Polycrystalline alumina fiber blanket is one of the new lightweight high-temperature heat insulation materials nowadays. It adopts the technological “sol gel” method to make soluble aluminum and silicon salts into a colloidal solution with definite viscosity. The solution is spun into fiber embryo after adjustment, and then transformed into alumina polycrystalline fiber through dehydration, drying, medium and high temperature heat treatment crystallization and other processes. Its main crystal phase is corundum phase and a large number of mullite phases.
Characteristics of polycrystalline alumina fiber blanket products:
Good high-temperature flexibility, excellent resistance to thermal shock and mechanical vibration
With small heating line changes
Low slag ball content, good fire resistance and insulation function
Excellent thermal reflection function
Low thermal storage and low thermal conductivity
Uniform fiber diameter and high tensile strength
Excellent high-temperature stability
Strong wind erosion resistance
Stable chemical function and strong corrosion resistance
Application of polycrystalline alumina fiber blanket products:
Electromagnetic shuttle kiln lining
Sealing gaskets for various low-temperature parts
Insulation lining for cracking furnaces, combustion furnaces, etc. in the kerosene chemical industry
Rapid firing kilns in the ceramic industry
Low temperature furnace linings for various casting furnaces, heating furnaces, heat treatment furnaces, thin slab continuous casting and rolling heating furnaces, silicon steel continuous annealing furnaces, stainless steel hydrogen/oxygen annealing lines, etc. in the steel and metallurgical industry ranging from 1250 ℃ to 1500 ℃
Sealing gasket for three-way converter in the automotive industry
Low temperature leak filling materials
Polycrystalline alumina fiber blankets are mainly aimed at cities such as Suzhou, Guangdong, Hebei, Chongqing, Zhejiang, and so on.
Thermal insulation material manufacturer, polycrystalline alumina fiber products, thermal insulation materials
