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Kevlar

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Kevlar

  1. 1. Developments inKevlar® fibreByHimanshu Gupta
  2. 2. what it is about?• About Kevlar® fiber?• Devlopments• Introduction of new fibers• Application area
  3. 3. What is Kevlar® fiber• Kevlar® a Para amide fibre is trade name fromfirst commercialised in 1972.• High Tensile Strength at Low Weight• Low Elongation to Break• High Modulus (Structural Rigidity)• High Chemical Resistance• Excellent Dimensional Stability• High Cut Resistance• Flame Resistant, Self-Extinguishing
  4. 4. Introduction to new fibersNew series of fibres(Advanced Performance )o 15% more stronger.o Reduce backface deformations byapproximately 15%.
  5. 5. o Highly fibrillated, short (0.5–1mm) fiberso Yellow colouro Useful temperature range (-200 to +350°)
  6. 6. Honeycomb core technology• Composites made with Kevlar®• Mainly used for aerospace and marineapplication• Provides lightweight strength,stiffness, toughness, corrosion resistance
  7. 7. In Aerospace• Kevlar® helped Airbus‘ which is concept ofthe worlds largest aircraft to become areality," said Jim Weigand• Mainly used for weight reduction & increasefuel efficiency.• It is found flooring to interior walls to wingflap to engines
  8. 8. In Marine• Light weight providing strength, stiffness and toughness• Versatile options for hulls, superstructures• and furniture bulkheads• Ideal for economies of fuel and/or increasedpayloadsHigh impact and fatigue resistance
  9. 9. Liquid body armour• Use of shear stress fluidBehaves like liquid in normal conditionbut solidifies in millisecond when strikes. Silicon particles suspended inpolyethylene glycol.Enclosed between different Kevlar®sheets
  10. 10. Light weight Helmet• Made with Kevlar® XP™• Reduction in 15% back-face deformation• Higher protection per weight than existingaramid-phenolic solutions: shell weightreduced by 20-25%
  11. 11. ADVANCED VEHICLE ARMOR
  12. 12. Advanced materials for the oil & gasindustry• DuPont technology has set new standards inextraction, pipeline performance, extreme weatheroperations, and workforce protection.• Thermoplastic umbilicals• FLEXIBLE LINES• INNOVATIVE SAFETY• REINFORCED THERMOPLASTIC PIPES
  13. 13. Automotive industry• TyresSuperb puncture, abrasion and tear resistance• Belts• The high modulus and abrasion resistance of Kevlar® yarn help beltsretain their original shape and tension over the millions of revolutionsthey go through over the lifespan of a vehicle• Brake padsThe enhanced thermal stability and inherent abrasion resistance ofbrake pads reinforced with Kevlar® pulp helps allow them to last longand stop the vehicle safely and quietly.• Gaskets• Chemical stability and thermal stability help make gaskets reinforcedwith Kevlar® pulp strong and durable
  14. 14. Optical cables• Improved coverage of the optic fibre• Provide crush resistance andcushion protection for the optic fibre.• Tight buffered fibre separated fromthe cable jacket to prevent sticking• Load-bearing capacity
  15. 15. Heat Resistant Gloves• Made from Kevlar ® AP• Cut resistance• Light weight• High strength

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