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Surface treatment method of nano-sized titanium dioxide

A nano-titanium dioxide and surface treatment technology, applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, nanotechnology, etc., can solve problems such as difficult industrial production, difficult control process, and complicated process, and achieve good stability, Simple process, good dispersion effect

Inactive Publication Date: 2017-09-01
LIUZHOU BOZE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of this treatment method is more complicated, the control process is difficult, the cost is higher, and it is difficult to realize industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A surface treatment method for nano titanium dioxide, comprising the following steps:

[0023] (1) Transport the nano-titanium dioxide to the surface treatment tank, then add barium stearate dispersant and water, control the temperature at 60°C, stir at a speed of 300r / min for 30min, and obtain a nano-titanium dioxide dispersion with a mass concentration of 20%; The add-on of described barium stearate dispersant is 1.5% of nano titanium dioxide weight

[0024] (2) Add the above-mentioned nano-titanium dioxide dispersion into an ultrasonic generator, then add sodium ricinoleic acid methyl sulfate and sodium tripolyphosphate composite modifier, and ultrasonicate for 40 minutes at a temperature of 60°C and a frequency of 60KHz to obtain a modified nano-titanium dioxide Titanium dioxide liquid; described sodium ricinoleate methyl sulfate and sodium tripolyphosphate mass ratio are 3:1, and the add-on of modifier is 2% of nanometer titanium dioxide weight;

[0025] (3) Filte...

Embodiment 2

[0027] A surface treatment method for nano titanium dioxide, comprising the following steps:

[0028] (1) Transport the nano-titanium dioxide to the surface treatment tank, then add barium stearate dispersant and water, control the temperature at 70°C, stir at a speed of 150r / min for 25min, and obtain a nano-titanium dioxide dispersion with a mass concentration of 18%; The add-on of described barium stearate dispersant is 1.0% of nano titanium dioxide weight

[0029] (2) Add the above-mentioned nano-titanium dioxide dispersion into an ultrasonic generator, then add sodium ricinoleic acid ethyl sulfate and sodium tripolyphosphate composite modifier, and ultrasonicate for 30 minutes at a temperature of 70°C and a frequency of 70KHz to obtain a modified nano-titanium dioxide Titanium dioxide liquid; described sodium ricinoleic acid ethyl sulfate and sodium tripolyphosphate mass ratio are 4:1, and the add-on of modifying agent is 2.5% of nano titanium dioxide weight;

[0030] (3)...

Embodiment 3

[0032] A surface treatment method for nano titanium dioxide, comprising the following steps:

[0033] (1) Transport the nano-titanium dioxide to the surface treatment tank, then add barium stearate dispersant and water, control the temperature at 80°C, stir at a speed of 100r / min for 30min, and obtain a nano-titanium dioxide dispersion with a mass concentration of 15%; The add-on of described barium stearate dispersant is 2.0% of nano titanium dioxide weight

[0034] (2) Add the above-mentioned nano-titanium dioxide dispersion into an ultrasonic generator, then add sodium ricinoleic acid butyl sulfate and sodium tripolyphosphate composite modifier, and ultrasonicate for 20 minutes at a temperature of 80°C and a frequency of 80KHz to obtain a modified nano-titanium dioxide Titanium dioxide liquid; the mass ratio of sodium butyl ricinoleate and sodium tripolyphosphate is 3:1, and the add-on of modifying agent is 3.0% of nano titanium dioxide weight;

[0035] (3) Filter the modi...

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PUM

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Abstract

The invention discloses a surface treatment method of nano-sized titanium dioxide. The surface treatment method comprises the following steps: conveying nano-sized titanium dioxide into a surface treatment tank, then adding a barium stearate dispersant and water, controlling the temperature to be 60-80 DEG C, and stirring for 20-30 min at the rotating speed of 100-300 r / min to obtain a nano-sized titanium dioxide dispersion; adding the nano-sized titanium dioxide dispersion into an ultrasonic generator, then adding a sodium ricinoleate sulfate and sodium tripolyphosphate compound modifier, and performing ultrasonic treatment for 20-40 min at the temperature of 60-80 DEG C and the frequency of 60-80 Hz to obtain a modified nano-sized titanium dioxide solution; and filtering, drying, crushing and sieving the modified nano-sized titanium dioxide solution to complete modification of nano-sized titanium dioxide. Nano-sized titanium dioxide obtained after surface treatment by the surface treatment method is not only high in dispersion, high in stability and high in compatibility with an organic matter, but also can improve the light resistance and the weather resistance of titanium dioxide.

Description

technical field [0001] The invention relates to the technical field of inorganic material modification, in particular to a surface treatment method of nano titanium dioxide. Background technique [0002] Nano-titanium dioxide is a new type of inorganic functional material, which is widely used in the fields of shielding ultraviolet rays, color-dependent coatings, photoelectric conversion, and photocatalysis. Titanium dioxide is an N-type semiconductor. When ultraviolet light with a wavelength of less than 400nm irradiates titanium dioxide, electrons in the valence band can absorb ultraviolet light and be excited to the conduction band, while generating electron-hole pairs, and some electron-hole pairs will migrate. to the surface, resulting in hydroxyl radicals and adsorbed water on the surface of titanium dioxide to generate hydroxyl radicals, which have a strong oxidizing ability and will oxidize and decompose the organic matter around them. Due to the small particle size...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/04C09C3/06C09C3/08B82Y40/00
CPCC09C1/3615B82Y40/00C09C3/006C09C3/04C09C3/06C09C3/08
Inventor 不公告发明人
Owner LIUZHOU BOZE SCI & TECH
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