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Modified alumina sol and nano ceramic coating, and preparation methods thereof

A nano-ceramic, aluminum sol technology, applied in chemical instruments and methods, antifouling/underwater coatings, coatings, etc., can solve problems such as poor air purification and sterilization effect

Active Publication Date: 2015-07-01
JIANGSU KAOPULE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An object of the present invention is to overcome the disadvantages of poor air purification and bactericidal effect in the prepared ceramic coating when aluminum sol is used to prepare ceramic coatings in the prior art, and to provide a kind of aluminum sol that can be prepared with good air purification and bactericidal functions. Modified aluminum sol of ceramic coating and preparation method thereof

Method used

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  • Modified alumina sol and nano ceramic coating, and preparation methods thereof
  • Modified alumina sol and nano ceramic coating, and preparation methods thereof
  • Modified alumina sol and nano ceramic coating, and preparation methods thereof

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preparation example Construction

[0041] step II) Preparation of emulsions of terpene compounds

[0042] The terpene compound is made into an emulsion by stirring in the presence of complex emulsifiers.

[0043] The terpene compound used in the present invention can be hemiterpene, monoterpene, sesquiterpene, diterpene, polyterpene or mixture thereof, preferably selected from the group consisting of isoprene, pinene, limonene, Myrcene, Camphene, Zingiberene, Camphorene, and Squalene. The amount of the terpene compound is 0.5-10% by weight, preferably 1-8% by weight, more preferably 2-7% by weight based on the weight of the semiconductor material-doped nano-titanium dioxide used in step I).

[0044] Because in the oil-in-water or water-in-oil emulsifier system, the emulsifier should not only have a strong affinity with the dispersed phase, but also have a strong affinity with the dispersion medium. It is often difficult for a single emulsifier to meet the requirements of these two aspects. A compound emuls...

Embodiment 1

[0095] (1) 20 grams of nano-titanium dioxide doped with ferric oxide (using the nano-titanium dioxide doped with ferric oxide as prepared in step 1 of Chinese invention patent application 02103829.5 embodiment 1 as a matrix, wherein titanium dioxide and ferric oxide The weight ratio is 67:33, and the particle size of the matrix is ​​30-60nm) in the presence of 0.6 g of sodium propenyl sulfonate, fully dispersed in 100 ml of pure water at 50° C. to form an aqueous dispersion. The composite emulsifier (composite hydrophilic lipophilic balance value: 0.8 * 14.9+0.2 * 4.3=12.78, the weight of composite emulsifier is 3 grams) and 0.4 gram α-pinene by 2.4 gram Tween60 and 0.6 gram Span80 composition Mix under the mixer and stir for half an hour to obtain an emulsion. Then, within about 1 minute, the emulsion was added dropwise to the above-mentioned 100ml semiconductor-doped nano-titanium dioxide dispersion in water, fully stirred, and then dried at 20°C and 20mmHg for 5 hours to ob...

Embodiment 2

[0102] (1) In embodiment 2, use the zinc oxide-doped nano-titanium dioxide as substrate prepared in embodiment 2 step 1 of Chinese invention patent application 02103829.5, wherein the weight ratio of titanium dioxide and zinc oxide is 80:20, and the The particle size is 50-80nm. Fully disperse 30 grams of zinc oxide-doped nano-titanium dioxide in 100 ml of pure water at 50° C. in the presence of 1.2 grams of sodium dodecylbenzenesulfonate to form an aqueous dispersion. The composite emulsifier (composite hydrophilic lipophilic balance value: 0.82 * 14.9+0.18 * 4.3=12.99, the weight of composite emulsifier is 5 grams) and 1.5 gram myrcene by 4.1 gram Tween60 and 0.9 gram Span80 composition Mix and stir for half an hour to obtain an emulsion. Then, within about 2 minutes, the emulsion was added dropwise to the above-mentioned 100ml dispersion of semiconductor-doped nano-titanium dioxide in water, fully stirred, and then dried at 20°C and 20mmHg for 5 hours to obtain modified na...

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Abstract

The invention relates to a modified alumina sol and a preparation method thereof. The modified alumina sol contains an alumina sol and modified nano titanium dioxide, and the alumina sol and the modified nano titanium dioxide are coupled by a coupling agent, wherein the modified nano titanium dioxide contains A) a semiconductor material doped nano titanium dioxide as a matrix, B) a conjugated system organic compound covering the surface of the semiconductor material doped nano titanium dioxide matrix, and C) a terpene compound covering the semiconductor material doped nano titanium dioxide matrix; with the total weight of the modified alumina sol as a benchmark, the content of the coupling agent is 0.5-5 wt.%, the content of the alumina sol is 70-98.5 wt%, the content of the modified nano titanium dioxide is 1-6.5 wt.%, and the total amount of all the components is 100 wt.%. The invention also relates to a nano ceramic coating and a preparation method thereof. The nano ceramic coating has good air-purifying and sterilizing performance.

Description

technical field [0001] The invention relates to modified aluminum sol and nano ceramic paint and a preparation method thereof. Background technique [0002] Aluminum sol is widely used, and it is mainly used to prepare carriers, porous membranes and heat insulation layers. At present, the methods for preparing aluminum sol mainly include the hydrolysis method of aluminum alkoxide, the synthesis method of inorganic aluminum salt, and the decomposition method of sodium aluminate solution seed crystals. When the aluminum sol in the prior art is used to prepare nano-ceramic coatings, the obtained nano-ceramic coatings usually have the disadvantages of poor air purification and sterilization effects. [0003] Nano-ceramic coating is a kind of high-temperature resistant inorganic coating prepared by sol-gel method. This type of coating usually uses silica sol to prepare polysiloxane coating. The silica sol contained in this type of coating has high hardness and is non-combustibl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/06C09C3/08C09C3/12C09D1/00C09D5/14C09D7/12
Inventor 于义龙纪志勇李昊耿雷陶月明
Owner JIANGSU KAOPULE NEW MATERIALS