The ceramic fiber module is made of loose ceramic fibers that naturally settle on the mesh belt of the cotton collecting machine to form a uniform cotton blank, and then a binder-free needle-punched blanket is obtained through a needle-punched blanket making process, which is then folded and packaged. The thermal stability of the ceramic fiber module is closely related to the diameter, specific heat rate, density, etc. of the ceramic fiber.
Ceramic fiber is a fibrous lightweight refractory material. Due to its advantages such as light weight, high temperature resistance, good thermal stability, low thermal conductivity, low specific heat, and resistance to mechanical vibration, it is widely used in machinery, metallurgy, chemical industry, petroleum, ceramics, glass electronics and other industries.
The important indicators of ceramic fiber are the diameter and thermal stability of the fiber. Al2O3 and SiO2 fibers are commonly used in the ceramic industry. They are divided into different use ranges according to the content of Al2O3. Cr2O3 materials are also introduced to improve their refractory and antioxidant properties. Generally, fiber products with high aluminum oxide content and low impurity content such as iron oxide are pure white, and fibers with chromium oxide are green.
The diameter of ceramic fiber is generally 2~5pm, the length is mostly 30~250mm, and the fiber surface is smooth and cylindrical. The fiber is fine, low in density, and small in specific heat, and the use temperature is high. If the fiber is coarse and there are many slag balls, the use effect is not ideal.
The thermal stability index of ceramic fiber is more important. Al2O3 and SiO2 fiber products have a certain shrinkage range in the linear shrinkage range of 1260℃. The shrinkage also directly affects the thermal stability.
Due to the low thermal conductivity, low density and light weight of the fiber, a lighter steel frame support structure is used when designing and building the kiln, which makes the development of ceramic kilns enter the era of "kiln lightweight". The fiber has low heat storage and is suitable for rapid heating and cooling firing methods.
Ceramic fiber is flexible and can be processed into products with grooves or openings, and has good resistance to mechanical vibration and impact, and good chemical stability. These advantages have an important driving effect on the development of new kilns and the development of ceramic technology and industry.
