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Polyamides |
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 more
information is available for our registered members
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Nylon, a class of aliphatic
polyamides, is the single largest commercial application for
Adi-pure® high purity adipic acid. Nylon 66 (N66), or
polyhexamethyleneadipamide, and Nylon 6 (N6), or
polycaprolactam, are the most economically important nylons.
Both can be converted to fibers, used for carpets, apparel,
tire cord, and industrial applications, or to engineering
resins, used for automotive parts, electrical and electronic
applications, machine parts, films, wire coatings, and
monofilament. Fibers are produced as continuous filament
yarn and as staple; resins are produced for use in injection
molding or extrusion. Engineering resins can also be glass
reinforced, mineral filled, or otherwise modified to improve
performance.
The differences between N66 and N6 are often subtle,
but, in general, N66 has higher tensile strength, greater
hardness, higher heat deflection temperature, and a lower
rate of water absorption. In fiber applications, nylon
properties of value are low moisture absorption and abrasion
resistance, and its overall properties are dependent on
spinning speed, draw ratio, and the types of additives or
finishes used. For engineering resins, nylon is particularly
valuable because of its low coefficient of friction,
excellent abrasion resistance, good chemical resistance, and
high impact strength.
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