1. application field

Alumina fiber is widely used in many fields such as national defense, aerospace, thermal engineering, and power transmission. In the aerospace field, continuous alumina fiber is used to make large-area insulation, high-temperature wave transmission, engine combustion chambers and other components. In the thermal field, it can be used to make high-temperature furnace curtains, substrates, and high-temperature sealing gaskets.

2. technical characteristics

Based on a completely independent technical route, the engineered preparation of alumina fiber was realized early in China, and all raw materials and equipment were localized. The fiber performance indicators are close to similar foreign products, leading the country.

3. performance Index

Alumina fiber loose cotton: Alumina content of 72 wt %, silica content of 28 wt %, diameter of 3-5 microns, slag ball content of <2%; alumina fiber chopped fiber: alumina content of 72 wt %, silicon oxide content of 28 wt %, diameter of 10-12 microns, monofilament strength>1.6GPa, fiber length can be adjusted according to user needs, slag ball content: none; continuous alumina fiber: Alumina content of 72 wt %, silicon oxide content of 28 wt %, continuous length of>500 meters, diameter of 10-12 microns, monofilament strength of>1.7GPa;

4. current state

The research team has built an engineering development line for three types of alumina fiber products in Jiading District, Shanghai, delivering hundreds of kilograms of products to the outside world, establishing fiber preparation and inspection specifications, and incorporating them into quality system management. Application evaluations have been carried out in many fields of aviation and aerospace.