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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.
Margaret E. Knight was born in York, Maine on February 14, 1838, to Hannah Teal and James Knight. [4] As a little girl, “Mattie,” as her parents and friends nicknamed her, preferred to play with woodworking tools instead of dolls, stating that “the only things [she] wanted were a jack knife, a gimlet, and pieces of wood.” [5] She was known as a child for her kites and sleds.
The dishwasher, chocolate-chip cookies, and the first version of the Monopoly board game were all created by women. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: ...
In honor of Women’s History Month, we’re giving credit where credit is due, and highlighting 10 products made by women. 10 products you didn't know were invented by women [Video] Skip to main ...
The concept of catalysis invented by Scottish chemist Elizabeth Fulhame Kevlar A powerful para-aramid synthetic fiber, developed by Stephanie Kwolek at DuPont in 1965 Polonium and radium The discoveries of elements radium and polonium were made by Polish chemist Marie Curie through the deep study of their nature and their compounds. Rhenium
In the 1980s, Dr. Jacob Lahijani, Senior Chemist at DuPont, invented Kevlar 149 and was highlighted in the "Innovation: Agent of Change. [78] 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. [79]
Parkesine, the first member of the Celluloid class of compounds and considered the first man-made plastic, is patented by Alexander Parkes. [4] 1869: John Wesley Hyatt discovers a method to simplify the production of celluloid, making industrial production possible. 1872: PVC was accidentally synthesized in 1872 by German chemist Eugen Baumann ...