With the rapid development of economy, thermal insulation materials are of great significance to improve people’s working and living environment and save energy.
The realization of thermal insulation mainly depends on its heat transfer characteristics. Then the non gas with low thermal conductivity in nature (except hydrogen), which is a substance with low thermal conductivity and low thermal capacity at rest. The thermal conductivity of ceramic fibers is basically close to that of gas, because ceramic fibers are interwoven by solid fibers, filled with gas, and the porosity reaches 90%.
The heat transfer of ceramic fiber modules and other materials is affected by the following factors:
1. Effect of porosity
The thermal insulation material has a better porosity, i.e. bulk density, at each service temperature, and the thermal insulation effect is the best in this range. Therefore, the ceramic fiber module is divided into several grades according to the service temperature, and the density is adjusted accordingly in the range of 210-260 according to the service condition.
2. Influence of atmosphere
The low thermal conductivity of ceramic fiber module is based on most gases, but ceramic fiber products are not applicable if there are high heat gases such as hydrogen or helium in the environment.
3. Effect of bulk density
For ceramic fiber, to maintain low thermal conductivity, the better density of ceramic fiber products is less than 250kg / m3 and the porosity is more than 90%.
4. Directional influence
In the forming process of ceramic fiber blanket or ceramic fiber board, the length and width direction of area is the main direction. Moreover, the thermal conductivity of the front side of the fiber product is much smaller than that of the side. Therefore, in the application process, the back side of the fiber product is close to the furnace wall, and the front side is a high-temperature contact surface. The fiber product cannot be installed perpendicular to the furnace wall.
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Shandong redon high temperature materials Co., Ltd. has domestic high-end production equipment and reliable production technology, with an annual output of 1050 ceramic fiber series products, 1260 ceramic fiber series products, 1400 ceramic fiber series products and 1600 polycrystalline series products of more than 10000 tons. There are more than 30 kinds of products in different forms, such as cotton, blanket, felt, board, paper, various textiles, profiled products, modules, folding blocks, castables, spraying and so on, which can meet the heat insulation requirements of different situations in the high temperature field. Welcome to click the online service at the bottom right of the website or submit an online inquiry. We will contact you as soon as possible.