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Inorganic nano long-acting anti-fog self-cleaning coating as well as preparation method and application thereof

An inorganic nanometer and anti-fog technology, applied in the direction of coating, etc., can solve the problems of weakened hydrophilic effect and short aging time, and achieve the goal of improving cross-linking density, water resistance and chemical resistance, easy leveling, and strong hydrophilic performance Effect

Inactive Publication Date: 2021-12-03
上海保耐舒新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) At present, the most commonly used anti-fog coating is to use the slow release of surfactant to achieve the purpose of super hydrophilicity. Due to the loss of surfactant, the hydrophilic effect is rapidly weakened, and the coating returns to the hydrophobic state, and the time limit is short;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of inorganic nanometer long-lasting anti-fog self-cleaning coating, comprising the following steps:

[0039] (1) 0.5g magnesium aluminum silicate compound MgAl 2 SiO 6 ·3H 2 O is fully dissolved in 100g deionized water, stirred and kept at 60°C for 2 hours to obtain a high-viscosity hydrate; add 35g of morpholine silane-modified lithium silicate to the high-viscosity hydrate, stir at 80°C, 1500r / min Under the conditions, the organic amine AMP-95 is used as a pH regulator, the pH is controlled at 12, and the reaction is carried out for 2 hours to obtain a reactive hydrophilic monomer;

[0040] (2) Add the product of step (1), 12g of ethyl silicate, and 2.82g of s-triazinedithiol silane into 46.36g of deionized water, and carry out free radical polymerization at a temperature of 80°C for 3 hours to prepare polyhydroxy Hydrophilic silicate film-forming material with multiple hydrogen bonds.

[0041] (3) Add the silicate film-forming material obtain...

Embodiment 2

[0046] (1) 0.5g magnesium aluminum silicate compound MgAl 2 SiO 6 ·3H 2 O is fully dissolved in 100g deionized water, stirred and kept at 60°C for 2 hours to obtain a high-viscosity hydrate; add 42g of morpholine silane-modified lithium silicate to the high-viscosity hydrate, stir at 80°C, 1200r / min Under the conditions, the organic amine AMP-95 is used as a pH regulator, the pH is controlled at 12, and the reaction is carried out for 2 hours to obtain a reactive hydrophilic monomer;

[0047] (2) Add the product of step (1), 10 g of ethyl silicate, and 2.82 g of s-triazinedithiol silane into 52.81 g of deionized water, and carry out free radical polymerization at a temperature of 75°C for 3.5 hours to prepare poly Hydroxyl polyhydrogen bond hydrophilic silicate film-forming material.

[0048] (3) Add the silicate film-forming material obtained in step (2) and 8.6 g of yttrium-aluminum acetylacetonate trihydrate to 28.57 g of water, and keep it warm for 1.5 h at a water bath...

Embodiment 3

[0053] (1) 0.6g magnesium aluminum silicate compound MgAl 2 SiO 6 ·3H 2 O is fully dissolved in 100g deionized water, stirred and kept at 60°C for 2 hours to obtain a high-viscosity hydrate; add 47g of morpholine silane-modified lithium silicate to the high-viscosity hydrate, stir at 80°C, 1500r / min Under the conditions, the organic amine AMP-95 is used as the pH regulator, the pH is controlled at 11, and the reaction is carried out for 3 hours to obtain the reactive hydrophilic monomer;

[0054] (2) Add the product of step (1), 15g of ethyl silicate, and 3.16g of s-triazinedithiol silane into 55.62g of deionized water, and carry out free radical polymerization at a temperature of 80°C for 3 hours to prepare polyhydroxy Hydrophilic silicate film-forming material with multiple hydrogen bonds.

[0055] (3) Add the silicate film-forming material obtained in step (2) and 12 g of the yttrium-aluminum acetylacetonate trihydrate compound into 33.11 g of water, and keep it warm at ...

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Abstract

The invention provides an inorganic nano long-acting anti-fog self-cleaning coating as well as a preparation method and application thereof. The silicate modified by special silane has excellent film-forming property and relatively strong hydrophilic property; the composite organic acid metal salt of rare earth metal and aluminum has the effects of promoting silicate to form a film in a cross-linking mode and improving the cross-linking density, water resistance and chemical resistance of the coating, meanwhile, the rare earth metal and the aluminum are inserted and embedded in the thin coating in a penetrating mode to form a firm pinniform and interspersed micro-nano structure, and the super-hydrophilic condition is formed; besides, the polyhydroxy multi-hydrogen bond modified magnesium-aluminum compound is introduced and bonded with silicate to form a firm hydrophilic group, and a super-hydrophilic interface is formed in cooperation with the physical structure of the ultrathin coating, so that liquid is rapidly wetted and spread on the interface, and the coating has the water self-cleaning capacity. Through mutual cooperation of the raw materials, the coating forms an enamel surface of a long-acting wear-resistant super-hydrophilic inorganic micro-nano structure, the hardness of which is 9H and the hydrophilic angle of which is less than 5 degrees.

Description

technical field [0001] The invention relates to the technical field of paint preparation, in particular to an inorganic nanometer long-lasting anti-fog self-cleaning paint and its preparation method and application. Background technique [0002] In the daily environment, the surface of various materials has different degrees of repulsion to water, and water cannot form a uniform and continuous water film on the surface. Therefore, it is necessary to perform super-hydrophilic treatment on the surface of the material. Superhydrophilic treatment is divided into inorganic coating treatment, organic coating treatment and organic-inorganic composite coating treatment. The superhydrophilic surface with a water contact angle <5° can be obtained by treating the surface of the material with the given coating, and the formation mechanism of the superhydrophilic surface is different. Including the use of photocatalytic substances to form photoactivated superhydrophilicity, the use o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/20C09D7/61C09D7/63
CPCC09D1/00C09D7/20C09D7/61C09D7/63
Inventor 吕尚辉卞东蛟
Owner 上海保耐舒新材料技术有限公司