Alumina continuous fiber is made of alumina and silica as the main component, and is prepared by sol-gel process. It can be used for high temperature above 1000℃ for a long time. It can be woven into soft fabric like fiber rope and fiber cloth. It can also be used for making many kinds of composite materials, and the form is convenient and flexible. It is an emerging high-tech industry and a variety of materials urgently needed in high-tech fields such as aviation, aerospace and new weapons for national defense.
According to the different alumina content, our product models are divided into: AF17, AF18 and AF19.
| Performance | AF17 | AF18 | AF19 |
|---|---|---|---|
| Chemical composition (wt.%) | 72 Al₂O₃+28 SiO₂ | 85 Al₂O₃+15 SiO₂ | ≥99 Al₂O₃ |
| Crystalline phase | γ-Al₂O₃+Amorphous | α-Al₂O₃+Mullite | α-Al₂O₃ |
| Melting point (℃) | 1800 | 1800 | 2000 |
| Continuous use temperature (℃) | ≥1200 | ≥1300 | ≥1100 |
| Monofilament diameter (µm) | 9-12 | 11-14 | 11-14 |
| Density (g/cm³) | 3.0 | 3.4 | 3.9 |
| Tex (g/1000m) | 67 / 200 | 100 / 167 | 100 / 167 |
| Monofilament tensile strength (GPa) | ≥2.0 | ≥2.0 | ≥3.0 |
| Monofilament tensile modulus (GPa) | ≥170 | ≥240 | ≥330 |
| Dielectric constant @9.5GHz | 3.2 | 3.8 | 4.7 |
| Loss tangent @9.5GHz | 0.005 | 0.005 | 0.007 |