Durable Polyimide Fiber Insulation for Extreme Heat Applications

• Customization: Available
• Usage: Spinning, Non-Woven Fabric
• Feature: Abrasion-Resistant, Flame Retardant, Heat-Resistant, Flame Retardant,High-Temperature Resistance
• Model NO.: KD-PI-02
• Fiber Type: Staple
• Pattern: Plain
• Color: Colorful/Customized
• Width: 58/60"
• Function: High Temperature Fiber
• Structure: Miscellaneous Chain Synthetic
• Transport Package: Carton
• Specification: as customer′ s
• Trademark: kaidun
• Origin: China
• HS Code: 401693100
• Production Capacity: 10000 Tons Per Year

Product Description

Product Description

Polyimide fiber is a high-performance synthetic fiber with numerous excellent properties and plays a crucial role in many high-tech and industrial fields.

Chemical Structure and Synthesis Methods

 

• Chemical Structure: The molecular main chain of polyimide fiber contains imide rings (-CO - NH - CO -), which is the key structure endowing it with special properties. The imide ring structure makes the molecular chains have relatively high rigidity and stability, enabling them to resist the influence of external factors such as high temperature and chemical corrosion.
• Synthesis Methods: It is mainly synthesized through a polycondensation reaction. Firstly, monomers such as diamines and dianhydrides react in an appropriate solvent to generate a polyamic acid (PAA) precursor. The reaction equation is usually: nH2N - R - NH2+ n(OC)2 - R' - (CO)2 → [HN - R - NH - CO - R' - CO]2 + 2nH2O (where R and R' represent different organic groups). Then, the polyamic acid undergoes a thermal imidization or chemical imidization process, losing water molecules to form polyimide fiber. This synthesis process can precisely control the molecular structure and properties of the fiber.

Performance Characteristics

 

• Outstanding High-Temperature Resistance: It can maintain stable performance in a high-temperature environment for a long time. Its long-term service temperature can reach 300 - 500 °C, and it can even withstand higher temperatures in a short period. For example, when used in components near aerospace engines, polyimide fiber can effectively resist the scouring of high-temperature gas and ensure the normal operation of the components.
• Excellent Mechanical Properties: It has relatively high tensile strength and modulus. The tensile strength is generally between 2 - 5 GPa, and the modulus is between 50 - 150 GPa. Meanwhile, it also has good fatigue resistance and toughness and can withstand repeated mechanical stresses such as tension and bending without being easily damaged. This gives polyimide fiber a great advantage in manufacturing high-strength ropes and reinforcement fibers for composite materials.
• Good Chemical Stability: It has a strong tolerance to most chemical substances such as acids, alkalis, and organic solvents. Whether in an acidic chemical environment or an alkaline electroplating solution environment, polyimide fiber can maintain the stability of its chemical structure and physical properties. Therefore, it can be used in many occasions with relatively strong chemical corrosiveness, such as chemical filtration and protective clothing.
• Good Flame Retardant Performance: Its Limiting Oxygen Index (LOI) is relatively high, generally around 30 - 40, and it has self-extinguishing properties. When encountering a fire source, polyimide fiber will not burn violently like ordinary fibers but will form a carbonized layer to prevent the spread of the flame, thus playing a flame-retardant role.
• Good Electrical Insulation Properties: Polyimide fiber is a good electrical insulation material with high volume resistivity and a moderate dielectric constant. In the electronics and electrical appliance fields, it can be used for the insulation layer of electric wires and cables, the insulation material of circuit boards, etc., and can effectively prevent current leakage and short-circuit phenomena.

Application Fields

 

• Aerospace Field: It is an ideal material for manufacturing the thermal protection system, engine components, and wing structures of aerospace vehicles. For example, in the heat shield tiles of the space shuttle, polyimide fiber can help resist the high temperature during re-entry into the atmosphere and protect the internal structures and equipment of the vehicle.
• Electronics and Electrical Appliance Field: It is used to manufacture electric wires and cables, printed circuit boards, encapsulation materials for electronic components, etc. It can improve the insulation performance, heat resistance, and reliability of electronic products and extend their service life.
• Automotive Industry Field: It is applied in components such as the heat shield of automobile engines, the insulation layer of electric wires, and high-performance brake pads. It can effectively reduce the temperature in the engine compartment and improve the safety and performance of automobiles.
• Industrial Filtration Field: Relying on its high-temperature resistance and chemical corrosion resistance, it can be used for high-temperature flue gas filtration and chemical liquid filtration. It plays an important role in the waste gas treatment of industries such as steel, cement, and chemical, as well as in the chemical process filtration.
• High-Performance Textile Field: It is used to manufacture special clothing such as high-performance protective clothing, fireproof clothing, and space suits. These clothes can provide users with multiple functions such as high-temperature protection, chemical protection, and mechanical protection.

Detailed Photos

 

Company Profile

Guangdong Kaidun New Material Co., Ltd. is a technology - oriented enterprise specialized in the research, development, production, and sales of high - performance fiber - based textile products. It operates two production bases, one in Jiangsu Province and the other in Guangdong Province, with its operational headquarters situated in Foshan, Guangdong.
The Jiangsu base, namely Kaidun New Material Jinhu Co., Ltd., features a production workshop covering an area of more than 12,000 square meters and five production lines of needling machines. The Guangdong base, which is Guangdong Kaidun New Material Co., Ltd., is equipped with a 4,000 - square - meter comprehensive office building, a 10,000 - square - meter production workshop, three needling machine production lines, multiple looms, filament - cutting machines, wire - distributing machines, and slitting machines.
The company primarily focuses on developing textile or non - woven products using special high - performance fiber materials such as aramid, pre - oxidized fiber, ultra - high - molecular - weight polyethylene, basalt, polyimide, polyacrylonitrile, and carbon fiber, etc. These products are suitable for various applications including fireproofing, heat insulation, thermal preservation, sealing, weather resistance, reinforcement, cut - resistance, and puncture - resistance. They are widely used in industries such as the protect, aviation, aerospace, marine, automotive, photovoltaic, high - speed railway, firefighting, electrical appliances, chemical engineering, steel - making, thermoelectricity, textile, and plastics.
Guangdong Kaidun is an enterprise with independent R & D, customized production, and design capabilities. Its products are sold both domestically and overseas. In recent years, Kaidun Industrial has been dedicated to the research and development and productization of various new flame - retardant material products, striving to contribute to the national high - tech materials in breaking the foreign blockade. Simultaneously, it has vigorously developed high - tech technologies like intelligent manufacturing to drive the manufacturing industry from "Made in China" to "Created in China".

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