Kevlar

Abstract: In the 1960s there was change passing on in the U.S from segregation to womans rights. The tour 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 contact along up with a replacement for the slip ones headspring 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 many uses but the particular(prenominal) means that this melodic theme focuses on is the use of arms protection for our armed forces and practice of law enforcement. The 1960s was a time for change and rethinking. Segregation was world challenged; equal probability was being established for not totally blacks of the nation, but that of the sex activity equality that woman sought. Fortunately a woman by the name of Stepha nie Louise Kwolek a polymer chemist working for the DuPont Company in 1965 was trying to come up with a formula to put to work a stronger tire and replace the steal radial in the tire. She was able to take this thick and form substance and coil 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 durability and caloric stability needed. The aramid rings give Kevlar the thermal stability, and the para organise gives the fibers their strength (DuPont). When this liquid crystalline dissolver is put done a spinning machine the fibers ar spun into a Kevlar t! hread. Kevlar threads comp ared to other threads like nylon and polyester are very distinguishable. Kevlar has a tensile strength of 30 pounds, a stretch reckon of less than 1%, and wont start gaolbreak 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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