Polycrystalline Alumina Continuous Long Fiber
LF-72: Aluminum oxide content is 72%, and the fiber texture is soft, which is beneficial for hand processing. After weaving and sewing, it can be made into insulation seals of different shapes, and can also be reinforced with hand resin based materials.
LF-80: With an alumina content of 80% and good fiber properties, it not only has good post processing ability but also can be used for a long time in high-temperature environments. It is suitable for producing various shapes of high-temperature fabrics, but also can form temperature resistant composite materials with resin and ceramics.
LF-85: With an aluminum oxide content of 85%, it can be used for a long time in a high-temperature environment of 1250 ° C without reducing its strength. It is suitable for the application of ceramic based composite materials. Its ceramic products have the best resistance to high-temperature thermal shock and thermal deformation, and can be used for a long time in high-temperature, aerobic, and steam environments.
LF-99: the oxidation retention content is 99%, suitable for Metal matrix composite applications, and the room temperature strength is the best. The 99% high aluminum content can effectively control the interface effect of materials and the reaction of active gold bending. The products are mainly high denier roving, and light and high strength Metal matrix composite products are produced by winding or laying methods.
performance | Unit | LF-72 | LF-80 | LF-85 | LF-99 |
chemical composition | Wt.% | 72Al2O3-28SiO2 | 80Al2O3-20SiO2 | 85Al2O3-15SiO2 | >99Al2O3 |
melting point | ℃ | 1800 | 1850 | 1850 | 2050 |
Continuous service temperature | ℃ | 1200 | 1250 | 1300 | 1000 |
Monofilament diameter | μm | 7-10 | 10-12 | 10-12 | 12-14 |
Tex/number of pieces | g/1000m | 60-90/400 100/500 | 115/500 | 150/500 | 160/500 |
Crystalline phase |
| γ-Al2O3 | γ-Al2O3+α-Al2O3 | α-Al2O3+Mullite | a-Al₂O₃ |
density | g/cm³ | 2.9 | 3.0 | 3.1 | 3.5 |
Tensile strength of monofilament (gauge length 25.4mm) | MPa | 1.9 | 2.0 | 2.2 | 2.6 |
Tensile modulus of monofilament | GPa | 184 | 215 | 235 | 330 |