Indirect method zinc oxide is mainly used in rubber manufacturing, silicate industry, medicine and health, coloring materials, electronics and other fields.

Rubber manufacturing

A large part of the indirect method zinc oxide produced by industry is used in the rubber industry. Indirect method zinc oxide and stearic acid, as important reactants of rubber vulcanization, are one of the raw materials for rubber manufacturing. The mixture of zinc oxide and stearic acid by indirect method enhances the hardening degree of rubber. Indirect method zinc oxide is also an important additive for automobile tires. In addition to vulcanization, indirect method zinc oxide can greatly improve the heat conductivity of rubber, which contributes to the heat dissipation of tires and ensures driving safety. Indirect method zinc oxide additives also prevent the erosion of rubber by mold organisms or ultraviolet rays.

Silicate industry

Indirect method zinc oxide is an additive of cement, which can reduce the hardening time of cement and improve the waterproof performance of cement. In the manufacture of glass and ceramics, indirect method zinc oxide can be used as a flux to reduce the sintering temperature of glass and ceramics. Indirect method zinc oxide with aluminum, gallium and nitrogen has a transparency of 90% and can be used as a glass coating to reflect infrared as visible light passes through. The paint can be applied on the inside or outside of the window glass to achieve the effect of heat preservation or insulation.

Medicine and health

Indirect method zinc oxide has the functions of anti-odor and antibacterial, so it is often added to cotton fabric, rubber, food packaging and so on. The indirect method zinc oxide added to food not only has a certain antiseptic effect, but also can be used as a zinc source to supplement the necessary zinc for the human body. .

Indirect method zinc oxide can be used to improve skin health, such as baby powder, diaper rash ointment, zinc cream, anti-dandruff shampoo and preservatives. Indirect method zinc oxide mixed with about 0.5% iron oxide is called calamine, which makes calamine lotion for the treatment of acute itching skin diseases. Some sports bandages are also mixed with indirect method zinc oxide to prevent soft tissue damage during exercise.

Coloring material

Indirect method zinc oxide is called zinc white in pigments, and its transparency is between Lithopone and titanium dioxide. Chinese white is a special kind of zinc white, which is a kind of paint for painters. Compared with the traditional white lead, zinc white can last for a long time in the sun, it will not be polluted by sulfur air, and it is non-toxic and cheap.

Electronic field

Indirect method zinc oxide has a high band gap at room temperature, so it is often used to make laser diodes and light-emitting diodes. Compared with gallium nitride with high band gap, indirect method zinc oxide has larger exciton binding energy (about 60meV at room temperature), so the luminescence is higher. In addition, the stability of indirect method zinc oxide under high energy radiation and wet chemical corrosion is also an important reason for its application. Indirect method zinc oxide has been used in solar cells and liquid crystal displays.

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tags: Semiconductors semiconductor industry