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Preparation of A New Inorganic Material Nano Zinc Oxide

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Update time : 2020-07-08 13:54:43

What is nano zinc oxide?

Nano zinc oxide (ZnO) has a particle size range of 1-100 nm. It is a high-end, high-function fine inorganic product that exhibits many special properties, such as non-migration, fluorescence, and piezoelectricity. Absorption and scattering of ultraviolet light, etc., people can use their special properties in light, electricity, magnetism, sensitivity, etc., can produce gas sensors, phosphors, varistor, ultraviolet shielding materials, image recording materials, piezoelectric materials, pressure sensitive Resistance, high-efficiency catalysts, magnetic materials and plastic films, etc. The microscopic changes of nanomaterials make many people do not see the excellent properties of nanomaterials, but through practice, nano zinc oxide is now more and more widely used in rubber and other fields with its excellent properties.

Characteristics of Nano zinc oxide

The outstanding feature of nano-scale zinc oxide is that the product particles are nano-level, which has the dual characteristics of nano materials and traditional zinc oxide. Compared with traditional zinc oxide materials, it has a large specific surface area, high chemical activity, product fineness, chemical purity and particle shape can be continuously adjusted according to needs; it also has a photochemical effect and good UV shielding performance, and its UV shielding rate is as high as 98%; at the same time, it also has a series of unique features such as antibacterial and antibacterial, anti-odor and mildew.

 

Preparation of Nano zinc oxide

The preparation methods of zinc oxide are divided into three types: direct method, indirect method and wet chemical method. At present, many zinc oxides on the market are mostly direct or indirect products with particle size of micron level and small specific surface area. These properties greatly restrict their application fields and their performance in products.

Nano-zinc oxide uses wet chemical methods to prepare nano-scale ultra-fine activated zinc oxide, using various zinc-containing materials as raw materials, using acid leaching zinc, after multiple purification processes to remove impurities contained in the raw materials, and then precipitation to obtain basic carbonic acid Zinc, and finally nano-zinc oxide is obtained by roasting.

 

Application of Nano zinc oxide

Metal oxide powders such as zinc oxide, titanium dioxide, aluminum oxide and magnesium oxide, etc. When these powders are made into nanoscale, the size of the particles is equal to or smaller than that of the light wave, and the conduction band and valence band are caused by the size effect. The interval increases, so the light absorption is significantly enhanced. Various powders have different differences in light shielding and reflection efficiency. When comparing zinc oxide and titanium dioxide, when the wavelength is less than 350 nanometers (UVB), the shielding efficiency of the two is similar, but when 350~400nm (UVA), the shielding efficiency of zinc oxide is significantly higher than that of titanium dioxide. At the same time, the refractive index of zinc oxide (n=1.9) is lower than that of titanium dioxide (n=2.6), and the diffuse reflectance of light is low, which makes the fiber more transparent and conducive to textile dyeing.


Nano zinc oxide can also be used to make far infrared reflective fiber materials, commonly known as far infrared ceramic powder. This kind of far-infrared reflecting functional fiber absorbs the heat emitted by the human body and radiates far-infrared rays in a certain wavelength range to the human body. In addition to increasing the blood flow in the subcutaneous tissue of the human body and promoting blood circulation, it can also block infrared rays. Reduce heat loss, so the fiber heat storage and insulation compared with the general fiber.


Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional nano zinc oxide manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality nano zinc oxide, please feel free to contact us and send an inquiry.

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