Aramid fiber, tseem hu ua polyamide fiber, yog cov khoom siv hluavtaws uas muaj npe nrov rau nws lub zog thiab ua haujlwm ntev. Nws cov khoom siv zoo heev ua rau nws tsim nyog rau ntau yam kev siv, los ntawm aerospace mus rau kev ua tub rog thiab kev lag luam, nrog rau cov khoom siv tiv thaiv tus kheej xws li kaus mom hlau, tsho khuam, thiab hnab looj tes. Hauv tsab xov xwm no, peb yuav tshawb xyuas qhov muaj zog aramid fiber ntau npaum li cas thiab dab tsi ua rau nws txawv.
Aramid fiber ntau yog thawj zaug tsim los ntawm DuPont Tuam Txhab hauv xyoo 1965 raws li kev lag luam cim Kevlar. Txij thaum ntawd los, ntau lwm lub tuam txhab tau tsim cov fibers zoo sib xws, xws li Teijin Twaron thiab Honeywell Spectra. Aramid fiber ntau yog tsim los ntawm cov saw hlau ntev polymer uas muaj cov rov ua haujlwm ntawm amide pawg. Cov tshuaj muaj zog sib txuas ntawm cov pab pawg no muab aramid fiber ntau nws cov khoom tshwj xeeb.
Lub zog thiab Durability
Ib qho ntawm cov yam ntxwv tseem ceeb ntawm aramid fiber ntau yog nws lub zog tshwj xeeb thiab ua haujlwm ntev. Aramid fiber ntau muaj zog dua hlau ntawm qhov hnyav-rau-qhov hnyav, ua rau nws yog ib qho ntawm cov fibers muaj zog tshaj plaws hauv ntiaj teb. Nws muaj lub zog tensile txog li 3.62 GPa (527, 000 psi), uas yog tsib npaug zog dua hlau. Aramid fiber kuj muaj cov qauv siab ntawm elasticity, uas txhais tau tias nws tuaj yeem tiv taus deformation hauv kev ntxhov siab.
Resistance rau tshav kub thiab nplaim taws
Aramid fiber ntau tiv taus cua sov thiab nplaim taws, ua rau nws zoo tagnrho rau siv nyob rau hauv qhov kub thiab txias. Nws tuaj yeem tiv taus kub txog 350 degree (662 degree F) yam tsis muaj melting lossis degrading. Qhov kev tiv thaiv cua sov no ua rau aramid fiber ntau cov khoom siv tseem ceeb hauv kev lag luam xws li aerospace, tsheb, thiab kev tsim khoom.
Tshuaj tiv thaiv
Lwm qhov txiaj ntsig tseem ceeb ntawm aramid fiber ntau yog nws qhov ua haujlwm siab rau ntau cov tshuaj, xws li acids, alkalis, thiab cov kuab tshuaj. Qhov no ua rau nws haum rau siv nyob rau hauv hnyav tshuaj ib puag ncig, xws li tshuaj nroj tsuag thiab roj refineries.
Fatigue Resistance
Aramid fiber ntau muaj kev qaug zog zoo heev, uas txhais tau hais tias nws tuaj yeem tiv taus rov qab thauj khoom thiab tshem tawm yam tsis ua haujlwm. Qhov no ua rau aramid fiber zoo rau kev siv hauv cov ntawv thov uas cov khoom siv thauj khoom thauj, xws li log tsheb, hlua, thiab cables.
Yuav tiv tauj peb li cas?
