Time：2024-01-04 14:12:40
Product Introduction of Heat Insulation Board for High Temperature and High Heat Equipment
Ceramic fiber board is a refractory insulation material commonly used in high-temperature and high heat equipment, and is widely used. Its advantages include light bulk density, good thermal stability, high temperature resistance, low thermal conductivity, hard texture, sound insulation, resistance to mechanical vibration, electrical insulation, good chemical stability, and so on.
Ceramic fiber board is made from ceramic fiber loose cotton as raw material, added with adhesive, etc., and processed by wet vacuum forming process. The process is slightly more complex, so the price is also slightly higher. The finished ceramic fiber board is mainly used in fire insulation engineering.
Advantages of Heat Insulation Board for High Temperature and High Heat Equipment
Compared to ceramic fiber blankets, ceramic fiber boards are hard and durable materials with high density, strength, and resistance to airflow erosion. The surface fibers are not easy to peel off and can directly come into contact with flames. They are used in areas where fiber blankets cannot handle, such as flame baffles and furnace temperature zones.
Compared to refractory bricks, the prominent feature of ceramic fiber board is its light weight, which is only 1/4 of that of refractory bricks, effectively alleviating the load-bearing capacity of the furnace body; Furthermore, traditional refractory bricks have poor resistance to rapid cooling and heating, and are prone to cracking. This phenomenon does not exist for ceramic fiber boards with good thermal stability.
The main purpose of insulation is to reduce heat loss during transportation, save fuel, and ensure temperature. Insulation materials can be divided into coating type, winding type, filling type, pouring type, spraying type, etc. according to their performance and construction methods. Ceramic fiber board is a lightweight fire-resistant insulation material that has emerged in the past decade.
Thermal insulation performance of insulation boards for high-temperature and high heat equipment
To determine the insulation performance of a material, the following aspects should be considered:
1. Thermal conductivity: It is a parameter that reflects the thermal conductivity of insulation materials and is the main thermal physical property of insulation materials. The thermal conductivity of ceramic fiber board at 600 ° C is only 0.145w/(M.K).
2. Bulk density: Each insulation material has a reasonable bulk density, which has a smaller thermal conductivity and better insulation effect in this range. In order to save energy and reduce the load on insulation structures in engineering, insulation materials with low bulk density should be used as much as possible. The bulk density of ceramic fiber board is 280kg/m3, which is 1/4 of the lightweight fire-resistant conversion.
3. Operating temperature: refers to the temperature that insulation materials can withstand during long-term operation. The long-term use temperature of ceramic fiber board is between 850-1300 degrees, and it is a product with higher temperature resistance in insulation materials, except for mullite fibers.
4. Compressive strength: Ceramic fiber board belongs to semi hard insulation materials and generally will not be damaged when subjected to compressive loads.
5. Coefficient of linear expansion: If the coefficient of linear expansion of insulation materials is large, the internal deformation will generate significant stress after heating, which will damage the insulation structure. Unlike conventional insulation materials, ceramic fiber boards do not expand when heated, and there is no need to reserve expansion joints during use. They can be tightly compressed during installation.
6. Chemical properties: Different usage environments require insulation materials to have good chemical stability. Acid and alkali resistance, corrosion resistance, and resistance to oxidation, ceramic fiberboard can meet the requirements for use in this regard.
7. Insulation layer thickness: In order to reduce heat dissipation loss of insulation structures, the insulation material layer thickness should be based on the economic thickness
