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Superhydrophilic self-cleaning coating sol, and preparation method and use method thereof

A super-hydrophilic coating technology, applied in coatings, anti-fouling/underwater coatings, anti-corrosion coatings, etc., can solve the problems of low photocatalytic activity, high amorphous content, complex preparation methods, etc. Simple, low-cost, and easy-to-control operating conditions

Inactive Publication Date: 2018-09-04
泉州三欣新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titanium dioxide coatings prepared by chemical vapor deposition and magnetron sputtering usually have high amorphous content, low photocatalytic activity, complex preparation methods, and high equipment requirements; titanium dioxide coatings prepared by sol-gel methods require Baking at high temperature to improve adhesion and photocatalytic activity

Method used

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  • Superhydrophilic self-cleaning coating sol, and preparation method and use method thereof
  • Superhydrophilic self-cleaning coating sol, and preparation method and use method thereof
  • Superhydrophilic self-cleaning coating sol, and preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of nano-titanium dioxide solution

[0042] Mix 10g of anatase-type nano-titanium dioxide (average particle size is 10nm), 0.1g modifier, and 1000g of isopropanol, and disperse evenly under ultrasonic conditions to obtain a nano-titanium dioxide solution;

[0043] (2) Preparation of superhydrophilic self-cleaning coating sol

[0044] Mix the nano-titanium dioxide solution obtained in step (1), 5000 g of an organopolysilazane solution with a solid content of 10%, and xylene, stir at 5°C for 20 hours, seal and store, and obtain a superhydrophilic solution with a solid content of 3%. Self-cleaning coating sol. The inorganic polysilazane solution used comprises inorganic polysilazane, n-butyl ether and catalyst 4,4'-trimethylenebis(1-methylpiperidine), wherein the mass ratio of inorganic polysilazane and catalyst 10:0.01.

[0045] Apply the prepared superhydrophilic self-cleaning coating sol film on the substrate, and cure at 80° C. for 24 hours to obtain ...

Embodiment 2

[0047] (1) Preparation of nano-titanium dioxide solution

[0048] Mix 10g of anatase-type nano-titanium dioxide (average particle size of 2nm), 1g of modifier, and 800g of ethanol, and disperse evenly under ultrasonic conditions to obtain a nano-titanium dioxide solution;

[0049] (2) Preparation of superhydrophilic self-cleaning coating sol

[0050]Mix the nano-titanium dioxide solution obtained in step (1), 1000 g of an organopolysilazane solution with a solid content of 10%, and methanol, stir at 25°C for 10 hours, and store it in a sealed container to obtain a superhydrophilic silicone with a solid content of 3%. Clean coating sol. The inorganic polysilazane solution used comprises inorganic polysilazane, xylene and catalyst 1-methylpiperidine, wherein the mass ratio of inorganic polysilazane and catalyst is 10:0.001.

[0051] Apply the prepared superhydrophilic self-cleaning coating sol film on the substrate, and cure at 60° C. for 4 hours to obtain a superhydrophilic c...

Embodiment 3

[0053] (1) Preparation of nano-titanium dioxide solution

[0054] Mix 10g of anatase-type nano-titanium dioxide (average particle size is 5nm), 0.8g modifier, and 1000g of isopropanol, and disperse evenly under ultrasonic conditions to obtain a nano-titanium dioxide solution;

[0055] (2) Preparation of superhydrophilic self-cleaning coating sol

[0056] Mix the nano-titanium dioxide solution obtained in step (1), 10,000 g of an organopolysilazane solution with a solid content of 2%, and n-butanol, stir at 35°C for 40 hours, and seal and store to obtain a superphilic acid with a solid content of 1%. Water self-cleaning coating sol. The inorganic polysilazane solution used comprises inorganic polysilazane, n-butyl ether and catalyst 4,4'-trimethylenebis(1-methylpiperidine), wherein the mass ratio of inorganic polysilazane and catalyst is 10:1.

[0057] Apply the prepared superhydrophilic self-cleaning coating sol film on the substrate, and cure at 50° C. for 10 hours to obta...

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Abstract

The invention discloses a superhydrophilic self-cleaning coating sol formed by compounding titanium dioxide and inorganic polysilazane, and a preparation method and a use method thereof. The self-curing and strong-bonding superhydrophilic self-cleaning coating sol is prepared by compounding the titanium dioxide and inorganic polysilazane, and a coating formed by the coating sol has photocatalyticactivity and stable superhydrophilicity; and the preparation method has the advantages of simplicity, low cost, greenness, environmental protection, easiness in control of operating conditions, effectiveness in solving of the problems of poor photocatalytic activity and complex preparation technology of exiting coatings, and facilitation of promotion of the application and the development of a superhydrophilic technology.

Description

technical field [0001] The invention relates to a super-hydrophilic self-cleaning coating sol, in particular to a super-hydrophilic self-cleaning coating sol compounded by titanium dioxide and inorganic polysilazane, as well as its preparation method and application. Background technique [0002] In recent years, super-wettable surfaces generated by controlling the wettability of solid surfaces have attracted the attention of the industry. Separation, fresh water collection, heat exchangers for air conditioning and other fields have huge potential application value and become a research hotspot. In order to obtain a super-hydrophilic surface, it is necessary to coat a layer of super-hydrophilic coating on the surface of the material. Therefore, the development of coating materials with superhydrophilic properties has important application value and economic benefits. [0003] Titanium dioxide is most often used as a photocatalyst because of its strong oxidizing ability, hi...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/16C09D5/08C09D5/18C09D7/62
CPCC08K9/06C08K2003/2241C08K2201/011C09D1/00C09D5/08C09D5/1662C09D5/1687C09D5/18
Inventor 刘云鸿彭新艳刘云晖
Owner 泉州三欣新材料科技有限公司
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