Product description：
Alumina fiber needling blanket is made from alumina fiber prepared by sol-gel method through complicated needling process. Alumina fiber is composed of Al2O3 and SiO2, the internal structure of the fiber is dense, crystal type is stable, after acupuncture process, greatly improve the degree of interweaving between the fibers, has good delamination resistance, tensile strength and surface flatness, has better thermal insulation performance under high temperature conditions, can be used in more extreme environments for a long time.
Product feature：
Excellent thermal stability, excellent tensile strength
Thermal conductivity, low heat capacity
High thermal reflectivity, excellent corrosion resistance
Excellent thermal strength
Typical application:
High temperature heat insulation of steel and petrochemical
Fire shutter door, coal mine rescue capsule, coke furnace fire curtain
Aerogel insulation composite
High temperature insulation equipment, high temperature insulation pipeline
Industrial furnaces and heating units are lined with thermal insulation
High-temperature gasket
Module, folding block raw material
Technical parameters:
| Project | Test method | RDGW-72 | |||
| Chemical structure | Chemical analysis | 72:28 | |||
| Mineral structure | XRD | δ-Al203 γ-Al203 Mullite | |||
| Sorting temperature(℃) | GB/T 3003-2017 | 1600 | |||
| Pellet content(≥45 um) (%) | GB/T 5480-2017 | 0-2 | |||
| Firing loss rate(%) | GB/T 32179-2015 | 0.1 | |||
| Specific gravity(g/cm3) | GB/T 5071-2013 | 3.1 | |||
| Mean fiber diameter(μm) | GB/T 5480-2017 | 5.5-7.5 | |||
| Specific Heat Capacity(J/kg/K) | GB/T 19466.4-2016 | 1.17×103~1.21×103 | |||
| Linear shrinkage rate(%) | 1400℃x 24h | GB/T 17911 | ≤1 | ||
| 1650℃x 24h | ≤1 | ||||
| Thermal conductivity(W/mk) | 600℃ | GB/T 17911 | B.D.=100kg/m3
0.16 0.33 0.49 |
B.D.=130kg/m3
0.15 0.32 0.46 |
B.D.=150kg/m3
0.15 0.31 0.44 |
| 1000℃ | |||||
| 1200℃ | |||||
Product size specification table:
| Thickness（mm） | Bulk density（kg/m3） | Breadth（mm） | Length（m） | ||
| 100 | 130 | 150 | |||
| 7.5 | √ | √ | √ | 610 | 7.2/10.8/14.4 |
| 10 | √ | √ | √ | 610 | 7.2/10.8/14.4 |
| 12.5 | √ | √ | √ | 610 | 7.2/10.8/14.4 |
| 20 | √ | √ | – | 610 | 3.6/7.2 |
| 25 | √ | √ | – | 610 | 3.6/7.2 |
