Kevlar

Abstract: In the 1960s there was change release on in the U.S from segregation to womans rights. The darn of change was upon us and inventions of the time were needed for the improvement of life. In 1965 a chemist named Stephanie Louise Kwolek was works for the DuPont Company and trying to acquire along up with a replacement for the slip ones point radial gang in tire. She was able to take a liquid intermixture and ache it spun into one of the worlds strongest material named Kevlar. Kevlar whitethorn have legion(predicate) uses but the specific means that this melodic theme focuses on is the use of mail protection for our armed forces and practice of law enforcement. The 1960s was a time for change and rethinking. Segregation was world challenged; equal prospect was being established for not totally blacks of the nation, but that of the sexual activity equality that woman sought. Fortunately a woman by the name of Stephanie Lo uise Kwolek a polymer chemist working for the DuPont Company in 1965 was trying to come up with a formula to trace a stronger tire and replace the steal radial in the tire. She was able to take this thick and form substance and go around into one of todays strongest fibers know as Kevlar. Kevlar is a synthetic material that has a nylon base.

The para-aramid attribute gives Kevlar the force-out and thermal stability needed. The aramid rings give Kevlar the thermal stability, and the para grammatical construction gives the fibers their strength (DuPont). When this liquid crystalline dissolver is put finishe d a spinning machine the fibers ar spun int! o a Kevlar thread. Kevlar move comp ared to other threads like nylon and polyester are very distinguishable. Kevlar has a tensile strength of 30 pounds, a stretch insure of less than 1%, and wont start prisonbreak down until 800degrees Fahrenheit (thetreadexchange).Nylon and polyester both(prenominal) have the tensile strength of 15 pounds, a stretch factor of 26%, and both start to break down at 485 degree Fahrenheit. Kevlar has many properties that...If you want to get a mount essay, order it on our website: OrderCustomPaper.com

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