Aramid long filament twisted rope, flame retardant and high temperature resistant, used in braided ropes
Apr 21,2025
Aramid Long Filament Yarn
Characteristics
①High Strength and High Modulus
Tensile strength is 5-6 times that of steel wire, high modulus, and strong resistance to deformation. The twisting process enhances the bonding force between fibers, improving overall tensile and shear performance.
②High Temperature Resistance and Flame Retardancy
Decomposition temperature is as high as 500℃ (such as para-aramid), and it maintains its performance even when exposed to 300℃ for a short time. It is non-combustible, non-dripping, and has a limiting oxygen index (LOI) >28, making it an inherently flame-retardant material.
③Chemical Stability
Resistant to most organic solvents, oils, and weak acids and bases, but prolonged exposure to strong acids/strong bases may cause degradation.
④Fatigue Resistance and Abrasion Resistance
Maintains structural stability under repeated loads, suitable for dynamic applications (such as ropes and drive belts). The surface is smooth, but twisting improves its bonding strength with other materials.
⑤Lightweight
Density is approximately 1.44 g/cm³, 75% lighter than metal, suitable for weight reduction applications.
Application Areas
①Personal Protection
Ballistic equipment: Used in the fabric layers of bulletproof vests and helmets to absorb impact energy.
Firefighting suits/high-temperature resistant gloves: The flame retardancy of meta-aramid (such as Nomex) protects personnel working at high temperatures.
②Aerospace
Reinforcement for composite materials (such as aircraft cabin interiors, fairings), balancing lightweight and flame-retardant requirements.
③Industrial Fields
High-strength ropes: Deep-sea cables, climbing ropes, corrosion-resistant and floating on water.
Conveyor belts/hose reinforcement layers: Improves compressive strength, used in harsh environments such as mines and chemical plants.
④Automotive Manufacturing
Tire cord: Replaces steel wire to reduce weight and improve high-speed durability (such as racing tires).
Brake pad reinforcing fiber: Resistant to high-temperature wear, extending component life.
⑤Sporting Goods
Fishing lines, tennis racquet strings, sailing ropes, utilizing their high strength and low elongation.
⑥Electronics and Construction
Insulating materials: High-temperature resistant cable sheathing.
Concrete reinforcement: Replacing steel bars to prevent corrosion (suitable for marine engineering).
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