Major Chemical and Physical
Properties of Synthetic Thread*

Physical
Properties
Nylon Polyester Nomex® Kevlar® Polypropylene
Breaking strength
 index
100 100 65 275 70
Elongation
(fiber)
25% 25% 25% 7% 25%
Moisture
regain
4.5% 0.5% 4% 7% .01%
Abrasion maintenance Superior Good Good Fair Good
Specific gravity 1.14 1.38 1.38 1.44 .91
Melting point 485oF 485oF chars at
750oF
chars at
750oF
chars, melts at
330oF
General chemical resistance Fair Good Good Good Excellent
Acid Poor Good Fair Fair Excellent
Hot acid Poor Fair Poor Poor Excellent
Alkali Good Fair Good Good Excellent
Chlorine bleach Poor Excellent Fair Fair Excellent
Organic
bleach
Good Good Good Good Excellent
Hot-air
exposure
Poor Fair Good Good Excellent
Sunlight resistance Good Excellent Good Poor Excellent
Flammability Fair Fair Self- extinguishing Self- extinguishing Excellent
*Typical values

                  

Copyright © 2006, Palmetto Threads and Fabrics, Inc. All rights reserved.
4208 Exchange St., Little River, SC 29566
PO Box 308, Little River, SC 29566
Telephone: 843-399-2008   Fax: 843-399-2038
Not affiliated with other Palmetto companies

Revised: November 02, 2006 Website by: