Kevlar 101: Nws yog dab tsi thiab muaj txiaj ntsig dab tsi?

Pib: Keeb Kwm ntawm Kevlar
Kevlar tau tsim los ntawm kws tshuaj Stephanie Kwolek hauv xyoo 1965 thaum ua haujlwm ntawm DuPont. Xyoo 1964, nyob rau hauv kev cia siab tias yuav muaj roj av tsis txaus, nws tau pib ua haujlwm nrog pab pawg los tsim cov kev daws teeb meem rau cov log tsheb uas tseem yuav muaj zog thiab ruaj khov. Txawm li cas los xij, nws tsis tuaj rau hauv kev lag luam siv kom txog rau thaum xyoo 1970, thaum nws pib siv los hloov cov hlau hauv cov log tsheb sib tw.

Yog li cov khoom siv Kevlar yog dab tsi?
Ntawm nws cov tub ntxhais, Kevlar yog ib qho hnyav heev tsis tau muaj zog hluavtaws polymer uas yog woven rau hauv cov khoom uas muaj tsib npaug zog dua hlau rau tib qhov hnyav. Kevlar fiber ntau muaj zog tensile siab heev, 8 npaug zog dua hlau hlau.

Thaum nws tau ua rau hauv daim ntawv fiber ntau, nws tau ua rau hauv cov xov uas tuaj yeem ua rau hauv ntaub lossis lwm yam ntaub ntawv. Qhov no yog li cas nws yog woven rau hauv lub cev armor thiab mos mos vests.

Ib qho tseem ceeb uas yuav tsum nco ntsoov txog Kevlar yog tias nws tsis yog dej tsis qab thiab tsis tuaj yeem muab tso rau hauv tshav ntuj ncaj qha. Yog tias qhov no tshwm sim, fiber ntau yuav poob qhov ntom ntom thiab ua rau nws ua haujlwm tsis zoo. Qhov no yog vim li cas koj feem ntau pom Kevlar siv los ua cov hauv ob sab phlu lossis cov tub ntxhais ntawm cov khoom.

Qhov zoo tshaj plaws ntawm Kevlar yog tias nws muaj zog heev thiab tuaj yeem ua kom muaj zog dua los ntawm kev sib txuas nrog lwm cov ntaub ntawv sib xyaw.

Tam sim no koj paub tias nws yog dab tsi, cia peb tham txog yuav ua li cas siv nws thiab tau txais txiaj ntsig los ntawm nws.

Koj siv nws li cas?
Kev siv ntau tshaj plaws ntawm Kevlar yog nyob rau hauv cov mos txwv vests thiab lub cev armor. Muaj ob qho laj thawj rau qhov no.

Ua ntej, lub teeb yuag ntawm Kevlar tso cai rau tub ceev xwm, tus neeg saib xyuas lub cev, thiab cov tub rog ua haujlwm txav mus sai thiab ywj pheej yam tsis muaj kev txhawj xeeb txog cov cuab yeej cuab tam ntau. Qhov thib ob, Kevlar qhov ze-invulnerability txhais tau hais tias cov neeg ua haujlwm pabcuam thiab tiv thaiv peb txhua hnub kuj raug tiv thaiv zoo.

Qhov koj yuav tsis paub yog tias Kevlar yog siv rau hauv cov khoom koj siv txhua hnub.

Khoom siv ncaws pob
Rau txhua tus neeg nyiam caij ski, Kevlar yog siv los ua cov khoom tseem ceeb rau caij ski thiab snowboards. Kev sib xyaw ua ke ntawm lub teeb yuag thiab muaj zog heev ua rau koj lub caij ski lossis snowboard tsis tshua muaj kev sib tsoo. Nws kuj muab ntau dua nro thiab wiggle chav thaum carving slopes.

Lwm qhov kev siv rau Kevlar yog nyob rau hauv sab hauv ntawm lub tsheb kauj vab log tsheb. Tsis tsuas yog qhov no yuav pab tiv thaiv qhov hauv koj lub log tsheb, nws tseem yuav txuas ntxiv lub neej ntawm koj lub log tsheb, yog li ncua lawv txoj sia.

Dab tsi yuav ua rau qee tus neeg xav tsis thoob yog tias Kevlar kuj tseem siv rau sab hauv ntawm lub rooj ntaus pob tesniv. Koj nyeem kom raug. Koj lub rooj ntaus pob tesniv txhua hnub tuaj yeem txuas nrog Kevlar.

Yog vim li cas rau qhov no yog tias nws tso cai rau lub pob thaws tshaj li ib txwm ntoo paddle. Qhov no kuj yog ib lub ntsiab lus zoo rau ob tog.

"Hav partygoers! Xav ua si ping pong nrog kuv tshiab Kevlar lace-up paddle?" Koj nyuam qhuav dhau los ua tus neeg txias tshaj plaws ntawm tog!

Txawm tias koj nyiam cov tuam txhab khau tseem tab tom pib koom nrog Kevlar rau hauv lawv cov khoom. Hauv 2013, Lebron James xav tau khau zoo dua rau kev ua si. Yog li nws tau mus rau Nike, qhov twg Elite Series khau yog tsim los ntawm cov ntaub ntawv zoo li carbon fiber thiab, koj twv nws, Kevlar.

tshuab
Ntseeg nws los tsis, txawm tias koj lub xov tooj yuav muaj Kevlar. Cov tuam txhab xov tooj tam sim no siv Kevlar hauv lawv cov vaj huam sib luag tom qab. Qhov no pab tiv thaiv koj lub xov tooj cov haujlwm sab hauv yog tias nws poob lossis puas lawm.

suab paj nruag
Lwm qhov kev siv rau Kevlar yog nyob rau hauv lub nruas taub hau. Leej twg puas tau pom lub pob zeb ua yeeb yam yeej paub tias nyuaj npaum li cas cov drummers ntaus lawv ntau yam. Kevlar fiber ntau tso cai rau lub taub hau nruas kom tiv taus qhov cuam tshuam tsis tu ncua thiab khaus ntawm lub nruas.

Kev tsim khoom thiab kev tsim khoom
Kevlar kuj muaj cov ntawv thov hauv kev lag luam. Nws twb tau siv los tsim cov hoses, siv, thiab lwm yam ntaub ntawv uas tuaj yeem tau txais txiaj ntsig los ntawm qee qhov kev txhawb nqa ntxiv.

Ib qho kev loj hlob ntawm kev thov rau Kevlar yog cov khaub ncaws tiv thaiv rau cov neeg ua haujlwm tsim kho, cov neeg ua haujlwm tsim kho, thiab lwm yam. Nws yog tam sim no woven rau hauv iav xws li khau looj plab hlaub thiab hnab looj tes. Lub zog ntawm Kevlar zoo heev pab txo kev txiav thiab khawb nrog rau kev puas tsuaj yog tias nws poob rau koj.

tsheb
Tam sim no nws yog lub sij hawm los nthuav. Qhov tseeb, Kevlar muaj kev siv tseem ceeb hauv ntau hom kev thauj mus los. Nws yog siv rau hauv kev tsim cov khoom siv dav hlau, tsheb qhov chaw thiab lwm yam tsheb xws li nyoob hoom qav taub, tshwj xeeb tshaj yog nyob rau hauv cov tub rog.

Tab sis nws tsis yog cov tsheb tub rog uas tab tom pib siv Kevlar. Tam sim no nws yog siv los hloov cov asbestos hauv cov pawm nres. Asbestos tuaj yeem muaj tshuaj lom thiab txaus ntshai, thiab Kevlar yog lwm txoj hauv kev zoo.

Kevlar: Ntau tshaj li qhov muag
Raws li koj tuaj yeem pom, Kevlar tsis yog pom nyob rau hauv cov tub rog armor thiab khoom siv xwb. Nws yog siv nyob rau hauv txhua yam los ntawm mundane mus rau insane. Los ntawm dav hlau mus rau khau ntaus pob tesniv, Kevlar tab tom hloov txoj kev tsim khoom.