Aramid 1313 chopped fibers are used in specialized garments such as industrial high-temperature protective suits.

Aramid 1313, formally known as poly(meta-phenylene isophthalamide) fiber, is a high-performance meta-aramid fiber. Its molecular structure is formed through a polycondensation reaction between meta-phenylenediamine and meta-isophthaloyl chloride. The amide bonds are alternately linked with aromatic rings, creating a rigid molecular chain.

Aramid 1313 fiber is a soft, white, fine, fluffy, and lustrous fiber.

Properties of aramid 1313 short-cut fibers:

Applications of aramid 1313 short-cut fibers:

1. Security Protection Field

Leveraging its durable heat resistance and flame retardancy, excellent mechanical properties, and comfort, Aramid 1313 is used in the manufacture of special-purpose garments such as fire-fighting suits, military protective clothing, and industrial high-temperature protective suits. When aramid 1313 fabric is exposed to high-temperature flames, its surface rapidly chars and thickens, forming a unique thermal insulation barrier that can provide wearers with valuable escape time in high-temperature environments ranging from 900 to 1500°C. During the weaving process, a small amount of antistatic fibers or high-modulus aramids (such as aramid 1414) are typically blended into the aramid 1313 base material, enabling the final fabric to offer multiple protective functions—including antistatic and crack-resistant properties—thus effectively guarding against hazards such as arc flash explosions, static electricity, and intense heat flames. Such protective garments have become standard safety equipment for workers in high-risk industries including petrochemicals, power generation, metallurgy, firefighting, and the military.

In addition to its use in professional industrial protection, aramid 1313 is also seeing expanding applications in the field of civilian protective products. For example, it is used to weave hotel textiles, emergency escape routes, home fire-retardant decorations, ironing board covers, kitchen gloves, and flame-retardant pajamas designed to protect the elderly and children—providing greater safety and security for everyday life.

2. High-temperature filter materials

Aramid 1313 short fibers exhibit exceptionally superior properties, including long-term high-temperature resistance, dimensional stability, and chemical resistance. As a result, their filter materials occupy an important position in the high-temperature filtration market. They can be used for high-temperature flue gas filtration and hot-air filtration in various industrial sectors, including chemical plants, thermal power plants, arc furnaces, oil boilers, incinerators, aluminum plants, carbon black plants, cement plants, lime plants, coke plants, smelters, and asphalt plants. Aramid 1313 filter materials come in a variety of forms, including continuous filament filter fabrics, interwoven fabrics made from both long and short yarns, short-fiber yarn filter fabrics, and needle-punched filter fabrics. These materials can be used individually or in combination to produce filter cloths, filter bags, filter cartridges, filters, and other diverse filter products.

3. Electrical Insulating Materials

The excellent electrical properties, thermal and radiation resistance, and mechanical performance of aramid 1313 fiber enable its application in the insulation of electromechanical devices, electrical appliances, and transformers. In industry, aramid 1313 insulation materials are used for inter-phase insulation in high-load generators (700V) and motors operating under conditions of high voltage, high temperature, and vibration; for insulation in dry-type and liquid-filled transformers and rotating machinery; as insulation materials for nuclear power equipment; in printed circuit boards; and in high-density laminates and flexible bonding applications. Aramid 1313 electrical insulation materials come in various forms, including sheets, boards, non-woven fabrics, composite yarns, and coated fabrics.

4. Other industrial applications

In the field of rubber-reinforcing materials, aramid 1313 can be used to manufacture high-temperature-resistant conveyor belts, whose service life is several times longer than that of polyester materials. It can also be used as a structural material for the bead area of rickshaw or small motor vehicle tires.

In the field of sealing materials, aramid 1313 short fibers can reinforce rubber seals, enhancing their heat resistance and durability. In addition, aramid 1313 is also used as a thickener for high-temperature paints, in special sewing threads, and as a reinforcing material for automotive hoses and drive belts. With the rapid development of the new-energy vehicle industry, the applications of aramid 1313 are continuously expanding to include battery separators and insulating components, thereby providing strong assurance for the safety performance of next-generation transportation vehicles.

In the field of civil engineering, aramid 1313 staple fiber-reinforced composites can be used to manufacture seismic-resistant components and reinforcement materials, thereby ensuring the safety of buildings.

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