nylon
|
|
|
|---|---|
|
Density |
1.15 g/cm³ |
|
Electrical conductivity (σ) |
10-12 S/m |
|
Thermal conductivity |
|
|
Melting points |
|
Nylon represents a family of synthetic polymers, a thermoplastic material, first produced on February 28, 1935 by Gerard J. Berchet of Wallace Carothers' research group at DuPont. The first product was a nylon-bristled toothbrush (1938), followed more famously by women's 'nylons' stockings (1940).
It is made of repeating units linked by peptide bonds (another name for amide bonds) and is frequently referred to as polyamide (PA). Nylon was the first commercially successful polymer and the first synthetic fiber to be made entirely from coal, water and air.
These are formed into monomers of intermediate molecular weight, which are then reacted to form long polymer chains. It was intended to be a synthetic replacement for silk and substituted for it in parachutes after the United States entered World War II in 1941, making stockings hard to find until the war's end. Nylon fibers are now used in fabrics and ropes, and solid nylon is used for mechanical parts and as an engineering material. Engineering grade Nylon is processed by extrusion, casting & injection molding. Type 6/6 Nylon 101 is the most common commercial grade of Nylon, and Nylon 6 is the most common commercial grade of cast Nylon


















Nylon