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Modified titanium dioxide grain, super-hydrophilic transparent thin film and preparation method thereof

A titanium dioxide and transparent film technology, which is applied in epoxy resin coatings, dyed low-molecular organic compound treatment, fibrous fillers, etc., can solve problems such as lack of industrial application prospects, poor operability, and limited hydrophilicity. Achieve the effects of good application and industrialization prospects, easy access to reaction raw materials, and good UV resistance

Active Publication Date: 2012-01-11
YANGZHOU SPED CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, until now, titanium dioxide has been mainly used as a filler for hydrophobic materials, while its use in hydrophilic matrices (such as epoxy resins) has been neglected.
Titanium dioxide is a kind of hydrophilic particles with hydroxyl groups on the surface, but the hydrophilic ability provided by hydroxyl groups alone is very limited.
However, this method is not very operable and does not have the prospect of industrial application

Method used

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  • Modified titanium dioxide grain, super-hydrophilic transparent thin film and preparation method thereof
  • Modified titanium dioxide grain, super-hydrophilic transparent thin film and preparation method thereof
  • Modified titanium dioxide grain, super-hydrophilic transparent thin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Using a ball mill as a modification tool, add 1g of titanium dioxide particles to the ball mill jar, then add 1g of chloroacetic anhydride to the ball mill jar, add ball mill beads, seal the ball mill jar and fix it in the ball mill, and control the speed of the ball mill to 400 r / min , the ball milling time is 6h, take 1g of the particles prepared under this condition, add 25ml of water, continue the ball milling for 4h, and finally obtain carboxy-modified titanium dioxide particles.

[0026] Take 0.05 g of carboxy-modified titanium dioxide particles and disperse them in 1 g of epoxy resin (the epoxy resin has been dissolved in 10 g of ethanol under the conditions of heating and magnetic stirring) by ball milling to obtain a suspension with a concentration of 5 wt.%. The suspension was smeared on a glass slide and cured at 100°C for 3 hours to obtain a super-hydrophilic transparent film. The film is transparent in appearance, has the characteristics of certain UV prote...

Embodiment 2

[0028] Using a ball mill as a modification tool, add 1g of titanium dioxide particles to the ball mill jar, then add 1g of chloroacetic anhydride to the ball mill jar, add ball mill beads, seal the ball mill jar and fix it in the ball mill, and control the speed of the ball mill to 400 r / min , the ball milling time is 6h, take 1g of the particles prepared under this condition, add 25ml of water, continue the ball milling for 4h, and finally obtain carboxy-modified titanium dioxide particles.

[0029] Take 0.1 g of carboxy-modified titanium dioxide particles and disperse them in 1 g of epoxy resin (the epoxy resin has been dissolved in 10 g of ethanol under the conditions of heating and magnetic stirring) by ball milling to prepare a suspension with a concentration of 10 wt.%. The suspension was smeared on a glass slide and cured at 100°C for 3 hours to obtain a super-hydrophilic transparent film. The film is transparent in appearance, has the characteristics of certain UV prot...

Embodiment 3

[0031] Using a ball mill as a modification tool, add 1g of titanium dioxide particles to the ball mill jar, then add 1g of chloroacetic anhydride to the ball mill jar, add ball mill beads, seal the ball mill jar and fix it in the ball mill, and control the speed of the ball mill to 400 r / min , the ball milling time is 6h, take 1g of the particles prepared under this condition, add 25ml of water, continue the ball milling for 4h, and finally obtain carboxy-modified titanium dioxide particles.

[0032] Take 0.05 g of carboxy-modified titanium dioxide particles and disperse them in 1 g of epoxy resin (the epoxy resin has been dissolved in 10 g of ethanol under the conditions of heating and magnetic stirring) by ball milling to obtain a suspension with a concentration of 5 wt.%. The suspension was smeared on a glass slide and cured at 100°C for 3 hours to obtain a super-hydrophilic transparent film. The film is transparent in appearance, has the characteristics of certain UV prote...

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Abstract

The invention discloses modified titanium dioxide grain, a super-hydrophilic transparent thin film and a preparation method thereof. In the invention, a ball mill is used as a modification tool; chloroacetic anhydride is used as a modifier, is added into the titanium dioxide grain through a mechanical and chemical method and is bonded with a hydroxyl group on the surface of the titanium dioxide grain with a chemical bond through mechanical stirring, vibration and collision of ball milling of the ball mill; then the prepared grain is reacted with water in a high-energy ball mill so as to prepare the hydroxyl group-modified titanium dioxide grain; finally, the grain is added into polymer in a ball milling mode to prepare suspension; the suspension is coated on a glass slide and then thermal curing is performed to obtain the super-hydrophilic transparent thin film. The super-hydrophilic transparent thin film prepared by the invention has the advantages of superior wear resistance and heat resistance, high mechanical strength, high impact resistance capacity, optical performance, anti-ultraviolet capacity and convenience in cleaning.

Description

technical field [0001] The invention relates to a method for preparing titanium dioxide particles modified by chloroacetic anhydride, in particular to a method for preparing an easy-to-clean nano-hybrid coating (super-hydrophilic transparent film) by using modified titanium dioxide particles. Background technique [0002] Nano-titanium dioxide has great volume effect, surface effect, optical properties, and color effect, so it shows very superior characteristics in the fields of light, electricity, catalysis, and material filling. These characteristics at the interface of nano-titanium dioxide make titanium dioxide particles in many fields. It has potential application prospects, such as photocatalytic water splitting to produce hydrogen, sewage treatment, organic matter decomposition, preparation of superhydrophobic and self-cleaning coatings, reinforcement of polymer materials and anti-ultraviolet coatings, etc. (Marco Minella, Maria Giulia Faga , et al, Effect of Fluorina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/22C09C1/36C09C3/04C09C3/08C08L101/00C08L63/00C08L61/06C08J5/18C09D7/12C09D201/00C09D163/00C09D161/06
Inventor 秦敦忠
Owner YANGZHOU SPED CHEM
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