A highly transparent doped metal oxide dispersion that absorbs ultraviolet rays in a full band and its preparation method

An oxide and ultraviolet technology, applied in chemical instruments and methods, dyeing organosilicon compound treatment, inorganic pigment treatment, etc., can solve few problems, and achieve the effect of simple operation, broad application prospects and mild conditions

Active Publication Date: 2016-07-06
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently involved in the preparation of Fe, Co, Ni, Mn, Cu, Cd doped metal oxides (TiO 2 , CeO 2 , ZnO) (doping mole percentage is 1~25%) reports of highly transparent dispersions have not been found, and the highly transparent doped metal oxide dispersion prepared by the present invention is mainly used in transparent optical grade devices or materials, It is used to block the full-band 100-400nm ultraviolet rays, and there are few reports on the application and research in this area

Method used

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  • A highly transparent doped metal oxide dispersion that absorbs ultraviolet rays in a full band and its preparation method
  • A highly transparent doped metal oxide dispersion that absorbs ultraviolet rays in a full band and its preparation method

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Effect test

Embodiment 1

[0025] Embodiment 1: take by weighing 12.28gCe (NO 3 ) 3 ·6H 2 O and 0.12gFe(NO 3 ) 2 ·6H 2 Dissolve O in 40mL of ethanol, add 0.1mol / L NaOH ethanol solution to the above metal salt solution, and mix well, adjust the reaction temperature at 40°C, adjust the pH to 7, add 0.243g of vinyltriacetoxysilane, After fully reacting, the reaction solution was cooled to room temperature and then transferred to an autoclave at a controlled temperature of 120°C; the product was washed with deionized water and ethanol, dried and dispersed in water to obtain a highly transparent doped product with a solid content of 20wt%. Miscellaneous CeO 2 The dispersion has a light transmittance of 0.1% in the ultraviolet band of 100-400nm.

Embodiment 2

[0026] Embodiment 2: Weigh 7.11gTiCl 4 and 0.495gMnCl 2 4H 2Dissolve O in 40mL ethanol, add 0.5mol / L NaOH ethanol solution to the above metal salt solution, and mix well, adjust the reaction temperature at 60°C, adjust the pH to 9, add 0.60g 3-glycidyl ether oxypropyl trimethyl Oxysilane, after fully reacting, the reaction solution was cooled to room temperature, and transferred to an autoclave, the temperature was controlled at 140°C; the product was washed with deionized water and ethanol, dried and dispersed in ethyl acetate to obtain a solid Highly transparent doped TiO with a content of 20% 2 The dispersion has a light transmittance of 0.6% in the ultraviolet band of 100-400nm.

Embodiment 3

[0027] Embodiment 3: take by weighing 7.67gZn (CH 3 COO) 2 2H 2 O and 1.25gCo(CH 3 COO) 2 4H 2 Dissolve O in 40mL ethanol, add 0.3mol / L NaOH ethanol solution to the above metal salt solution, and mix well, adjust the reaction temperature at 50°C, adjust the pH to 8, add 1.25g n-octyltrimethoxysilane, After fully reacting, the reaction solution was cooled to room temperature and then transferred to an autoclave at a controlled temperature of 100°C; the product was washed with deionized water and ethanol, dried and dispersed in ethanol to obtain a highly transparent product with a solid content of 40%. The ZnO-doped dispersion has a light transmittance of 0.5% in the ultraviolet band of 100-400nm.

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Abstract

The invention relates to a highly-transparent metal oxide-doped dispersion capable of absorbing ultraviolet ray at full waveband and a preparation method thereof. The highly-transparent metal oxide-doped dispersion comprises the metal oxide-doped nanoparticles with surface modified by a surfactant, and a disperse medium, wherein the metal oxide-doped nanoparticle is 10-60wt%, the disperse medium is 25-90wt% and the surfactant is 0-15wt%; and the particle size distribution of the metal oxide-doped nanoparticles is narrow, and the particle size of the particles is 1-10nm. The preparation method comprises the following steps: an aqueous alkali is reacted with metal salt and doping element salting liquid and then deposited to obtain a precursor mixture of hydroxide, then transferred to an autoclave, a reaction condition is controlled, and the product is washed, and subjected to phase inversion to obtain the highly-transparent metal oxide-doped dispersion. The highly-transparent metal oxide-doped dispersion can completely obstruct the ultraviolet ray at the wave bands of 100-400nm.

Description

technical field [0001] The invention belongs to the technical field of ultraviolet shielding materials, and in particular relates to a highly transparent doped metal oxide dispersion capable of absorbing full-band ultraviolet rays and a solvothermal preparation method thereof. Background technique [0002] Traditional inorganic UV shielding materials mainly include TiO 2 , ZnO, CeO 2 , CaC 2 、Al 2 o 3 and other metal compounds. Generally speaking, organic-inorganic nanocomposites with UV-shielding function can be obtained after compounding these inorganic UV-shielding materials with organic polymers, and have broad application prospects in the field of UV-shielding transparent devices or materials. In order to ensure the high transparency of the composite material, it is required that the inorganic nanoparticles have a sufficiently small particle size and have good dispersion in the organic polymer. However, due to the quantum size effect of nanoparticles, the ultravio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K9/06C08K3/22C08K3/30C08K3/28C09C3/06C09C3/12C09C1/00C09C1/36C09C1/04
Inventor 陈建峰李洁曾晓飞
Owner BEIJING UNIV OF CHEM TECH
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