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How much does the density of ceramic fiber change in product quality?

Date:2019-02-22 14:46 | From:Zhengzhou Sunrise Refractory | Author:admin
In the thermal insulation material of ceramic fiber, most of the heat is conducted from the gas in the pore. At low temperatures, the specific heat capacity of all solids varies widely. Therefore, the thermal conductivity of the ceramic fiber insulation material is largely determined by the type of filling gas. 

The bulk density is a direct reflection of the porosity of the material. Because the thermal conductivity of the gas phase is usually smaller than the thermal conductivity of the solid phase, the thermal insulation material of the ceramic fiber has a large porosity and a small bulk density. In general, increasing the porosity or reducing the bulk density will result in a decrease in thermal conductivity.

All ceramic fiber insulation materials have a porous structure and are easily hygroscopic. If you like our products, please come and buy them quickly. If you want to know more information, please feel free to pay attention to our website, we sincerely look forward to your visit!
The specific heat capacity of the ceramic fiber insulation material is related to the calculation of the amount of heat (or heat) required for the insulation structure to cool and heat. In the low temperature engineering, if helium or hydrogen is filled, it can be used as a first-order approximation, so that the thermal conductivity of the thermal insulation material is commensurate with the thermal conductivity of these gases, and the thermal conductivity of both helium and hydrogen is relatively large. When the moisture content is more than 5%~10%, the moisture content after the moisture absorption of the material occupies the pore space of the department which is originally filled with air, causing the effective thermal conductivity to increase significantly.

The temperature has a direct influence on the thermal conductivity of various types of aluminum silicate fiber insulation materials, the temperature is improved, and the thermal conductivity of the material increases.

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