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A kind of fluorosilane modified titanium dioxide nanomaterial and its preparation method and application

A technology of titanium dioxide and nanomaterials, applied in the field of nanomaterials, can solve problems such as difficulty in adapting to application requirements, and achieve the effects of excellent hydrophobicity, excellent high and low temperature resistance, and antibacterial and anti-ultraviolet rays.

Active Publication Date: 2016-06-08
FOSHAN NANHAI YILE ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the increasingly complex application environment, the requirements for surface treatment materials are also getting higher and higher. They need to be multi-functional and have excellent performance, otherwise it is difficult to adapt to higher and more complex application requirements.

Method used

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  • A kind of fluorosilane modified titanium dioxide nanomaterial and its preparation method and application
  • A kind of fluorosilane modified titanium dioxide nanomaterial and its preparation method and application

Examples

Experimental program
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Embodiment 1

[0028] The preparation method of the present embodiment fluorosilane modified titanium dioxide nanomaterials, its steps are as follows:

[0029] (1) Add 100g of ethyl titanate into 400g of absolute ethanol and stir to obtain mixed solution A;

[0030] (2) 200g of water, 360g of absolute ethanol, and 40g of glacial acetic acid were stirred and mixed to obtain mixed solution B;

[0031] (3) Slowly add the mixed solution B into the mixed solution A at a temperature of 35° C., dropwise add hydrochloric acid to adjust the pH value to 1, and stir for 1.5 hours to prepare a transparent titanium dioxide sol solution;

[0032] (4) Add 10 g of tridecafluorooctyltrimethoxysilane to the titanium dioxide sol solution, stir and react at 35° C. for 2 hours to obtain a transparent solution, and filter the reaction product to obtain fluorosilane-modified titanium dioxide nanomaterials.

Embodiment 2

[0034] The preparation method of the present embodiment fluorosilane modified titanium dioxide nanomaterials, its steps are as follows:

[0035] (1) Add 90g of propyl titanate to 500g of ethylene glycol and stir to obtain mixed solution A;

[0036] (2) 250g water, 700g ethylene glycol, and 100g nitric acid were stirred and mixed to obtain mixed solution B;

[0037] (3) Slowly add the mixed solution B to the mixed solution A at a temperature of 40° C., dropwise add hydrochloric acid to adjust the pH value to 2, and stir for 2 hours to prepare a transparent titanium dioxide sol solution;

[0038] (4) Add 10 g of tridecafluorooctyltriethoxysilane to the titanium dioxide sol solution, stir and react at 45° C. for 3 hours to obtain a transparent solution, and filter the reaction product to obtain fluorosilane-modified titanium dioxide nanomaterials.

Embodiment 3

[0040] The preparation method of the present embodiment fluorosilane modified titanium dioxide nanomaterials, its steps are as follows:

[0041] (1) Add 80g of butyl titanate into 600g of isopropanol and stir to obtain mixed solution A;

[0042] (2) Stir and mix 220g water, 450g isopropanol, and 80g hydrochloric acid to obtain mixed solution B;

[0043] (3) Slowly add the mixed solution B into the mixed solution A at a temperature of 45° C., dropwise add hydrochloric acid to adjust the pH value to 3, and stir for 3 hours to prepare a transparent titanium dioxide sol solution;

[0044] (4) Add 10 g of heptadecafluorodecyltrimethoxysilane to the titanium dioxide sol solution, stir and react at 50° C. for 4 hours to obtain a transparent solution, and filter the reaction product to obtain fluorosilane-modified titanium dioxide nanomaterials.

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Abstract

The invention discloses a fluorinated silane modified titanium dioxide nanometer material. The fluorinated silane modified titanium dioxide nanometer material is prepared by grafting modified alkyl silane on the surface of titanium dioxide; the reaction material adopts titanium alkoxide and fluorine modified alkyl silane with the mass ratio being (1-10):1. The invention further discloses a preparation method and application of the fluorinated silane modified titanium dioxide nanometer material. According to the method, fluorinated silane is successfully grafted on the surface of the nano-titanium dioxide through a chemical modification method; the obtained fluorinated silane modified titanium dioxide nanometer material has the advantages of small particle size, uniform distribution, good dispersion stability, wide application field and the like, and meanwhile, the material, serving as coating layer, also has a hydrophobic property, an oleophobic property, an anti-fingerprint property, an anti-fog property, an anti- bacteria property, an ultraviolet-proof property and other properties. The fluorinated silane modified titanium dioxide nanometer material is simple in production process, convenient to use, safe, environment-friendly, and suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a fluorosilane-modified titanium dioxide nanometer material and its preparation method and application. Background technique [0002] With the improvement of people's living standards, more and more people pay more and more attention to multifunctional materials, among which nano-titanium dioxide (TiO 2 ) is increasingly favored due to its bactericidal and self-cleaning properties. Nano-titanium dioxide has excellent properties such as high oxidation activity, strong bactericidal ability, and strong ultraviolet shielding ability, so it has been widely valued in the fields of wastewater degradation, elimination of harmful gases, sterilization, air purification, and production of UV-resistant coatings. [0003] However, nano-titanium dioxide has a large specific surface area, high surface energy, and is in a thermodynamically unstable state. The van der Waals force bet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/36C09C3/12
Inventor 黄剑文李彬诚
Owner FOSHAN NANHAI YILE ENG PLASTICS
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