Alumina Fiber Yarn

Features of Alumina Fiber Yarn

High Temperature Resistance:

Alumina fibers, made from aluminum oxide (Al2O3), retain their strength and stiffness even at extremely high temperatures, making them ideal for applications involving intense heat.

The service temperature of Al₂O₃ fiber is up to 1600°C, and while for mullite fiber it is up to 1400°C; After treatment with liquid nitrogen (- 196°C) for 24 hours, the strength did not decrease.

Excellent Thermal Stability:

Alumina fibers exhibit high thermal shock resistance, meaning they can withstand rapid temperature changes without fracturing or cracking.

High Tensile Strength and Modulus:

Alumina fibers possess high tensile strength and modulus, meaning they are resistant to stretching and deformation under stress.

Good Electrical Insulation:

Alumina fibers are excellent electrical insulators, preventing the flow of electricity and making them suitable for applications in electronics and electrical equipment.

Acid and alkali resistance:

Alumina fibers are resistant to corrosion from various chemicals and harsh environments, ensuring long-term durability.  Retention rate of fiber strength after soaking in 10% alkaline solution for 24 hours: NaOH -- 40%; KOH--65%; NH₄OH--95%; Retention rate of fiber strength after soaking in 10% acid solution for 24 hours: HCl -- 96%; H₂SO₄--95%; HNO₃--96%; H₃PO₄--95%.

Low Moisture Absorption:

Alumina fibers do not absorb moisture, preventing degradation and maintaining their properties in humid conditions.

Chemical Inertness:

Alumina fibers are chemically inert, meaning they do not react with other materials, making them suitable for a wide range of applications.

Lightweight and Flexible:

Despite their strength and durability, alumina fibers are lightweight and flexible, allowing them to be woven into fabrics and other forms.  At room temperature, alumina fiber can be bent 1400 times, After high temperature treatment at 1000 °C, it can still be bent for 60 times.

High Hardness and Wear Resistance:

Alumina fibers exhibit high hardness and wear resistance, making them suitable for applications where abrasion and friction are a concern.

Polycrystalline Structure:

Alumina fibers are often polycrystalline, meaning they are made up of many small crystals, which contributes to their strength and durability.

Thermal Shock Resistance:

Alumina fibers have good thermal shock resistance, meaning they can withstand sudden temperature changes without cracking or fracturing.

Applications of Alumina Fiber Yarn

• High-end Equipment Manufacturing: Due to its characteristics such as high strength, high modulus, high-temperature resistance, and oxidation resistance, it serves as a core material for manufacturing the new-generation high-end equipment.

• Composite Material Preparation: It can be used to produce composite materials with metals, resins, and ceramics, and is suitable for various extreme environments.

• Aerospace: As a material required by emerging high-tech industries, it has important applications in the aerospace field.

• Defense and Military Industry: It can be used for manufacturing high-tech materials in the defense field, such as new weapons.