Suntherm ceramic fiberboard is heated to a specified temperature without external force, and kept for a certain period of time. After cooling to normal temperature, the residual linear expansion or contraction.
The shrinkage of the heating wire of ceramic fiber is meaningless for a single fiber. It is only related to ceramic fiber products, and is directly related to fiber crystallization and grain growth. At the temperature before crystallization, the fiber still maintains its original Ceramic fiber products do not shrink when there is no obvious creep in the glass state. As the glass fibers begin to crystallize, individual fibers crimp, which in turn causes ceramic fiber products to shrink. Internationally, it is stipulated that the sample should be kept at a certain temperature for 24 hours, and the test temperature at which the shrinkage rate of the heating line does not exceed 2% is the allowable long-term use temperature of the ceramic fiber board. At this temperature, the crystal form of the glass fiber crystal and the polycrystalline crystal fiber change And the grain growth rate is slow, the fiber performance is stable, and the fiber is soft and elastic.
www.suntherm-industry.com
