating has the advantages of corrosion resistance, ice coating resistance, excellent wear resistance, simple process, low cost, environment friendliness, excellent performance and the like, and has wide application prospect in the fields of material surface protection and the like.

Inventors

• HU XUEBING

Assignees

• 景德镇陶瓷大学

Dates

Publication Date

20260505

Application Date

20230628

Claims (4)

1. 1. The preparation method of the corrosion-resistant anti-icing wear-resistant super-hydrophobic coating is characterized by comprising the following steps of: (1) The preparation method comprises the steps of taking micron/nanometer inorganic powder and methyl silicone resin as raw materials and ethanol as a dispersing agent, wherein the micron/nanometer inorganic powder is composed of graphite with an average particle size of 1-5 microns, alumina with an average particle size of 1-5 microns, ceramic fibers with a diameter multiplied by length of 1-5 microns multiplied by 40-200 microns and nanometer alumina with an average particle size of 50-200 nanometers, and mixing, by weight, 10-20 parts of graphite, 10-20 parts of alumina, 5-10 parts of ceramic fibers, 15-30 parts of nanometer alumina, 3-7 parts of methyl silicone resin and 100-500 parts of ethanol uniformly to obtain a coating; (2) Coating the coating on the surface of a substrate by adopting a spray coating or dip coating process, and then carrying out heat treatment at 100-200 ℃ for 10-30 minutes to prepare a corrosion-resistant anti-icing wear-resistant super-hydrophobic coating on the surface of the substrate; The method comprises the steps of coating surface water contact angle of 150-170 degrees and surface water rolling angle of 1-3 degrees, coating surface ice coating time delay of 454 seconds or more in a refrigerator, stabilizing in strong acid with pH value of 1, strong alkali with pH value of 14 or high salt solution of 3.5 wt% NaCl solution for 180 days or more, placing 100 g weight on the coating as applied constant pressure, and keeping the coating super-hydrophobic when abrasion distance reaches 12 meters.
2. 2. The method for preparing the anti-corrosion anti-icing wear-resistant super-hydrophobic coating according to claim 1, wherein the ceramic fiber is alumina fiber or mullite fiber.
3. 3. The method for preparing the anti-corrosion anti-icing wear-resistant superhydrophobic coating according to claim 1 or 2, wherein the substrate is made of ceramic, glass, metal, plastic or cloth.
4. 4. A superhydrophobic coating prepared by the method for preparing a corrosion-resistant ice-coating-resistant superhydrophobic coating according to any one of claims 1 to 3.

Description

Preparation method of corrosion-resistant anti-icing wear-resistant super-hydrophobic coating and product prepared by preparation method Technical Field The invention relates to the technical field of coating materials, in particular to a preparation method of a corrosion-resistant anti-icing wear-resistant super-hydrophobic coating and a product prepared by the same. Background The super-hydrophobic coating has a micro-nano structure with a special configuration and low surface energy, and can generate great repulsive effect on water, so that the coating has wide application prospects in various fields, such as corrosion resistance, self-cleaning, ice coating prevention, oil-water separation, fluid drag reduction and the like. In addition to building surface micro-nano structures, selecting the proper low surface energy material is also one of the key technologies to obtain superhydrophobic coatings. Fluorochemical compounds generally have low surface energies, making them of great interest in the field of superhydrophobic coating research. However, fluorine, which is expensive, causes serious toxic effects on human bodies and the environment, so that the preparation of the fluorine-free superhydrophobic coating is one of the key problems to be solved urgently. At present, the low mechanical strength and poor chemical stability of the super-hydrophobic coating become key barriers for limiting the application development of the super-hydrophobic coating. Because the surface energy of the super-hydrophobic coating is low, the mechanical strength of the super-hydrophobic coating is generally not high (mainly shown as poor wear resistance), and the super-hydrophobic coating is easy to damage and lose key super-hydrophobic performance, chemical stability and the like in the practical application process. Therefore, a new low-cost preparation technology is provided, and the development of the fluorine-free super-hydrophobic coating with high wear resistance and high chemical stability (such as corrosion resistance) has important significance for promoting the technical development and upgrading of the super-hydrophobic material and widening the practical application field of the super-hydrophobic material. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides a preparation method of a corrosion-resistant, ice-covering-resistant and wear-resistant superhydrophobic coating which is simple in process, low in cost, environment-friendly and free of fluorine, and the problems of low mechanical strength, poor chemical stability and the like of the superhydrophobic coating in the prior art are solved by taking fluorine-free micron/nanometer inorganic powder and methyl silicone resin as raw materials. It is another object of the present invention to provide a product produced by the above-described production method. The aim of the invention is realized by the following technical scheme: the invention provides a preparation method of a corrosion-resistant anti-icing wear-resistant super-hydrophobic coating, which comprises the following steps: (1) The preparation method comprises the steps of taking micron/nanometer inorganic powder and methyl silicone resin as raw materials and ethanol as a dispersing agent, wherein the micron/nanometer inorganic powder is composed of graphite with an average particle size of 1-5 microns, alumina with an average particle size of 1-5 microns, ceramic fibers with a diameter multiplied by length of 1-5 microns multiplied by 40-200 microns and nanometer alumina with an average particle size of 50-200 nanometers, and mixing, by weight, 10-20 parts of graphite, 10-20 parts of alumina, 5-10 parts of ceramic fibers, 15-30 parts of nanometer alumina, 3-7 parts of methyl silicone resin and 100-500 parts of ethanol uniformly to obtain a coating; (2) The coating is coated on the surface of a substrate by adopting a spray coating or dip coating process, and then the substrate is subjected to heat treatment for 10-30 minutes at the temperature of 100-200 ℃ to prepare the corrosion-resistant anti-icing wear-resistant super-hydrophobic coating on the surface of the substrate. Further, the ceramic fiber is alumina fiber, mullite fiber or asbestos fiber. The substrate is made of ceramic, glass, metal, plastic or cloth. The product prepared by the preparation method of the corrosion-resistant anti-icing wear-resistant super-hydrophobic coating has a surface water contact angle of 150-170 degrees and a surface water rolling angle of 1-3 degrees. The invention has the following beneficial effects: Aiming at the key constraint problems of low wear resistance, low chemical stability, fluorine-containing and the like which are commonly existed in the prior superhydrophobic coating, the invention provides the method which uses fluorine-free micron/nanometer inorganic powder and methyl silicone resin as raw materials, fundamentally solves the problems of mechanical str