Polycrystalline alumina fiber cotton series is prepared by the sol gel method, which has the excellent characteristics of small bulk density, low thermal conductivity, thermal shock stability, high service temperature, etc. It is widely used in metallurgy, building materials, ceramics, aerospace and military industries and other fields.
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Product Introduction
The polycrystalline alumina fiber prepared by sol-gel method is characterized by low volume weight, low thermal conductivity, good thermal shock resistance, high service temperature, good chemical stability and good corrosion resistance, etc. It is widely applied in metallurgy, building materials, ceramics, and aerospace industries.
Product specification
Product brand | A-95 | A-80 | A-72 | |
chemical composition，% | A1203 | 95 | 79-81 | 71-73 |
| Si02 | ≤5 | 21-19 | 29-27 |
| A1203 Si02 | >99.5 | >99.5 | >99.5 |
Fiber length | 20-100 | |||
Average single fiber tensile strength | 500 | 800 | 800 | |
Average diameter | 3.7 | 3.9 | 4 | |
Slag-ball content | ≤1 | ≤1 | ≤1 | |
Max.service temperature | 1700 | 1700 | 1600 | |
Packaging specification | Carton,NW 3kg /box | |||
Application:
1. Made into fiber insulating felt/board or special shaped fiber products used in furnaces with service temperature above 1 400 ℃
2. Filling materials in expansion joints or short-term insulating patch
3.Reinforcing materials of piston, brake block or other alloy composites
4.Heat insulating layer of rocket motor or other insulating materials in aerospace industry
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