Excellent high and low temperature resistance

α- The service temperature of Al₂O₃ Fibre is up to 1400℃-1800℃; After treatment with liquid nitrogen (- 196℃) for 24 hours, the strength did not decrease.

Acid and alkali resistance

Retention rate of fibre strength after soaking in 10% alkali solution for 24h: NaOH -- 40%; KOH--65%；NH₄OH--95%；The fibre strength retention rate after soaking in 10% acid solution for 24h: HCl-96%; H₂SO₄--95%;  HNO₃--96%;  H₃PO₄--95%。

Slag free ball

Our fibre are shot free (≥ 45 μ m), the fibre strength has been improved to a certain extent. At the same time, because the thermal insulation and fire resistance of the fiber are inversely proportional to the shot content, the lower the shot content, the higher the thermal insulation and fire resistance.

Excellent electrical insulation

The resistance of alumina fibre decreases with the increase of temperature. Above 600℃, the resistance tends to be constant. The dielectric constant and dielectric loss of alumina fibre are basically stable at high temperature and are suitable for high temperature wave transmission materials.

Excellent flexibility

Good flexibility: the fibre has high flexibility and is not easy to break in the process of acupuncture. It is a very suitable product for acupuncture.

Strong design

By adjusting chemical composition and heat treatment process, products with different properties can be obtained to meet different application needs.

   

Product Type		72-F
Chemical Composition AI2O3：SiO2（%）		72-75:25-28
Mineral Structure		δ-Al2O3  γ-Al2O3
Classification Temperature （℃）		1600
Molten Point（℃）		＞1800
Density（g/cm3）		3.1
Average Fibre Diameter（μm）		5.5-7.5
Shot Content（%）	≥45μm	0-2
Impurity（%）		＜0.5
Monofilament tensile strength （MPa）		≥1200
Monofilament tensile modulus（GPa）		≥100

The 72-F type alumina fibre has excellent flexibility and can be applied in the manufacturing of catalytic converter mat in the automotive industry, as well as in the reinforcement of metal based, ceramic based, and resin based composite materials, as well as various types of industrial high-temperature fields such as blankets and felt.