Ceramic fiberboard is widely used in high-temperature applications due to its strength and durability. However, yellowing may occur over time, which can affect both its appearance and performance. Understanding the reasons behind this discoloration is essential for ensuring optimal use and maintenance.

Main Causes of Yellowing:

·Raw Material Composition:
The yellowing is often attributed to cross-linking agents and tackifiers present in neutral adhesives used in ceramic fiberboard. These components contain "amine groups," which are prone to oxidation and can lead to discoloration over time. Even high-quality imported glass adhesives may exhibit similar yellowing issues.

·Chemical Interactions:
When neutral transparent adhesives are used in conjunction with acidic glass adhesives, a chemical reaction may occur during the curing process, resulting in yellowing. This highlights the importance of selecting compatible materials in high-temperature applications.

·Storage and Substrate Reactions:

Prolonged storage or exposure to specific environmental conditions can accelerate the yellowing process. Additionally, reactions between the adhesive and the substrate may contribute to discoloration, particularly if the materials are not chemically compatible.

Conclusion:
While yellowing in ceramic fiberboard can stem from the inherent properties of raw materials or improper handling, it is crucial to implement proper maintenance and storage practices to mitigate these effects. Regular inspection and timely intervention can help preserve both the functionality and appearance of the material.

About Zibo Long Keter
Zibo Long Keter is a leading manufacturer specializing in high-quality ceramic fiber products. Our product range includes ceramic fiberboard, insulation boards for wall-hung furnaces, ceramic fiber profiles, composite blocks, ceramic fiber cotton, and refractory fiber blankets. Committed to integrity, innovation, and excellence, Zibo Long Keter has earned industry recognition for reliable products and exceptional customer service. We welcome clients and partners from around the world to collaborate and explore opportunities with us.