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Aramid fiber
The document discusses aramid fibers, also known as aromatic polyamides, highlighting key types such as Technora, Conex, Kevlar, and Nomex. It details their advantageous properties, including heat resistance, high tenacity, and excellent chemical resistance, while also noting disadvantages like poor UV resistance and high cost. Additionally, it provides physical property specifications, such as melting point and tenacity.
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Aramid fiber
- 2. GREEN UNIVERSITY OF BANGLADESH B.sc inTextile engineering
- 3. for Ishrat Jahan Lecturer Department ofTextile Green university of Bangladesh
- 4. Prepared by Md. JahidHosen ID-130103013 Khodadad Ibrahim Anik ID-130103008 Mehedi Hasan Murad ID- 120303018
- 5.
- 6. What are aramidfibers • These are also called aromatic polyamides • Those polyamides,which have aromatic six carbon rings in polymeric chain
- 9. Main types ofaramid fibers • Technora (made by Teijin of Japan) • Conex (made by Teijin) • Kevler (made by Dupont) • Nomex (made by Dupont)
- 10. Good Qualities offibers • 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
- 11. • High modulusfive 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%
- 12. DISADVENTAGES • No substantivityto 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
- 13. Main physical properties •Melting poit371C • Tenacity 5.3gmden at 65%RH&70F • Specific gravity of fiber is 1.38 • Tg 275C
- 18.