Jul 13 , 2025
Polycrystalline Fiber Blanket is an advanced high-temperature insulation material, manufactured from special ceramic fibers with an alumina content typically exceeding 70% or even 99% through a needling process. Compared to traditional ceramic fibers (like alumina-silica fibers), polycrystalline fiber blankets maintain superior performance at much higher temperatures and exhibit enhanced oxidation resistance, shrinkage resistance, and corrosion resistance. This makes them indispensable for insulation in extreme high-temperature industrial applications.
1. Ultra-High Temperature Industrial Furnace Linings:
o Application: Primarily used for the lining, furnace doors, roofs, and combustion chambers of various high-temperature industrial kilns and furnaces operating above 1300°C (2372∘F), and even up to 1700°C (3092∘F). Examples include glass melting furnaces, ceramic sintering kilns, steel reheating furnaces, petrochemical cracking furnaces, and monocrystalline/polycrystalline silicon production furnaces.
o Advantages: At these extreme temperatures, polycrystalline fiber blankets maintain structural integrity, resist powdering and shrinkage, and provide exceptional thermal insulation, significantly reducing energy consumption and extending lining life.
2. High-Temperature Equipment Insulation & Sealing:
o Application: Used as insulation infill in high-temperature pipes, equipment, and reactors. They can also be fabricated into high-temperature expansion joint gaskets or sealing materials for connections, furnace doors, and inspection ports.
o Advantages: Their softness, flexibility, and stability at high temperatures make them ideal for filling and sealing, effectively preventing heat leakage and improving overall equipment insulation.
3. Aerospace & Defense Applications:
o Application: Utilized as thermal protection layers and insulation systems for critical components in aircraft engines, rocket engines, and spacecraft.
o Advantages: Capable of withstanding extremely high temperatures and severe thermal shock, while also being lightweight, which is crucial for reducing aircraft weight and improving performance.
4. Catalyst Support & Filtration:
o Application: In certain high-temperature chemical reactors, polycrystalline fiber blankets can serve as catalyst carriers or high-temperature gas filtration media due to their thermal stability, porous structure, and chemical inertness.
o Advantages: Provides a stable operating platform, ensuring catalytic reaction efficiency or effective filtration.
Polycrystalline fiber blankets, with their outstanding performance in ultra-high temperature environments, address the limitations of traditional insulation materials. They are a critical component for industrial applications striving for ultimate heat resistance, high energy efficiency, and long service life.
