Polyamide family and its application in the automotive indus
Polyamide, also known as PA or NYLON, was invented in the 1930’s as the first “engineering thermoplastic.” It is called polyamide because of the repeating amide linkages (-CO-NH-) on the polymer “backbone”. The Polyamide family includes Nylon 6, Nylon 6/6, Nylon 6/10, 11, 12, glass, mineral and glass/mineral filled.They are based upon longer carbon chains in the monomer molecules. Polyamides are noted for their outstanding properties, including high tensile strength, good resistance to creep, excellent abrasion, chemical and heat resistance and low coefficient of friction. Nylon 6/10, 11 and 12 have higher dimensional stability and electrical properties due to lower moisture absorption. Nylon 11 and 12are modified with plasticizers, providing improved ductility and flexibility and the lowest moisture absorption rates. Polyamide resins exhibit greater hardness than the polyolefin’s, yet they are fairly ductile and tough (good impact strength), avoiding brittle failure. Hence PA’s can perform mechanical functions traditionally requiring a metal part. Because of these characteristics the largest and most rapidly growing market for PA has been automotive and truck parts. PA are used under-the hood applications as we
Air-intake manifolds are the major success story for nylons, since most have been converted from aluminum to nylon 66 or nylon 6. These lightweight manifolds provide improved engine efficiency and are more economical to produce than aluminum manifolds. Weight saving, which provides improved engine efficiency, although important, is not the only issue for using PA in the intake manifolds. The Nylon also makes possible more efficient assembly techniques. The Nylon air intake manifolds could be assembled using snap-fits, eliminating the need for welding or screws. Nylon 6 used for engine covers provides an unusually attractive resin-rich surface, as well as additional cost and weight reduction.
Some topics in this essay:
Hence PA’s,
PA NYLON,
nylon 6,
rocker panels,
nylon 6/6,
airbag canister housing,
6/10 11 12,
improved engine efficiency,
nylon 6/10 11,
6/10 11,
weight reduction,
underbody panels,
nylon 66,
improved engine,
11 12,
airbag canister,
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Approximate Word count = 838
Approximate Pages = 3 (250 words per page double spaced)
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