Nylon 6 and Nylon 6.6 - An insight

Published: 29th June 2007
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Nylon 6,6 and Nylon 6 are the most versatile commercial nylon products in the market having a vast range of uses depending upon the need. Both the products are used for engineering applications though Nylon 6,6 is more used for its ductility and tensile strength. Nylon-6,6 which is also known as Polyamide 6,6.is the semi-crystalline polyamide commonly used in fiber applications such as carpeting, clothing, and tire cords. Nylon 6 which is also known as Poly-caprolactum has many individual uses. The numerical nomenclature for nylon is derived from the number of carbon atoms in the diamine and dibasic acid monomers used to manufacture it. The ratio of carbon atoms is what gives each nylon type its unique property characteristics.

Nylon 6 is used more for products like Bristles for toothbrushes, sutures for surgery, manufacture of hosiery, knitted garments. Also recently there had been more products developed using Nylon 6 which includes large variety of threads, ropes, filaments, nets, and tire cords.

Nylon 6,6 has a tighter molecular structure than nylon 6 due to a higher level of hydrogen bonding and maximum alignment between molecular chains, creating a tighter structure that better resists crushing, matting and stain penetration. Nylon 6 does not have this level of internal bonding, resulting in a more open structure. Nylon 6,6 gives carpet the unique balance of strength, elasticity and durability it needs to survive in commercial installations.

The stiffness of nylon 6/6 can be improved up to 10 times. The use of internal lubricants improves on the already excellent wear resistance and friction properties on nylon 6/6. Its versatility allows it to be used in almost any application that requires high physical strength, ductility, heat resistance and chemical resistance.

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