UV-shielding nano normal zinc titanate powder and process for preparing same

A zinc orthotitanate, ultraviolet technology, applied in chemical instruments and methods, zinc compounds, titanium compounds, etc., can solve the problems of unsatisfactory shielding effect and narrow ultraviolet wavelength range, and achieve the effect of low cost and improved dispersion.

Inactive Publication Date: 2006-12-27
SICHUAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to aim at single TiO 2 Or ZnO powder has a narrow range of UV shielding wavelengths, and the shielding effect is not ideal, and a nano-zinc orthotitanate (ZnO) with broad-spectrum UV resistance is prepared. 2 TiO 4 ) powder

Method used

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  • UV-shielding nano normal zinc titanate powder and process for preparing same
  • UV-shielding nano normal zinc titanate powder and process for preparing same
  • UV-shielding nano normal zinc titanate powder and process for preparing same

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[0017] 1. TiOSO 4 Preparation: Weigh an appropriate amount of industrial metatitanic acid, wash with dilute hydrochloric acid and ammonia solution to remove impurities in the metatitanic acid, put it into a beaker, add an appropriate amount of distilled water, and disperse evenly with ultrasonic waves. Slowly add a certain proportion of concentrated sulfuric acid, and heat at a constant temperature under stirring conditions, and react for 4 to 5 hours. At this point the white viscous solution became less thick and gradually cleared. Add activated carbon into the titanium liquid, stir for half an hour, and filter to remove the filter residue. get TiOSO 4 solution.

[0018] 2. TiOSO 4 and ZnSO 4 Preparation of mixed solution: ZnSO 4 Soluble in distilled water, according to Zn 2+ / Ti 4+ Molar ratio of 2:1 ratio and TiOSO 4 The solution is mixed.

[0019] 3. Preparation of Zn(OH) by coprecipitation 2 / TiO(OH) 2 Precursor: Add PEG400 to the mixed solution, the amount ad...

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Abstract

The invention discloses a new ultraviolet nanometer screening titanate zinc powder and preparing method; which is characterized by the following: adopting industrial metatitanate, zinc sulfate as raw material to prepare TiOSO4 solution; blending TiOSO4 and ZnSO4; adding surface activist PEG400; utilizing ammonia as sedimenting agent to adjust system pH value to generate priority sedimentation; filtering; washing; drying; grinding; sintering to obtain Zn2TiO4 powder. The invention provides pure Zn2TiO4 analyzed by XRD phase with 70 nm for TEM observing grain size, which screens ultraviolet effectively by over 95 percent.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and relates to nanometer zinc orthotitanate powder for shielding ultraviolet rays, and also relates to its preparation process. Background technique [0002] Excessive ultraviolet radiation will cause photochemical reactions and cause a series of changes in human body functions, especially causing harm to the skin, eyes and immune system of the human body. In addition, excessive ultraviolet rays will accelerate the aging process of buildings, paintings, sculptures, rubber and plastic products, making them hard, brittle and shortening their service life. Therefore, it is particularly important to study UV shielding agents. [0003] The ultraviolet shielding agents widely used in the world can be divided into two categories: one is organic ultraviolet shielding agents, which are customarily called ultraviolet absorbers, which can absorb ultraviolet light, especially ultraviolet ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00C01G9/00A61K8/29A61Q17/04
Inventor 张萍李哲赵子琪
Owner SICHUAN UNIV
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