Titanium dioxide nanocomposite material and its preparation method and application

Abstract

The invention discloses a titanium dioxide nanocomposite material and its preparation method and application. The titanium dioxide nanocomposite material includes TiO 2 Nanoparticles, TiO 2 Nanoparticles coated with ZrO 2 Inorganic layer forming TiO 2 @ZrO 2 A core-shell nanoparticle whose surface is modified with a surfactant. Its preparation method includes the preparation of TiO 2 @ZrO 2 Nanoparticles with a core-shell structure are mixed with a surfactant solution and subjected to jet milling to obtain a titanium dioxide nanocomposite material. The titanium dioxide nanocomposite material of the invention has the advantages of high whiteness, good weather resistance, good dispersibility, strong ultraviolet absorption ability, etc., and its preparation method has the advantages of simple process, convenient operation, controllable reaction, and the like. The titanium dioxide nanocomposite material of the present invention is suitable for cosmetics or wood surface anti-fading emulsions in water-based systems, can be widely used in the fields of cosmetics and wood, and has good application value and application range.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite materials, and in particular relates to a titanium dioxide nanocomposite material, its preparation method and its application in cosmetics or wood. Background technique [0002] Nano-TiO 2 Due to its excellent chemical stability, thermal stability, high refractive index, gloss and photocatalytic activity, strong whiteness, hiding power and coloring power, good dispersibility and weather resistance, and non-toxic, tasteless and non-toxic Irritant, also has the function of sterilization and deodorization, it is widely used in the field of cosmetics, and has the effect of beauty, whitening and sun protection. Excellent UV absorber. Nano-TiO 2 The anti-ultraviolet ability and its mechanism are related to its particle size: when the particle size is small, it can absorb ultraviolet rays, especially ultraviolet rays (280-320nm) in the mid-wave region for sun protection or anti-fading; when the ...

AI Technical Summary

Problems solved by technology

However, the Al 2 o 3 , SiO 2 , FeCl 3 and other inorganic materials coated TiO 2 , it is easy to make TiO 2 The particle color is red, the whiteness is reduced, and the TiO2 cannot be effectively improved 2 Dispersion in organic media of cosmetics or wood surface anti-fading emulsions, while organic materials such as polymethyl methacrylate are coated with TiO 2 When used, only a single-layer coating can be formed, and a dense coating layer cannot be formed, and the photochemical activity cannot be effectively improved. The organic coating film in the anti-fading emulsion on the surface of cosmetics or wood is still easy to powder

In addition, in the prior art, by adding oxidative inorganic waterproof components and organic waterproof components such as polyurethane, the nano-TiO 2 surface properties, thereby preparing modified nano-titanium dioxide with good hydrophobic effect, but the inorganic component in this prior art is AlN 3 , V 2 o 5 , SiO 2 and other additives, with TiO 2 There is a large difference in the refractive index, and the whiteness of the skin cannot be made natural when added to cosmetics. At the same time, it is difficult to fully mix various ingredients by stirring and grinding.

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