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Nano light-screen zinc-cerium composite oxide and its preparing method

A composite oxide and nano-light technology, applied in nano-materials and fields, can solve the problems of affecting performance, deterioration of light transmittance, particle agglomeration size, etc., and achieve the effects of high absorption rate, loose powder and low material cost.

Inactive Publication Date: 2006-05-24
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are several limitations in the above preparation method: 1) the waste liquid generated in the process needs to be treated; 2) heat treatment can easily lead to particle agglomeration and size growth, and the specific surface area is small; 3) coating with silica usually leads to poor light transmission performance, The surface hydroxyl groups formed affect the performance

Method used

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  • Nano light-screen zinc-cerium composite oxide and its preparing method
  • Nano light-screen zinc-cerium composite oxide and its preparing method

Examples

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example 1

[0043] According to the zinc / cerium molar ratio = 0.1, dissolve zinc nitrate and cerium nitrate in deionized water at room temperature (such as 25 ° C), adjust the acidity to pH = 1 with a 30% nitric acid solution, and then press the nitrate : Fuel (molar ratio)=1:2 Add urea, obtain mixed solution after mechanical dispersion; Control inlet temperature is 80 ℃, dry air volume 300m 3 / h, material flow 2L / h, to obtain dry gel particles; gel particles in the air flow in the muffle furnace, controlled at 600 ° C, burned for 2 hours to obtain a body color of light yellow zinc cerium composite oxide; according to zinc cerium Composite oxide: methyl acrylate = 1:1, add 0.1% (volume) hydrogen peroxide, ultrasonically disperse for 60 minutes, at an inlet temperature of 110°C and a dry air volume of 100m 3 / h, material flow 1L / h, atomization to obtain coated zinc cerium composite oxide particle product, the average particle size of the particles is 5 nanometers.

[0044] attached figur...

example 2

[0046] According to the zinc / cerium molar ratio = 0.3, dissolve zinc nitrate and cerium nitrate in deionized water at room temperature (such as 25 ° C), adjust the acidity to pH = 2 with a 30% nitric acid solution, and then press the nitrate : Fuel (molar ratio)=1: 2.5 add carbama, obtain mixed solution after mechanical dispersion; Control entrance temperature is 85 ℃, dry air volume 200m 3 / h, material flow 1L / h, to obtain dry gel particles; gel particles in the air flow in the muffle furnace, controlled at 700 ° C, burning for 1 hour to obtain a body color of light yellow zinc-cerium composite oxide; according to zinc-cerium Composite oxide: methyl acrylate = 1:2, add 0.05% (volume) hydrogen peroxide, ultrasonically disperse for 10 minutes, at an inlet temperature of 120°C and a dry air volume of 200m 3 / h, material flow 1.5L / h, atomization to obtain coated zinc cerium composite oxide particle product, the average particle size of the particles is 30 nanometers. The XRD pat...

example 3

[0048] According to zinc / cerium molar ratio = 0.5, zinc nitrate and cerium nitrate are dissolved in deionized water at room temperature (such as 25 ° C), and the acidity is adjusted to pH = 3 with a 30% nitric acid solution, and then press the nitrate : Fuel (molar ratio) = 1: 2.5 Add dihydrazine oxalate to obtain a mixed solution after mechanical dispersion; control the inlet temperature to be 110°C, and the dry air volume to be 300m 3 / h, material flow 2L / h, obtain dry gel granule; Gel granule is in the air flow in the microwave oven, burns 1 hour and obtains the zinc cerium composite oxide that body color is pale yellow; Press zinc cerium composite oxide: Methyl acrylate = 1:1.5, add 2% (volume) hydrogen peroxide, ultrasonically disperse for 10 minutes, control the inlet temperature to 110°C, and dry air volume to 150m 3 / h, material flow 1L / h, atomization to obtain coated zinc cerium composite oxide particle product, the average particle size of the particles is 50 nanomete...

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Abstract

The invention relates to a nano light screen zinc cerium composite oxide and its preparing method, adopting water soluble salts of zinc and cerium, dissolving them in water in proportion, adding in fuel such as urea to form a uniform mixed solution; making primary hot air atomization by hot air and obtaining several micrometer-sized gel particles; firing in an electric cooker or microwave oven and obtaining loose zinc cerium composite oxide powder; mixing the powder with methyl acrylate monomers and initiator to form a suspended solution, then making secondary air atomization, and obtaining the nano zinc cerium composite powder with transparent coating. The polymers coated on the oxide particles have excellent chemical stability; the powder has high UV absorption ratio in the 190-400 nano wave band, and the visible lights can transmit the powder, and the powder has very low oxidation catalysis and can resist acid corrosion and is buff in appearance.

Description

【Technical field】 [0001] The invention relates to the field of nano-materials and technology, in particular to a new nano-zinc and cerium composite oxide and a surface treatment method for a transparent polymer layer thereof, that is, a method for preparing an ultraviolet-visible light screen nano-zinc-cerium composite oxide. 【Background technique】 [0002] The general method for preparing nano-zinc and cerium composite oxide can adopt the nitrate co-precipitation method of zinc and cerium. That is, zinc and cerium nitrates are dissolved in an aqueous solution according to a certain ratio, and then precipitated with sodium hydroxide, filtered and dried to obtain a doped powder. For the surface modification process of nano-separation, water-based silica is mostly used for coating treatment. [0003] There are several limitations in the above preparation method: 1) the waste liquid generated in the process needs to be treated; 2) heat treatment can easily lead to particle agg...

Claims

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Application Information

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IPC IPC(8): C01G9/02C01F17/00
Inventor 王达健李岚张晓松
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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