PHYSICAL PROPERTIES
Nylon 6-6 has a melting point of 265 C , high for a synthetic fiber, though not a match for polymers or amides such as Kevlar. These facts make it the most resistant to heat and friction and enables it withstand heat setting for twist retention
Its long molecular chain results in more sites for hydrogen bonds creating chemical springs and making it very resilient
It has a dense structure with small, evenly spaced pores. This means that nylon 6-6 is difficult to dye, but once dyed it has superior color fastness and is less susceptible to fading from sunlight and ozone and to yellowing from nitrous oxide
Nylon 6-6 has up to 36000 psi tensile and 50000 psi flexural strength lower expansion: better dimensional stability and improved thermal conductivity and electrically conductivity
CHARACTERISTICS
Nylon has a variation in luster. It can be lustrous, semi-lustrous or dull
Durability (its high tenacity fibers are used for seatbelts, tires cords, ballistic cloth and other uses)
High elongation
Excellent abrasion in resistance
Highly resilient
Paved way for easy care garments
High resistance to insects like animals and also for many chemicals
Melts instead of burning
High water absorption
Poor chemical resistance to strong acids and bases