Polyaramid Fiber (Polyparaphenylene terephthalamide)

Polyaramid Fiber (Polyparaphenylene Terephthalamide) provides exceptional tensile strength-to-weight ratio, cut resistance, and thermal stability, making it one of the most widely used high-performance fibers. Its inherent resistance to flame and chemical attack ensures suitability for ballistic armor, advanced composites, and high-strength cables. Industries such as aerospace, defense, and civil engineering utilize it for applications including body armor panels, reinforced ropes, and structural reinforcement in concrete. Specific uses extend to high-tension mooring lines, impact-resistant sporting goods, and advanced filament-wound pressure vessels. In research, this fiber supports studies on ballistic impact dynamics, fatigue performance in tensioned systems, and nano-coating enhancements for improved bonding. Its unique combination of lightweight strength and environmental resilience secures its role in demanding industrial and scientific applications.

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Tolerance

Properties

Reference & Citations

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Tolerances

Fiber

Filament Diameter		±25%
Number Of Yarns		±10%
Number Of Filaments		±10%
Tex Number		±10%
Length		+5% / -1%

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Poor
Acids - dilute	Fair
Alcohols	Good
Alkalis	Good-Poor
Aromatic hydrocarbons	Good
Greases and Oils	Good
Halogenated Hydrocarbons	Good
Halogens	Good
Ketones	Good

Physical Properties

Element	Value
Resistance to Ultra-violet	Fair
Water absorption( % )	3.5
Water absorption - equilibrium( % )	3.5
Density( gcm⁻³ )	1.44

Thermal Properties

Element	Value
Lower working temperature( C )	-200
Upper working temperature( C )	180-245
Specific heat( J K⁻¹ kg⁻¹ )	1400
Thermal conductivity( W m⁻¹ K⁻¹ )	0.04@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	-2Along Axis