Ultrafine Active Zinc Oxide

Ultrafine active zinc oxide is a new type of multifunctional inorganic material with a particle size of about 1-100 nanometers. Due to the miniaturization of crystal grains, the surface electronic structure and crystal structure have changed, resulting in surface effects, volume effects, quantum size effects, macro tunnel effects, high transparency and high dispersion that are not available in macroscopic objects. In recent years, it has been discovered that it exhibits many special functions in catalysis, optics, magnetism, mechanics, etc., making it of important application value in many fields such as ceramics, chemical industry, electronics, optics, biology, medicine, etc. The particularity and use of comparison. Ultra-fine active zinc oxide can be used in the textile field for ultraviolet light shielding materials, antibacterial agents, fluorescent materials, photocatalytic materials, etc. Due to a series of superiority and very attractive application prospects of ultrafine active zinc oxide, the research and development of ultrafine active zinc oxide has become the focus of many scientific and technical personnel.

Ultra-fine active zinc oxide metal oxide powders such as zinc oxide, titanium dioxide, silicon dioxide, aluminum oxide and magnesium oxide, etc., when these powders are made into nanoscale, because the size of the particles is equivalent to or smaller than the light wave, due to the size The effect causes the gap between the conduction band and the valence band to increase, so the light absorption is significantly enhanced. Various powders have different differences in the shielding and reflection efficiency of light. 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 the wavelength is from 350 to 400 nm (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 less than that of titanium dioxide (n=2.6), and the diffuse reflectance of light is low, which makes the fiber transparency higher and facilitates the dyeing and finishing of textiles.

Ultrafine active zinc oxide can also be used to make far-infrared reflective fiber material, commonly known as far-infrared ceramic powder. This kind of far-infrared reflective fiber absorbs the heat emitted by the human body and then radiates far-infrared rays of a certain wavelength range to the human body. In addition to increasing the blood flow in the human subcutaneous tissue and promoting blood circulation, it can also shield infrared rays. Reduce heat loss, so the fiber is more heat-storing and heat preservation than ordinary fiber.

Product name: Zinc oxide, nanometer

Other name: Nano Zinc White; Zinc White nanometer

CAS RN.: 1314-13-2

Molecular formula: ZnO

Molecular weight: 81.37

Appearance: white fine powder

Relative density: 5.606

Melting point: 1975℃

Refractive index: 2.008～2.029

Average particle size<0.1um, specific surface area≥50㎡/g