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Preparation method and application of ZnO/TiO2 composite powder

A composite powder and mixed liquid technology, applied in biocide-containing paints, anti-fouling/underwater coatings, radiation-absorbing coatings, etc., can solve the problems of easy introduction of impurities, poor performance, large particle size of composite powders, etc. problem, to achieve the effect of good controllability, good scattering ability, and small original particle size

Active Publication Date: 2012-08-01
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the nano-ZnO / TiO obtained by milling 2 The particle size of the composite powder is relatively large, and impurities are easily introduced during the preparation process. Nano-ZnO / TiO 2 When the composite powder is used as an automotive coating additive, its performance is not good, and there are technical problems

Method used

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  • Preparation method and application of ZnO/TiO2 composite powder
  • Preparation method and application of ZnO/TiO2 composite powder
  • Preparation method and application of ZnO/TiO2 composite powder

Examples

Experimental program
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Embodiment 1

[0051] 1) Dissolve 0.002mol zinc acetate and 0.4g (0.001148mol) sodium dodecylbenzenesulfonate in ethanol, then add 0.004mol tetrabutyl titanate, and mix to obtain 10mL raw material solution;

[0052] 2) under stirring condition, in the raw material liquid in step 1), add dropwise the sodium hydroxide aqueous solution of 10mL, the concentration of sodium hydroxide in the sodium hydroxide aqueous solution is 4mol / L, and the rate of addition of the sodium hydroxide aqueous solution is 1mL / min, the dropping time is 10min;

[0053] 3) The mixture in step 2) was reacted in an autoclave at 160°C for 12h. After centrifugation, it was washed 3 times with distilled water and then 3 times with ethanol, and dried at 80°C for 12h to obtain 0.42g of ZnO / TiO 2 Composite powder.

[0054] The prepared ZnO / TiO 2 The composite powder is scanned by an electron microscope to obtain an electron microscope scanning photo, such as figure 1 , figure 2 As shown, the prepared ZnO / TiO 2 The compo...

Embodiment 2

[0057] 1) Dissolve 0.002mol zinc acetate and 0.4g (0.001148mol) sodium dodecylbenzenesulfonate in ethanol, then add 0.004mol tetrabutyl titanate, and mix to obtain 10mL raw material solution;

[0058] 2) under stirring condition, in the raw material liquid in step 1), add dropwise the sodium hydroxide aqueous solution of 10mL, the concentration of sodium hydroxide in the sodium hydroxide aqueous solution is 4mol / L, and the rate of addition of the sodium hydroxide aqueous solution is 0.2 mL / min, the dropping time is 50min;

[0059] 3) The mixture in step 2) was reacted in an autoclave at 160°C for 12h, and after centrifugation, it was washed 3 times with distilled water and then 3 times with ethanol, and dried at 80°C for 12h to obtain 0.425g of ZnO / TiO 2 Composite powder.

[0060] It can be seen from the scanning electron microscope photo that the prepared ZnO / TiO 2 The composite powder is a rod-shaped particle with a diameter of 50nm to 150nm and a length of 1μm to 1.5μm. T...

Embodiment 3

[0062] 1) Dissolve 0.002mol zinc acetate and 0.4g (0.001148mol) sodium dodecylbenzenesulfonate in ethanol, then add 0.004mol tetrabutyl titanate, and mix to obtain 10mL raw material solution;

[0063] 2) under stirring condition, in the raw material liquid in step 1), add dropwise the sodium hydroxide aqueous solution of 10mL, the concentration of sodium hydroxide in the sodium hydroxide aqueous solution is 6mol / L, and the rate of addition of the sodium hydroxide aqueous solution is 1mL / min, the dropping time is 10min;

[0064] 3) The mixture in step 2) was reacted in an autoclave at 160°C for 12h, and after centrifugation, it was washed 3 times with distilled water and then 3 times with ethanol, and dried at 80°C for 12h to obtain 0.43g of ZnO / TiO 2 Composite powder.

[0065] It can be seen from the scanning electron microscope photo that the prepared ZnO / TiO 2 The composite powder is rod-shaped particles with a diameter of 80nm-200nm and a length of 1.2μm-2μm.

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Abstract

The invention discloses a preparation method and application of ZnO / TiO2 composite powder. The preparation method comprises the following steps: dissolving soluble a zinc salt, a surfactant and butyl titanate in alcohol, and mixing to obtain a raw material liquid; adding a strong base aqueous solution to the raw material liquid under the stirring condition to obtain a mixed liquid; and reacting the mixed liquid at 120-180 DEG C for 8-16h, washing and drying to obtain the ZnO / TiO2 composite powder. The preparation method is relatively low in temperature conditions, good in controllability, simple in preparation and strong in operability, is favorable to industrialized popularization and production, and has wide application prospects. The obtained ZnO / TiO2 composite powder is complete in crystallization, small in original granularity, uniform in distribution and low in agglomeration, and is particularly suitable to be used as an additive for an automobile paint to be applied to the automobile paint, so that the automobile finish coat has the advantages of being plump in lacquer film, level and bright, strong in adhesion force, high in hardness, good in light retention rate, excellent in natural solarization performance and the like.

Description

technical field [0001] The present invention relates to ZnO / TiO 2 The preparation and application field of composite powder, specifically related to a kind of ZnO / TiO 2 Preparation method of composite powder and ZnO / TiO 2 Application of composite powder. Background technique [0002] The car is exposed to various harsh environments for a long time. The surface of the car is prone to aging, corrosion, full of bacteria, scratches or damage by gravel. These are the challenges faced by the car during its use. Coating, as the exterior of the car, plays a vital role in the use of the car, but it is difficult for traditional car coatings to fully meet the complex and harsh environment in which the car is used. [0003] Nanoparticles have attracted more and more attention from researchers due to their unique physical, chemical, photoelectrochemical, and photocatalytic properties, and have gradually developed into a new science that is interdisciplinary and comprehensive. Studie...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D133/00C09D167/00C09D161/20C09D5/32C09D5/14
Inventor 孙芬芬蔡孝回金楷韦兴民赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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