Application and performance of spherical alumina powder

The spherical alumina produced by the high-temperature melt blown method has the characteristics of high sphericity and high content of α-phase alumina. When used as a filler for rubber and plastics and a raw material for ceramics, it exhibits superior performance.

Spherical alumina Al2O3 powder characteristics

1. High filling

Spherical alumina has high sphericity and wide particle size distribution. It can be filled with high-density rubber and plastic to obtain a mixture with low viscosity and good fluidity.

2. High thermal conductivity

Since spherical alumina can be filled with high density, compared with crystalline silicon powder, a mixture of high thermal conductivity and good heat dissipation can be obtained.

3. Low wear

Because the spherical alumina has a spherical appearance, it greatly reduces the abrasion of the kneader, molding machine, mold and other equipment, and can extend the service life of the equipment.

Spherical alumina Al2O3 powder overview

Alumina is an inorganic substance with the chemical formula Al2O3. It is a high-hardness compound, also known as bauxite in mining, ceramics and materials science. It is a white solid, insoluble in water, odorless and tasteless, and very hard in nature. Alumina is a typical amphoteric oxide (corundum is alpha-shaped, which is the densest hexagonal compound. It is an inert compound, slightly soluble in acids and alkalis, and resistant to corrosion. [1] Soluble in inorganic acid and alkali solutions, almost insoluble in water and non-polar organic solvents; relative density (d204) 4.0; melting point 2050°C, boiling point 2980°C, high-temperature ionized ion crystal, often used to make refractory materials.

Industrial alumina is prepared from bauxite (alumina·3H2O) and diaspore.For alumina has high purity requirements, it is usually prepared by chemical methods.There are many different crystalline aluminas. There are more than 10 known crystals. There are three main crystal types, namely α-Al2O3, β-Al2O3, and γ-Al2O3. Among them, the structure is different and the nature is different. It almost completely transforms into α-Al2O3 at a high temperature above 1300℃. .

Spherical alumina Al2O3 powder characteristics: high filling density: large particle size, wide particle size distribution, high density filling of rubber and plastic can be realized, low viscosity, good fluidity rubber compound; high thermal conductivity: second to crystallization Compared with silicon oxide, the high packing density can make the thermal conductivity and heat dissipation rate of the composite higher;

Low wear resistance: due to its spherical shape, the kneader, molding machine and mold wear less.

Alumina is used to smelt high-quality bauxite to produce brown corundum, while high-quality aluminate is used to produce powdered corundum and white corundum. Their natural crystal structure makes them hard and tough. At the same time, they are often used as raw materials for fixed abrasive tools and coated abrasive tools. Alumina can be recycled many times, and the number of cycles is related to the grade of the material and the specific process. Most standard sandblasting equipment can be used.

Spherical alumina Al2O3 powder should be stored in a dry, cool and sealed environment, and should not be exposed to the air. In addition, avoid heavy pressure and transport as ordinary goods. It is equipped with double-layer plastic bags, which can be filled with argon under vacuum; it can be filled with argon under vacuum for protection. Vacuum packaging, 100G, 500G or 1KG/bag, 25kg/drum, or according to your requirements.

Spherical alumina Al2O3 powder application

1. Used as a ceramic material

Spherical alumina has good compression molding and sintering characteristics, which is extremely beneficial to the production of high-quality ceramic products.

2. As a grinding and polishing material

Use spherical alumina as a polishing abrasive to avoid scratches.

3. Used in the petrochemical industry

In the petrochemical industry, higher and higher requirements are put forward for the pore size distribution and pore structure of the alumina carrier. Spherical alumina powder can control the pore size and distribution of the formed catalyst carrier particles by adjusting the particle size configuration.

4. Used for catalyst

Spherical alumina is directly used as a catalyst, which can reduce abrasion and increase the service life of the catalyst, thereby reducing production costs.

5. Used for surface protective coating

Spherical alumina powder sprayed on metals, plastics, etc., can greatly improve surface hardness, corrosion resistance, wear resistance and fire resistance, and is used for surface protection of machinery, tools, and chemical pipelines.

6. Used for luminescent materials

Spherical alumina powder has a high packing density, which can reduce the scattering of the luminous body and effectively reduce the loss of transmitted light, thereby increasing the light transmittance.

7. Used in the electronics industry

Due to the excellent electrical, thermal and mechanical properties of spherical alumina, it is widely used in the field of semiconductor electronic packaging.

Price of spherical alumina Al2O3 powder

The price of spherical alumina Al2O3 powder will vary randomly with the production cost, transportation cost, international situation, exchange rate, market supply and demand for spherical alumina alumina powder. Tanki New Materials Co.,Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for spherical alumina Al2O3 powder, please feel free to send an inquiry to get the latest price of spherical alumina Al2O3 powder.

Supplier of spherical alumina Al2O3 powder

As a global supplier of spherical alumina Al2O3 powder, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including boron carbide, aluminum carbide, titanium carbide, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.