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'''Kevlar''' is the registered trade mark of a para-aramid ([[aromatic polyamide]]) fiber produced by DuPont. [[Chemists]] Stephanie Kwolek and Herbert Blades first synthesized Kevlar in 1965, and Kwolek [[patent]]ed the fiber in 1966. Fibers of Kevlar consist of long [[molecule|molecular]] chains produced from '''poly-paraphenylene terephthalamide'''. The chains are highly oriented with strong interchain bonding, which results in a unique combination of properties, including:
'''Kevlar''' is the registered trade mark of a para-aramid ([[aromatic polyamide]]) fiber produced by [[DuPont]] Chemical Company. [[Chemist]]s Stephanie Kwolek and Herbert Blades first synthesized Kevlar in 1965, and Kwolek [[patent]]ed the fiber in 1966. Fibers of Kevlar consist of long [[molecule|molecular]] chains produced from '''poly-paraphenylene terephthalamide'''. The chains are highly oriented with strong interchain bonding, which results in a unique combination of properties, including:
*high tensile strength at low weight (five times stronger than the same weight of [[steel]])
*high tensile strength at low weight (five times stronger than the same weight of [[steel]])
*low [[density]]
*low [[density]]
*low [[electrical conductivity]]
*low [[electrical]] conductivity
*high [[chemical resistance]]
*high [[chemical]] resistance
*low [[thermal shrinkage]]
*low thermal shrinkage
*excellent [[dimensional stability]]
*excellent [[dimensional stability]]
*high [[cut resistance]]
*high [[cut resistance]]
*self-extinguishing
*self-extinguishing
Kevlar does not [[oxidization|rust]] nor corrode and is used in bullet proof vests, underwater cables, brake linings, space vehicles, boats, parachutes, skis, and building materials.
Kevlar does not rust nor [[corrosion|corrode]] and is used in bullet proof vests, underwater cables, brake linings, space vehicles, boats, parachutes, skis, and building materials.
==See also==
*[[Nomex]]
==References==
*http://www2.dupont.com/Kevlar/en_US/
[[Category:Technology]]
[[Category:Alloys]]