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