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Stephanie Louise Kwolek (/ ˈ k w oʊ l ɛ k /; July 31, 1923 – June 18, 2014) was a Polish-American chemist best known for inventing Kevlar (poly-paraphenylene terephthalamide). ). Her career at the DuPont company spanned more than 40 ye
Kevlar (para-aramid) [2] is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora.Developed by Stephanie Kwolek at DuPont in 1965, [3] [2] [4] the high-strength material was first used commercially in the early 1970s as a replacement for steel in racing tires.
[1] [3] In 1971, Shubin, who was then the Director of Science and Technology for the National Institute for Law Enforcement and Criminal Justice, [4] suggested using Kevlar to replace nylon in bullet-proof vests. [3] [5] Prior to the introduction of Kevlar, flak jackets made of nylon had provided much more limited protection to users. Shubin ...
Creative Urethane made the wheels to his specifications and Nasworthy took his company to California in 1972. Due to the infancy of skateboarding at this time, Nasworthy sold his wheels directly to surf shops along the coast of California, and placed some tentative advertisements featuring a young Gregg Weaver in surfing magazines. News of the ...
1971: The first space station, Salyut 1, is launched. 1971: IBM developed and released the world's first floppy disk and disk drive. [504] 1972: The first video game console, used primarily for playing video games on a TV, is the Magnavox Odyssey. [505] 1973: The first fiber optic communication systems were developed by Optelecom. [506]
In the 1980s, Dr. Jacob Lahijani, Senior Chemist at DuPont, invented Kevlar 149 and was highlighted in the "Innovation: Agent of Change. [77] Kevlar 149 is used in armor, belts, hoses, composite structures, cable sheathing, gaskets, brake pads, clutch linings, friction pads, slot insulation, phase barrier insulation, and interturn insulation. [78]
1971 California elections (2 P) L. 1971 in Los Angeles (10 P) S. 1971 in San Francisco (5 P) 1971 in sports in California (1 C, 70 P) Pages in category "1971 in ...
Kevlar is a registered trademark for a para-aramid synthetic fiber developed at DuPont in 1965 [1] and used commercially from the early 1970s onwards. On February 3, 2009, DuPont filed suit against Kolon for "theft of trade secrets and confidential information" relating to its product, Heracron .