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A kind of inorganic-organic hybrid superhydrophilic self-cleaning coating and its production method

A technology of self-cleaning coating and organic hybridization, applied in the direction of coating, etc., can solve the problems of affecting the self-cleaning effect of the coating, reducing the service life of the coating, and being easily covered by pollutants, so as to shorten the hardening time and improve Effect of weather resistance and good construction performance

Active Publication Date: 2017-01-18
NANJING MISURFACE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the coating materials produced according to the methods reported in some patents have certain photocatalytic self-cleaning properties, but there are still many problems as self-cleaning coatings: (1) Traditional self-cleaning coatings use photocatalysts such as titanium oxide Catalytic materials are highly dependent on ultraviolet rays and light; (2) When traditional organic polymers are used as binders, due to the service life of the organic matter itself, the self-cleaning coating is prone to aging and damage, resulting in coating The service life is reduced; (3) Since the main pollution sources in China are dust, dust, yellow sand, carbon ash, and automobile exhaust, the traditional self-cleaning coating has a single structure and is easily covered by pollutants, which affects the self-cleaning of the coating Effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In the embodiment of the present invention, an inorganic-organic hybrid super-hydrophilic self-cleaning coating comprises 60% of solvent (40% of methanol, 10% of isobutanol and 10% of diethylene glycol) according to the weight percentage of raw materials, Composite binder 20%, curing agent 10% (Na 2 SiO 3 Solution 5% and Al 2 o 3 • SiO 2 solution 5%) and functional materials 10% (titanium oxide solution 3%, tin oxide solution 5% and aluminum oxide solution 2%).

[0049] The production method of the described inorganic-organic hybrid superhydrophilic self-cleaning coating, the specific steps are:

[0050] 1) Preparation of siloxane resin: 10kg (10%) of methyltrimethoxysilane, 20kg (20%) of tetraethyl orthosilicate, 10kg (10%) of hydrochloric acid solution, 20kg (20%) of methanol according to weight percentage ), 20kg (20%) of isopropanol, and 20kg (20%) of deionized water are mixed, and the pH value of the solution is adjusted to 3-4 and stirred. Then the mixed sol...

Embodiment 2

[0056] In the embodiment of the present invention, an inorganic-organic hybrid super-hydrophilic self-cleaning coating comprises 80% solvent (50% ethanol, 10% propylene glycol and 20% diethylene glycol) as raw materials by weight percentage, composite bonding 10% agent, 3% curing agent (K 2 SiO 3 Solution 1%, Zn(OH) 2 Solution 1% and Al 2 o 3 •B 2 o 3 solution 1%) and functional materials 7% (iron oxide solution 3%, zinc oxide solution 2% and chromium oxide solution 2%).

[0057] The production method of the described inorganic-organic hybrid superhydrophilic self-cleaning coating, the specific steps are:

[0058] 1) Preparation of siloxane resin: 15kg (15%) of phenyltrimethoxysilane, 10kg (10%) of γ-aminopropyltriethoxysilane, 10kg (10%) of tetramethyl orthosilicate according to weight percentage %), 15kg (15%) of nitric acid solution, 30kg (30%) of ethanol, and 20kg (20%) of deionized water, adjust the pH value of the solution to 3-4 and stir. Then the mixed solution...

Embodiment 3

[0064] In an embodiment of the present invention, an inorganic-organic hybrid superhydrophilic self-cleaning coating comprises 90% of solvents (60% of propanol, 20% of ethylene glycol monobutyl ether and neopentyl diethylene glycol) in terms of weight percentage. Alcohol 10%), composite binder 5%, curing agent 4% (Li 2 SiO 3 Solution 1%, Mg(OH) 2 Solution 2% and CaO·SiO 3 solution 1%) and functional material 1% (zirconia solution 0.3%, platinum oxide solution 0.5% and arsenic trioxide solution 0.2%).

[0065] The production method of the described inorganic-organic hybrid superhydrophilic self-cleaning coating, the specific steps are:

[0066] 1) Preparation of siloxane resin: 40kg (40%) of 3-propenyloxypropyltrimethoxysilane, 10kg (10%) of tetraethyl orthosilicate, and 10kg (10%) of nitrous acid solution according to weight percentage , propanol 20kg (20%), n-butanol 10kg (10%), deionized water 10kg (10%) mixed, adjust the pH value of the solution to 3-4 and stir. Then t...

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Abstract

The invention discloses an inorganic-organic hybrid super-hydrophilic self-cleaning coating and a production method thereof. The inorganic-organic hybrid super-hydrophilic self-cleaning coating is prepared from the following raw materials in percentage by weight: 60-90% of a solvent, 5-20% of a compound binder, 3-10% of a curing agent and 1-10% of a functional material. By adopting an inorganic-organic hybrid process, the inorganic-organic hybrid super-hydrophilic self-cleaning coating which is excellent in various performances such as hydrophilicity, dust resistance, pollution prevention, mildew resistance, weather resistance and durability is prepared. The coating is coated on the surface of a base material to form a concave-convex film of a micro-nano structure, so that the surface of the base material obtains the functions of hydrophilicity, dust resistance, pollution prevention, self-cleaning property and the like. The coating disclosed by the invention is suitable for large-area construction, has the advantages of high film forming hardness, high self-cleaning property, good wear resistance and good durability, and can be applied to surfaces of building external walls, glass, tiles, marbles, artificial stones, plastic, aluminum sheets, displays, walls and the like.

Description

technical field [0001] The invention relates to a self-cleaning coating and a production method thereof, in particular to an inorganic-organic hybrid superhydrophilic self-cleaning coating and a production method thereof. Background technique [0002] Since the concept of "self-cleaning" was proposed in the 1990s, its research and commercialization have developed rapidly. According to the different self-cleaning principles, self-cleaning coating materials can be divided into two types: super-hydrophobic and super-hydrophilic. They all achieve their own self-cleaning effect through the action of water. Super-hydrophobic coating materials take away pollutants through the rolling of water droplets to achieve a self-cleaning function similar to that of lotus leaves; while super-hydrophilic coating materials realize self-cleaning by forming a water film on its surface and taking away or isolating pollutants. cleansing effect. However, in the actual environment with a wide varie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D1/00C09D7/12
Inventor 孙倩
Owner NANJING MISURFACE NEW MATERIAL TECH