Anatase/brookite complex-phase titanium dioxide ultraviolet shielding agent and preparation method thereof

An ultraviolet shielding agent, titanium dioxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, nanotechnology, etc., can solve the problems of different crystal TiO2 ultraviolet shielding performance reports, insufficient ultraviolet absorption capacity, large amount of organic solvent, etc. Excellent UV shielding effect, achieving nanometer control, and the effect of no calcination
CN110697769AInactive Publication Date: 2020-01-17JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2020-01-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an anatase / brookite complex-phase titanium dioxide ultraviolet shielding agent and a preparation method thereof, and belongs to the technical field of novel inorganic materials. According to the invention, the ultraviolet shielding performances of different phases of titanium dioxide are fully utilized, and in a hydrothermal synthesis system of titanium alkoxide, the anatase / brookite complex-phase titanium dioxide ultraviolet shielding material is prepared by using cheap inorganic sodium salt as a crystal form guiding agent, so that the defects of poor light scatteringand poor reflection of the anatase type titanium dioxide ultraviolet region are overcome, and the visible light transmission effect of the composite shielding agent is guaranteed; with the method, the ratio of the anatase type TiO2 to the brookite type TiO2 in the complex-phase shielding agent can be controlled by adjusting the dosage of the crystal form guiding agent, so that the working performances of the shielding agent in UVA and UVB sections can be adjusted as required; and the grain growth of TiO2 can be inhibited by utilizing the interaction between different crystalline phase grainsof the complex-phase TiO2 so as to successfully achieve the nanocrystallization control of TiO2, so that the excellent performance of the obtained ultraviolet shielding agent is guaranteed.
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Description

technical field

[0001] The invention relates to an anatase / brookite multiphase titanium dioxide ultraviolet shielding agent and a preparation method thereof, belonging to the technical field of novel inorganic ultraviolet shielding materials. Background technique

[0002] According to the wavelength of sunlight, it is generally divided into three bands, UVC (200-280nm), UVB (280-320nm), and UVA (320-400nm). Among them, UVB and UVA are more harmful to human health, and long-term ultraviolet light will also rapidly degrade the strength and color of textiles and polymer coatings. Therefore, the preparation of polymer materials and clothing for outdoor use all need the protection of ultraviolet shielding agents. UV shielding agents can be divided into inorganic and organic UV shielding agents. Common inorganic UV shielding materials mainly include metal oxides (titanium dioxide, zinc oxide, tin oxide, cerium oxide), carbon black, and talcum powder. Compared with other UV inhib...

Claims

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