GREEN UNIVERSITY OF

BANGLADESH

B.sc in Textile engineering

Prepared for

Ishrat Jahan LecturerDepartment of TextileGreen university of Bangladesh

Prepared byMd. Jahid HosenID-130103013Khodadad Ibrahim AnikID-130103008Mehedi Hasan Murad ID- 120303018

Presentation Topic

Aramid Fiber

What are aramid fibers• These are also called aromatic polyamides• Those polyamides,which have aromatic six

carbon rings in polymeric chain

Main types of aramid fibers

• Technora (made by Teijin of Japan)• Conex (made by Teijin)• Kevler (made by Dupont)• Nomex (made by Dupont)

Good Qualities of fibers• Good heat resistance• High tenacity & modulus of rigidity• Non flammability• Greater sticking temperature• Aramid dominate over glass fibers,and carbon

fibers in all over the world market

• High modulus five times greater than polyester

• Excellent in tension• Good chemical resistance• Compactness and solidity of molecular

structure• In dry air,at 260C Aramid shrink only 2%

DISADVENTAGES• No substantivity to dyes• No environment friendly• Poor UV resistance• Rapid loss of strength with flexing ,folding

&flogging• Low light fastness,even spun dyed yarn• Very expensive• Poor in compression than glass

Main physical properties• Melting poit371C• Tenacity 5.3gm\den at 65%RH&70F• Specific gravity of fiber is 1.38• Tg 275C

Thank You