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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 was initially used as a replacement for steel-belting in tires, and later for use in ropes, gaskets, and automotive and aviation parts. [ 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 ...
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.
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]
2017 Augustine Sackett: 1841 Drywall [536] 2017 Beatrice Hicks: 1919 Device for sensing gas density [537] 2017 Carolyn Bertozzi: 1966 Bioorthogonal Chemistry [538] 2017 Daniel Lewin: 1970 Content delivery network [539] 2017 Don Arney: 1947 Bambi Bucket for aerial firefighting [540] 2017 Earle Dickson: 1892 Band-Aid self-adhesive bandages [541 ...
Computer-related introductions in 1971 (2 C, 14 P) Cameras introduced in 1971 (3 P) V. Vehicles introduced in 1971 (5 C, 9 P) 1971 video games (5 P)
A fermionic condensate is a superfluid phase formed by fermionic particles at low temperatures. The first atomic fermionic condensate was invented by Deborah S. Jin in 2003. [29] 2005 YouTube. Born from the PayPal Mafia in 2005, YouTube is the world's most popular video sharing site. In 2006, Google bought YouTube for $1.65 billion. 2006 Blu ...
Expanded polystyrene, used for building insulation, packaging, and cup, was invented by Dow Chemical. [1] 1957: Italian firm Montecatini begin large-scale commercial production of isotactic polypropylene. 1960s: High-density polyethylene bottles introduced and soon replace glass bottles in most applications [11] 1965