Developments in Kevlar® fibre

ByHimanshu Gupta

what it is about?

• About Kevlar® fiber?• Devlopments• Introduction of new fibers• Application area

What is Kevlar® fiber

• Kevlar® a Para amide fibre is trade name from DU

PONT, first 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

Introduction to new fibers

New series of fibres Kevlar ® AP (Advanced Performance )o 15% more stronger.Kevlar® XPo Reduce backface deformations by approximately 15%.

KEVLAR® ENGINEERED ELASTOMEo Highly fibrillated, short (0.5–1mm) fiberso Yellow colouro Useful temperature range (-200 to +350°)

Honeycomb core technology

• Composites made with Kevlar®• Mainly used for aerospace and marine

application• Provides lightweight strength, stiffness, toughness, corrosion resistance

In Aerospace

• Kevlar® helped Airbus‘ which is concept of the world's largest aircraft to become a reality," said Jim Weigand

• Mainly used for weight reduction & increase fuel efficiency.

• It is found flooring to interior walls to wing flap to engines

In Marine

• Light weight providing strength, stiffness and toughness• Versatile options for hulls, superstructures • and furniture bulkheads• Ideal for economies of fuel and/or increased payloads High impact and fatigue resistance

Liquid body armour

• Use of shear stress fluid Behaves like liquid in normal condition

but solidifies in millisecond when strikes. Silicon particles suspended in

polyethylene glycol.Enclosed between different Kevlar®

sheets

Light weight Helmet

• Made with Kevlar® XP™• Reduction in 15% back-face deformation• Higher protection per weight than existing

aramid-phenolic solutions: shell weight reduced by 20-25%

ADVANCED VEHICLE ARMOR

Advanced materials for the oil & gas industry

• DuPont technology has set new standards in

extraction, pipeline performance, extreme weather

operations, and workforce protection.• Thermoplastic umbilicals• FLEXIBLE LINES• INNOVATIVE SAFETY• REINFORCED THERMOPLASTIC PIPES

Automotive industry

• Tyres

Superb puncture, abrasion and tear resistance

• Belts • The high modulus and abrasion resistance of Kevlar® yarn help belts

retain their original shape and tension over the millions of revolutions

they go through over the lifespan of a vehicle

• Brake pads  The enhanced thermal stability and inherent abrasion resistance of

brake pads reinforced with Kevlar® pulp helps allow them to last long

and stop the vehicle safely and quietly.

• Gaskets • Chemical stability and thermal stability help make gaskets reinforced

with Kevlar® pulp strong and durable

Optical cables

• Improved coverage of the optic fibre• Provide crush resistance and cushion protection for the optic fibre.• Tight buffered fibre separated from

the cable jacket to prevent sticking• Load-bearing capacity

Heat Resistant Gloves

• Made from Kevlar ® AP• Cut resistance • Light weight• High strength