Polyimide staple fiber, polyimide filament yarn, polyimide wadding filling cotton

Polyimide fiber (abbreviated as PI fiber), also known as aromatic imide fiber, is one of the organic polymer fibers with excellent comprehensive performance. Together with carbon fiber and aramid fiber, it is considered one of the three key polymer materials that restrict the development of high-tech industries in China. Due to its outstanding mechanical strength, electrical insulation performance and thermal stability, it is widely used in aerospace, military industry, automobile industry, electronics/electrical and textile and clothing fields.

-Excellent Functional Characteristics -

1, Resistance to high and low temperature performance:

The molecular chains of polyimide fibers have excellent cross-linking effects, which can form a compact structure, effectively block heat transfer, and have outstanding resistance to high and low temperatures. They can be used for a long time in the temperature range of -200℃ to 400℃ without brittleness or significant performance degradation.

2, Flame retardant performance:

Polyimide fibers have self-extinguishing properties, meaning once they leave the flame, the flame will be extinguished quickly and it is not easy to re-ignite. Its limiting oxygen index is high, which means it can only be ignited at a relatively high oxygen concentration, so it has excellent flame retardant performance.

3, Radiation resistance:

After being subjected to high-energy radiation (such as ultraviolet rays, electron beams, etc.), the performance of polyimide fibers remains stable. This performance gives it unique advantages in fields that require radiation resistance, such as nuclear energy industry and space environment.

4, High insulation performance:

Polyimide fibers have good electrical insulation performance, with a low dielectric constant that remains stable over a wide range. This makes it have broad application value as an insulating material in electrical equipment, wires and cables and other fields.

5, Corrosion resistance:

Polyimide fibers have excellent corrosion resistance to various chemical reagents, such as acids, alkalis, organic solvents, etc.

6, High strength and high modulus:

Polyimide fibers are characterized by high strength and high modulus, with a maximum strength of up to 5.8-6.3 GPa and a maximum modulus of up to 280-340 GPa. This performance makes it an ideal choice for manufacturing high-strength, high-modulus composite materials.

7, Good spinnability and dimensional stability:

Polyimide fibers have good spinnability, and can be conveniently spun into fiber products of various specifications. At the same time, it has good dimensional stability, and is not easy to change in size due to changes in external conditions such as temperature and humidity.

8, Low water absorption and unique cross-sectional structure:

Polyimide fibers have low water absorption, which enables them to maintain good performance even in humid environments. Its unique cross-sectional structure gives the fiber excellent performance in filter materials, especially an absolute advantage in high-temperature flue gas filter materials.

-Wide Application Fields -

1, Aerospace field:

Used in the manufacture of aerospace devices, structural systems for aircraft wings, seals, fuel pipes, etc. Due to its characteristics of high strength, low density, and aging resistance, polyimide fibers can meet the high requirements for materials in the aerospace field.

2, Special equipment field:

Used in the manufacture of special equipment wrapping materials, bulletproof vests, explosion-proof suits, protective clothing, etc., which can significantly improve survivability and combat effectiveness on the battlefield. It is also used in the manufacture of key components of special equipment such as special aircraft and tanks, to improve the performance and reliability of these special equipment.

3, Electronic industry field:

Used in the manufacture of electronic components, IC packaging materials, machine casings, etc. Due to its many advantages such as anti-thermal stability, temperature resistance, and low thermal expansion coefficient, it can effectively improve the service life and reliability of electronic products.

4, Special protection field:

Used in the manufacture of protective gear for harsh conditions such as high temperature and strong radiation, such as fire-retardant suits, heat insulation felts, flight suits, high-voltage protective suits, high-temperature-resistant special braided cables, etc. These protective products can protect personnel from harm in harsh environments such as high temperature and strong radiation, and improve work safety and efficiency.

5, Textile and clothing field:

Can be made into special work clothes, outdoor cold-proof clothes, thermal insulation batting, fleece jackets, etc., with excellent thermal insulation performance and comfort. In addition, polyimide fibers can also be used to make sports clothing, such as ski suits, mountaineering suits, etc., to meet the needs of athletes in extreme environments.

6, Automobile manufacturing field

Used in body structural materials, interior decoration materials, engine covers, etc. The use of polyimide fibers can reduce the overall weight of the automobile, and improve the driving stability and protective performance of the automobile.

7, High-temperature filtration field:

Used as filter materials for baghouse dust collectors in tail gas treatment of fields such as cement production, thermal power generation, metal smelting, and waste incineration. These fields usually produce high-temperature, highly corrosive tail gas, which requires high-performance filter materials for filtration and treatment. The high-temperature resistance and corrosion resistance of polyimide fibers make it an ideal choice for these fields.

8, Other fields:

It also has wide applications in fields such as nuclear energy industry, space environment, new construction, high-speed transportation, marine development, environmental protection, sports equipment, and new energy.