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Aramid fibers are characterized by excellentenvironmental and thermal stability, static anddynamic fatigue resistance, and impact resistance.These fibers have the highest specific tensile strength (strength/density ratio) of anycommercially available continuous-filamentyarn. Aramid-reinforced thermoplastic compositeshave excellent wear resistance andnear-isotropic properties — characteristicsnot available with glass or carbon-reinforcedcomposites.
Aramid fiber, trade-named Kevlar, is availablein several grades and property levels forspecific applications. The grade designated simplyas Kevlar is made specifically to reinforcetires, hoses, and belting, such as V-belts andconveyor belts.