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Self-cleaning coating

A self-cleaning and coating technology, applied in the field of self-cleaning, which can solve the problems of surface failure and short service life of self-cleaning surfaces

Inactive Publication Date: 2018-08-17
刘峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] e) The antistatic surface can prevent dust from accumulating on the surface of the object due to static electricity, but even if the efficiency reaches more than 90%, the dust cannot be effectively cleaned over time and will eventually lead to surface failure. In complex pollution and high pollution areas, this Very short-lived self-cleaning surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The coating is composed of nano titanium dioxide, oxygen-deficient titanium oxide and quantum dot titanium dioxide, the particle size of the nano titanium dioxide is <50nm, and the particle size of the quantum dot titanium dioxide is <5nm.

[0040] Part of the titanium dioxide is an anatase structure to provide photocatalytic effect; oxygen-deficient titanium oxide can absorb part of the blue wavelength light, so as to better provide photocatalysis and hydrophilicity under visible light, and can be doped with carbon or nitrogen Formed, or formed by other cation doping; part of titanium dioxide is a non-stereosymmetric structure, and its aspect ratio is greater than 1, preferably greater than 1.5, in order to form a porous film after the surface is piled up, and at the same time it is beneficial to expose the most surface breaking chemical bonds to improve hydrophilicity The above-mentioned porous titanium oxide structure is conducive to the formation of hydrophilicity; t...

Embodiment 2

[0042] The coating is composed of nano-titanium dioxide, oxygen-deficient titanium oxide and silicon oxide; the particle size of the nano-titanium dioxide is less than 50nm.

[0043] Silicon oxide appears on the surface of titanium dioxide in the form of surface modification; part of titanium dioxide is anatase structure to provide photocatalytic effect; oxygen-deficient titanium oxide can absorb part of blue wavelength light, so as to better provide photocatalysis and affinity under visible light. Water-based, can be formed by carbon doping or nitrogen doping, or other cation doping; some titanium dioxide has a non-spherical structure, similar to a cube, providing a denser surface coating structure, while using the voids between the cubes to form a porous structure . The mixture of porous titanium oxide and silicon oxide helps to form hydrophilicity, and the mixture of porous titanium oxide and silicon oxide can form an antistatic surface in combination with air.

Embodiment 3

[0045] The coating is composed of fluorosilane, oxygen-deficient titanium oxide and silicon oxide, and the particle size of the titanium dioxide is less than 50nm.

[0046] Silicon oxide appears on the surface of titanium dioxide in the form of surface modification, and part of titanium dioxide is anatase structure to provide photocatalytic effect; oxygen-deficient titanium oxide can absorb part of blue wavelength light, so as to better provide photocatalysis and affinity under visible light. Water-based, can be formed by carbon doping or nitrogen doping, or other cation doping; some titanium dioxide has a non-spherical structure, similar to a cube, providing a denser surface coating structure, while using the gaps between the cubes to form a porous structure; Fluorosilane provides superhydrophobicity after connecting the titanium oxide porous surface and the substrate surface; the above porous surface structure helps to improve the hydrophobic performance; the above porous tit...

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Abstract

The invention discloses a self-cleaning coating, which is formed by compounding one or various coatings in one time or multiple times. The coating at least comprises the following three substances: a)hydrophilic material, b) hydrophobic material, c) porous material, d) photocatalysis material and e) antistatic material. The self-cleaning coating is a functional material which compounds more thanthree specific physical properties, one-time or multi-time compounding is used for forming a self-cleaning surface so as to form an environment-friendly self-cleaning surface, the surface can be formed by the coating, and the surface also can be constructed by chemical vapor deposition or physical vapor deposition according to a key principle. According to the self-cleaning coating, through an innovative physical chemistry design, various physical chemistry surface characteristics are integrated. According to the construction method, advanced self-cleaning surfaces superior to common self-cleaning coatings and the like sold in the market can be produced.

Description

technical field [0001] The invention relates to the field of self-cleaning, in particular to a self-cleaning coating. Background technique [0002] At present, the research work on self-cleaning and anti-fouling surfaces in various countries in the world is gradually increasing, among which super-hydrophobic or super-hydrophilic technology is a typical self-cleaning technology, and its typical materials are (zinc oxide, silicon oxide, titanium oxide, tungsten oxide , Fluorosilane). There are also typical representatives of photocatalytic technology (titanium oxide, tungsten oxide, cadmium sulfide, perovskite, etc.) for environmental purification, which has its unique advantages. It has a stable effect on substances with high and low concentrations, and is environmentally friendly. Harmless to the human body, it can effectively decompose VOCs, NOx and other pollutants in the air. There is also a method of using surface composite conductive materials to reduce the effect o...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/16C09D5/24C09D7/61
CPCC09D1/00C09D5/1687C09D5/24D06M11/46D06M11/58D06M11/79D06M13/513D06M11/48A47G27/02D06M2101/34D06M2200/01D06M11/74D06M11/83D06M11/44D06M11/45D06M15/643D06M2200/12D06M23/08C09D5/1681B82Y30/00C03C17/006C09D7/61C09D7/62C09D7/67C09D7/70C09D7/80C01G25/02C01B21/0615C01G23/0536C01G23/0532C01P2002/54C01P2004/10C03C17/256C03C2217/212C03C2217/23C03C2217/24C03C2217/22C03C2217/219C03C2217/71C03C2218/112B82Y40/00D06M11/78
Inventor 刘峰
Owner 刘峰
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