Ceramics have light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat, and resistance to mechanical vibration. They are widely used in petrochemical, metallurgy, electric power, aviation, aerospace, fire protection, home appliances, automobiles, ships and other fields. With the improvement of application technology, ceramic fibers are expanding new application fields. Then, let’s learn about the types and applications of ceramic fiber products!
Types of ceramic fiber products
Classification by microstructure morphology
Ceramic fiber products can be divided into glass-like fibers and crystalline fibers. The production of glass fiber adopts the technology of “resistance method blowing fiber and spinning”; the production of crystalline fiber adopts the technology of “colloid spinning and high temperature heat treatment”.
Ceramic fiber products can be divided into non-oxide ceramic fibers and oxide ceramic fibers such as SiC fibers and c fibers. Non-oxide ceramic fibers have high thermal conductivity, low thermal expansion coefficient, high strength and creep resistance, but have low high temperature oxidation resistance and are not suitable for high temperature oxidation environments.
According to use temperature
Ceramic fiber products can be divided into low-grade ceramic fiber, use temperature 800~1100, intermediate ceramic fiber, use temperature 1200~1300, ceramic fiber, use temperature 1300~1500.
Classification by material form
Ceramic fiber products can be divided into rose-shaped ceramic fibers, shaped ceramic fibers, amorphous ceramic fibers, and matched (spinning) ceramic fibers.
Application of ceramic fiber products
【Insulation and thermal insulation material】
Ceramic fiber products have good high temperature resistance, not only can withstand high temperature of 1500, but also have good heat insulation function, which is mainly determined by the mixed structure of ceramic fibers, that is, the composition of solid fibers and air. Ceramic fibers can well solve the problem of poor toughness of refractory materials. Due to the thermal insulation properties of ceramic fibers, ceramic fiber products are widely used in furnace walls and building materials of industrial furnaces.
Insulation cotton for ceramic fiber products
【High temperature filter material】
The ceramic fiber product has a large specific surface area, and the filter material prepared therefrom has a high filtration purity, and the ceramic fiber simultaneously exhibits better performance in terms of thermal stability, chemical stability and thermal shock resistance. Ceramic fibers are widely used in air purification, sewage treatment, flue gas filtration and other environmental fields.
Ceramic fiber filter ball
【Sound-absorbing and sound-insulating material】
Ceramic fiber materials have good sound absorption and sound insulation effects, and are widely used in construction, transportation and other fields. After the sound wave is transmitted to the inside of the material, the sound wave has a viscous effect with the air existing in the pores of the fiber, and at the same time, frictional resistance is generated between the sound wave and the fiber, and part of the lost sound energy is converted into heat energy. When the air in the fiber is compressed, heat conduction occurs, and the heat conduction loses the acoustic energy and absorbs the incoming sound waves.
【Catalyst carrier material】
Ceramic fiber has the advantages of large specific surface area, high porosity, and good catalytic effect. When the ceramic fiber loaded with catalyst is used to control the diffusion reaction, due to the small diffusion resistance, a good catalytic effect can be obtained. Ceramic fibers have great application potential in the field of catalysts.