Ceramic fiber blanket is recognized in the industry as a refractory material with excellent thermal insulation properties. Its thermal conductivity is only 0.086 at 400 degrees. Based on this, ceramic fiber blankets and modules and other derivative products are quickly accepted by high-temperature kilns and have application effects. In line with expectations.
So how is the thermal insulation performance of the ceramic fiber blanket realized?
Refractory fiber is mainly composed of solid phase and gas phase. Like other objects, these two phases also transfer heat through three methods: conduction, radiation and convection.
The solid phase refers to the fiber filaments in the ceramic fiber carpet. The interweaving between them basically has no directionality. The heat transfer path is tortuous, which greatly reduces the strength of the fiber solid phase heat conduction. This is one aspect. On the other hand, the contact between the filaments is mostly point contact, which makes the heat transfer between the solid phases more difficult.
The gas phase refers to the ceramic fiber blanket is interwoven with fiber filaments, the voids are filled with gas, and the porosity reaches 90%. Most gases, including air, are substances with low thermal conductivity and low heat capacity at rest. The hot air flow entering the fiber is separated and obstructed by a plurality of air holes, and is almost in a static state. Therefore, the airflow heat transfer in the ceramic fiber blanket is very small.
The above is the reason for the excellent thermal insulation performance of refractory fiber products such as ceramic fiber blanket.
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SHANDONG REDON HIGH-TEMPERATURE MATERIAL Co. ,LTD. has the domestic advanced production equipment and leading production technology, with an annual output of 1050 ceramic fiber series products, 1260 ceramic fiber series products, 1400 ceramic fiber series products, 1600 polycrystalline series products tens of thousands of tons. With cotton, blankets, blanket, board, paper and all kinds of textiles, special-shaped products, modules, folding, castable, spraying, etc. Various forms of more than 30 kinds of products, can meet the insulation requirements of high temperature field under different conditions, welcome to have a friend need to click the website lower right online customer service or submit online enquiry, we will contact you the first time.