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Light catalyzed coating modified by nitrogen dopen Nano titanium dioxide and preparation method

A nano-titanium dioxide and photocatalytic technology, which is applied in the field of interior decoration and decoration, can solve the problems of low photocatalytic efficiency and narrow photoresponse range, and achieve the effects of continuous and stable antibacterial performance, simple preparation process, and improved use efficiency

Inactive Publication Date: 2005-11-16
UNIV OF SCI & TECH 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 provide a nitrogen-doped nano-titanium dioxide modified photocatalytic coating and a preparation method thereof, which overcomes the narrow photoresponse range and low photocatalytic efficiency of existing photocatalytic nano coatings, which cannot be effectively excited by visible light sources. Disadvantages of antibacterial and sterilization

Method used

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  • Light catalyzed coating modified by nitrogen dopen Nano titanium dioxide and preparation method
  • Light catalyzed coating modified by nitrogen dopen Nano titanium dioxide and preparation method
  • Light catalyzed coating modified by nitrogen dopen Nano titanium dioxide and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Each component and its weight (Kg) are as follows:

[0043] Silicone acrylic emulsion 20

[0044]Titanium dioxide 18

[0045] Kaolin 8

[0046] Ground calcium carbonate 4

[0047] Light calcium carbonate 9

[0048] Wollastonite powder 12

[0049] Surfactant 2

[0050] Wetting and dispersing agent 0.28

[0051] Coalescing aid 0.30

[0052] Fiber Thickener 2

[0053] water 23

[0054] Ammonia 0.6

[0055] Defoamer 0.8

[0056] Antifungal agent 0.02

[0057] The preparation method is as follows:

[0058] 1. Measured according to the above components and their weights, put the measured total mass of surfactants, film-forming aids, ammonia water and defoamer 0.4Kg, wetting and dispersing agent 0.2Kg and water 23Kg into a high-speed mixer , stirring at high speed for 6 minutes.

[0059] 2. Add the measured amount of titanium dioxide, kaolin, heavy calcium carbonate, light calcium carbonate, wollastonite powder and defoamer 0.2Kg, wetting and dispersing agent 0.0...

Embodiment 2

[0062] Each component and its weight (Kg) are as follows:

[0063] Silicone acrylic emulsion 22

[0064] Ordinary nano TiO 2 2

[0065] Titanium dioxide 16

[0066] Kaolin 9

[0067] Ground calcium carbonate 4

[0068] Light calcium carbonate 8

[0069] Wollastonite powder 13

[0070] Surfactant 2

[0071] Wetting and dispersing agent 0.28

[0072] Coalescing aid 0.30

[0073] Fiber Thickener 2

[0074] water 20

[0075] Ammonia 0.6

[0076] Defoamer 0.8

[0077] Antifungal agent 0.02

[0078] The preparation method is as follows:

[0079] 1. Measured according to the above components and their weights, put the measured total mass of surfactants, film-forming aids, ammonia water and defoamer 0.4Kg, wetting and dispersing agent 0.20Kg and water 20Kg into a high-speed mixer , stirring at high speed for 6 minutes.

[0080] 2. Add the measured amount of titanium dioxide, kaolin, heavy calcium carbonate, light calcium carbonate, wollastonite powder and...

Embodiment 3

[0083] Each component and its weight (Kg) are as follows:

[0084] Silicone acrylic emulsion 21

[0085] Nitrogen doped nano TiO 2 2

[0086] Titanium dioxide 16

[0087] Kaolin 8

[0088] Ground calcium carbonate 5

[0089] Light calcium carbonate 9

[0090] Wollastonite powder 12

[0091] Surfactant 2

[0092] Wetting and dispersing agent 0.28

[0093] Coalescing aid 0.30

[0094] Fiber Thickener 2

[0095] water 21

[0096] Ammonia 0.6

[0097] Defoamer 0.8

[0098] Antifungal agent 0.02

[0099] The preparation method is as follows:

[0100] 1. According to the above-mentioned components and their weight measurement, first put the measured total mass of surfactant, film-forming aid, ammonia water and defoamer 0.4Kg, wetting and dispersing agent 0.2Kg and water 21Kg into the high-speed mixer , stirring at high speed for 6 minutes.

[0101] 2. Add the measured amount of titanium dioxide, kaolin, heavy calcium carbonate, light calcium carbonate...

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Abstract

A nitrogen doped nano-TiO2 modified photocatalytic paint with low content of volatile VOC, and high ultraviolet shielding-absorbing and antibacterial effect is prepared from silicic acrylate emulsion, nitrogen doped nano-TiO2, ordinary nano-TiO2, titanium oxide powder, kaolin, heavy and light calcium carbonate, wallastonite powder, assistant, water, ammonia water, defoaming agent and antimildew agent through proportional mixing, stirring and filtering.

Description

technical field [0001] The invention belongs to the technical field of interior decoration and decoration, and in particular provides a nitrogen-doped nano-titanium dioxide modified photocatalytic coating and a preparation method thereof, and uses nitrogen-doped nano-titanium dioxide with visible light photoresponse as a modifier to prepare a photocatalytic coating and the preparation thereof method. The coating can be used in interior decoration, mildew and antibacterial and other places, and has obvious antibacterial ability. Background technique [0002] Due to its unique photocatalytic properties, nano-titanium dioxide has a very broad application prospect in air pollution control, water environment purification treatment, and antibacterial wall coating. But TiO 2 With a wide band gap (3.2ev), it can only respond to ultraviolet light with a wavelength of less than 400nm (accounting for about 4% of sunlight), and has a weak response to visible light (accounting for 43% ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/00
CPCC04B2111/2061C04B26/06
Inventor 曹文斌张小宁李艳红冉凡勇韦祎
Owner UNIV OF SCI & TECH BEIJING
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