Tus neeg tsim khoom ntawm Kevlar, lub teeb yuag fiber ntau siv hauv cov tsho tiv thaiv mos txwv thiab lub cev armour, tau tuag hnub nyoog 90. Stephanie Kwolek Stephanie Kwolek Stephanie Louise Kwolek (/ˈkwoʊlɛk/; Lub Xya Hli 31, 1923 - Lub Rau Hli 18, 2014) American chemist uas paub txog inventing Kevlar Nws txoj haujlwm ntawm DuPont tuam txhab tau ncua ntau dua 40 xyoo. Nws nrhiav pom thawj tsev neeg ntawm cov hluavtaws fibers ntawm qhov tshwj xeeb lub zog thiab nruj: poly-paraphenylene terephthalamide. https://en.wikipedia.org › wiki › Stephanie_Kwolek
Stephanie Kwolek - Wikipedia
yog ib tus kws tshuaj ntawm lub tuam txhab DuPont DuPont tuam txhab Dupont, ntau yam qauv zoo li DuPont, duPont, Du Pont, lossis du Pont yog Fabkis lub npe lub ntsiab lus "ntawm tus choj", keeb kwm qhia tias tus tuav lub xeem nyob ze ntawm tus choj.https://en.wikipedia.org › wiki › Dupont_(surname)
Dupont (lub npe) - Wikipedia
hauv Wilmington, Delaware, thaum nws tsim lub zog dua-steel fiber ntau hauv xyoo 1965.
Leej twg tsim lub tsho tiv thaiv mos txwv?
Casimir Zeglen (Polish: Kazimierz Żegleń; yug hauv 1869 ze Tarnopol; tsis tuag ua ntej 1927) yog ib tug pov thawj Polish uas tau tsim ib lub tsho tiv thaiv mos txwv. Thaum nws muaj hnub nyoog 18 xyoo nws nkag mus rau Kev Sawv Rov Los Txiav Txim hauv Lwów (hnub no Lviv, Ukraine).
Tus poj niam puas tau tsim Kevlar?
In 1965 Stephanie Kwolek tsim thawj tsev neeg ntawm hluavtaws fibers tshwj xeeb lub zog thiab tawv. Cov tswv cuab zoo tshaj plaws yog Kevlar, cov khoom siv hauv cov tsho tiv thaiv zoo li hauv nkoj, dav hlau, hlua, cables, thiab ntau ntxiv-hauv tag nrho txog 200 daim ntawv thov.
Lub tsho tiv thaiv cov mos txwv tau tsim li cas?
Nyob rau xyoo 1500, Italian thiab Roman vaj ntxwv tau simnrog lub tswv yim ntawm cov tsho tiv thaiv mos txwv. Lawv tsim lub cev armor nrog cov khaubncaws sab nraud povtseg ntawm hlau uas txhais tau hais tias deflect cov mos txwv. … Cov tub rog Asmeskas tau txiav txim siab tawm tsam cov ris tsho hnav khaub ncaws vim qhov no, ua ke nrog tus nqi siab ntawm silk. Lub tsho flak tau tsim thaum Ntiaj Teb Tsov Rog II.
Tus poj niam kws tshuaj twg tau txais txiaj ntsig los tsim Kevlar xyoo twg?
Stephanie Kwolek npaj kev sim ua polymerization ntawm DuPont's Pioneering Research Lab hauv xyoo 1967. Kwolek, uas tuag hnub Wednesday, ua qhov kev tshawb pom uas ua rau kev tsim ntawm Kevlar. Nws tau kawm tiav qib siab hauv chemistry los ntawm cov poj niam tsev kawm qib siab ntawm qhov tam sim no Carnegie Mellon University.
