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Nano functional coating and its preparation method and application

A nano-functional, coating technology, applied in conductive coatings, radiation-absorbing coatings, antifouling/underwater coatings, etc., can solve the problems of short curing time, poor light transmission, large contact angle, etc., and achieve short curing time , The effect of high light transmittance and small contact angle of the coating

Active Publication Date: 2021-08-06
MATERIAL & IND TECH RES INST BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the prior art such as large contact angle and poor light transmittance, and provide a self-cleaning product with good self-cleaning performance, absorbing ultraviolet light, purifying air, good weather resistance, high adhesion, and long service life. Long, super-hydrophilic, anti-static, can be cured at room temperature and the curing time is short, easy to construct and can realize large-area construction nano-functional coatings and its preparation method, mainly used on glass surfaces, especially for glass curtain wall surfaces

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  • Nano functional coating and its preparation method and application
  • Nano functional coating and its preparation method and application

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preparation example Construction

[0019] In a first aspect, the present invention provides a method for preparing a nano-functional coating, comprising the following steps:

[0020] (1) mixing alcohol, silicate compound and organosilane modifier, and then under acidic conditions, mixing the resulting mixture with graphene and / or carbon nanotube dispersion and water to prepare an inorganic adhesive;

[0021] (2) under alkaline conditions, anatase nano-titanium dioxide powder, a dispersant and a dispersion medium are mixed to prepare a nano-titanium dioxide dispersion;

[0022] (3) mixing the inorganic adhesive obtained in step (1) with the nano-titanium dioxide dispersion obtained in step (2) to obtain a nano-functional coating;

[0023] Wherein, the organosilane modifier is selected from amino group-containing silane coupling agents.

[0024] In the method of the present invention, the selection of the organic alcohol in step (1) is not particularly limited, and can be conventionally selected in the field, as...

preparation Embodiment 1

[0061] (1) Mix and stir 84.50g absolute ethanol, 26.00g tetraethyl orthosilicate, and 29.25g N-β(aminoethyl)-γ-aminopropyltrimethoxysilane evenly, and rinse with hydrochloric acid (concentration is 36.5%) wt) to adjust the pH to 3, then slowly add 21.70g of water and 1g of graphene water dispersion with a mass fraction of 0.5% under stirring, and obtain a modified silica / graphene composite nano-inorganic adhesive after stirring and reacting. 50nm;

[0062] (2) Using water as the dispersion medium, stir and mix the anatase titanium dioxide nanopowder, dispersant and dispersion medium at a mass ratio of 1:0.004:5.7, and prepare by ultrasonic pulverization and dispersion at 50°C and pH=8 Nano-titanium dioxide aqueous dispersion, and further diluting the aqueous dispersion to obtain a concentration of 0.5% nano-titanium dioxide aqueous dispersion dilution;

[0063] (3) The modified silica / graphene composite nano-inorganic adhesive obtained in step (1) is slowly added to the nano-...

preparation Embodiment 2

[0065] (1) 75.00g of absolute ethanol, 23g of tetraethyl orthosilicate, and 25.88g of N-β (aminoethyl)-γ-aminopropyltrimethoxysilane were mixed and stirred evenly, and then mixed with hydrochloric acid (concentration is 36.5%wt) ) to adjust the pH to 2.5, then slowly add 20g of water and 3g of graphene dispersion with a mass fraction of 0.8% under stirring, and obtain a modified silica / graphene composite nano-inorganic adhesive after stirring and reacting, with a particle size of 30nm;

[0066] (2) Using water as the dispersion medium, stir and mix the anatase titanium dioxide nano-powder, dispersant and water at a mass ratio of 1:0.004:5.7, and use ultrasonic pulverization and dispersion at 60°C and pH=7 to prepare nano-particles Titanium dioxide aqueous dispersion, further diluting the aqueous dispersion to obtain a concentration of 0.8% nanometer titanium dioxide aqueous dispersion dilution;

[0067] (3) The modified silica / graphene composite nano-inorganic adhesive obtaine...

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Abstract

The invention relates to the field of nano functional coatings, and discloses a nano functional coating mainly suitable for glass surfaces, a preparation method and an application thereof. The method comprises the following steps: (1) mixing alcohol, silicate compound and organosilane modifier, and then mixing the resulting mixture with graphene and / or carbon nanotube dispersion and water under acidic conditions Prepare an inorganic adhesive; (2) under alkaline conditions, mix and contact anatase nano-titanium dioxide powder, a dispersant and a dispersion medium to prepare a nano-titanium dioxide dispersion; (3) mix the inorganic adhesive obtained in step (1) The adhesive product is mixed with the nano-titanium dioxide dispersion liquid product obtained in step (2) to obtain a nano-functional coating; wherein, the organosilane modifier is selected from silane coupling agents containing amino groups. The coating formed by the coating of the invention has the advantages of high hardness, superhydrophilicity, high light transmittance, good durability and the like.

Description

technical field [0001] The invention relates to the field of nano-functional coatings, in particular to a nano-functional coating mainly suitable for glass surfaces and a preparation method and application thereof. Background technique [0002] With the development of modern science and technology and glass technology and the improvement of people's living standards, the function of architectural glass is no longer just to meet the lighting requirements. The amount of glass used in buildings has increased rapidly, becoming the third largest building material after cement and steel. . Especially the glass curtain wall used in architecture in recent years, as a new type of contemporary wall, its biggest feature is to organically unify architectural aesthetics, architectural functions, architectural energy-saving and architectural structure. Different angles show different hues, giving people a dynamic beauty with the changes of sunlight, moonlight and light. Magnificent and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/61C09D5/32C09D5/24C09D5/16C03C17/30C03C17/25C03C17/22
CPCC03C17/009C03C2217/212C03C2217/28C03C2217/29C03C2217/445C03C2217/465C03C2217/475C03C2218/11C09D1/00C09D5/1656C09D5/1687C09D5/24C09D5/32
Inventor 凡雪迎张林徐秀娟
Owner MATERIAL & IND TECH RES INST BEIJING
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