Superhydrophobic coating spray for material surface protection and preparation and use methods thereof

Abstract

The invention provides a superhydrophobic coating spray for material and facility surface protection and preparation and use methods thereof. The superhydrophobic coating spray is low-viscosity liquid, and is prepared from nanometer structure and micrometer structure particles and hydrophobic substances through a chemical reaction; a layer of superhydrophobic film can be formed on the surface of a base material to be protected through a spray coating process; the film has a micrometer-nanometer composite dual structure similar to the surface of a lotus leaf; the contact angle with water is not smaller than 150 degrees; the rolling angle is smaller than 10 degrees; good hydrophobic performance is realized. The superhydrophobic coating spray provided by the invention has the advantages that the cost is low; the materials and the process achieve the environment-friendly effects; the manufacturing and the spray coating processes are simple and convenient; the limitation by the base material or the facility shape is avoided; the industrialization can be easily realized; the protection effect durability is good. The superhydrophobic coating spray can be widely applied to the hydrophobic protection of the material base material surfaces of concrete, metal, glass and the like, so that the excellent hydrophobic effect can be shown on the surface of the base material; meanwhile, the functions of self-cleaning pollution resistance, the anti-corrosion function, the ice and frost condensing inhibiting function and the like can also be realized.

Description

technical field [0001] The invention relates to the surface hydrophobization protection of concrete, metal, glass, stone, textiles, plastics, wood and other material substrates, and its application scope is transportation facilities, buildings, vehicles, fabrics and the like. Specifically, it relates to a super-hydrophobic coating spray for surface protection of materials and facilities, and a preparation and use method thereof. Background technique [0002] Under the action of physical or chemical factors such as atmosphere, sunlight, acid rain, salt spray, high and low temperature, facilities made of concrete, metal, glass, stone, textiles, plastic, wood and other materials will have various problems during use. For example, the metal surface will be corroded and rusted, concrete and stone are easily corroded by moisture, high and low temperature changes, and alkali and acid, and will be weathered and cracked, glass surfaces will be fogged and frosted, textile surfaces wil...

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Problems solved by technology

[0006] Patents with publication numbers CN101734945, CN103923561, CN104231916A, CN102795786A, and CN104650725 use organosilicon, surface-modified nanoparticles, graphene, etc. to prepare protective agents. Short time, limited practicality when applied to engineering

[0007] However, these existing methods more or less have the following problems: (1) use expensive materials (such as fluoropolymers with a very low surface) or equipment, which have high cost and low practical value; Toxic solvents (such as toluene, xylene, etc.) are not conducive to construction and environmental protection application requirements; (3) the surface of the substrate needs to be ground, polished, cleaned and other cumbersome treatments before the application of the protective agent; (4) it is difficult to achieve excellent Hydrophobic effect or super-hydrophobic coating is not firmly attached, it is easy to damage under the action of external force, and the protection time is short; (5) It requires complicated preparation technology, it is difficult to construct on a large-area engineering surface, and its practicability is greatly affected when it is applied to engineering. large limitations, etc.

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