Aramid ntaub: nta, khoom, kev saib xyuas

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Ntawm cov ntaub ntau yam muaj textile, uas yog tsim los tsim cov khaub ncaws tshwj xeeb. Feem ntau, cov khoom siv no pab tiv thaiv ib tus neeg, tsis yog thaum ua haujlwm tsis zoo rau kev noj qab haus huv, tab sis kuj nyob rau qhov xwm txheej hnyav. Aramid ntaub muaj cov khoom tshwj xeeb.

Qhov no yog dab tsi?

Aramid fiber ntau yog siv los ua cov khoom no. Hom ntaub no yog siv dav. Nws yog cov khoom siv polymeric siv los ua cov khoom siv ntxiv hauv kev tsim cov khaub ncaws ua haujlwm.

Hauv lwm lo lus, tag nrho, lub cev armor, kaus mom hlau thiab lwm yam khoom siv yog cov khoom tsim los ntawm aramid ntaub. Lawv muaj peev xwm tiv thaiv cov mos txwv thiab los ntawm hluav taws. Cov khoom zoo li no tsis yog siv los ntawm cov tub rog thiab cov kws tsav dav hlau xwb, tab sis kuj los ntawm cov neeg tua hluav taws, cov neeg ua haujlwm steel thiab lwm cov neeg sawv cev ntawm txoj haujlwm uas ua rau muaj kev phom sij rau lub neej.

keeb kwm me ntsis

Aramid fiber ntau yog thawj zaug tsim los ntawm kws tshuaj los ntawm Asmeskas tuam txhab DuPont hauv xyoo 1964. Thaum pib, cov khoom siv tau raug hu ua Kevlar. Tam sim no nws yog ib qho ntawm cov khoom lag luam. Cov khoom zoo sib xws hauv cov khoom kuj tau ua nyob rau hauv lub USSR. Nws lub npe yog SVM - ultra-high-strength khoom. Tom qab ntawdtwaron tshwm sim ib pliag.

Txij li xyoo 1970, Kevlar ntaub tau ua lag luam.

Qhov twg siv fibers

Russian-ua aramid fabrics tau dav siv. Niaj hnub no lawv tau siv ntau qhov chaw. Kevlar ntaub yog siv thaum xub thawj:

1. Thaum ua log tsheb.
2. Cov fiber ntau yog ib feem ntawm cov kab hluav taws xob hnyav thiab kab.
3. Cov khoom siv tau siv los ua cov khoom sib xyaw ua ke rau qhov chaw thiab dav hlau kev lag luam, hauv kev tsim kho cov yachts thiab tsheb, cov khoom siv ruaj khov, cov chav siab sab hauv, kev kub ceev flywheels thiab ntau dua.
4. Aramid npuag tau siv los tsim cov tsho tiv thaiv mos txwv thiab kaus mom hlau.
5. Cov fibers kuj tau siv rau cov khoom siv kis las, khoom siv hauv tsev, ua qauv thiab ntaus suab paj nruag.

Khoom Khoom

Aramid ntaub muaj cov khoom tshwj xeeb. Cov molecules ntawm cov khoom no yog cov saw ntev. Nyob rau hauv nws, feem ntau ntawm cov amide bonds yog sib koom ua ke nrog ntau lub nplhaib uas muaj ntxhiab. Qhov no yog lub ntsiab kom zoo dua ntawm aramid ntaub. Tom qab tag nrho, xws li cov tebchaw muaj ib tug txaus loj dissociation zog. Nyob rau tib lub sijhawm, cov nplhaib uas muaj ntxhiab muab cov thermal stability ntawm cov molecules.

Ntawm cov khoom ntawm cov khoom siv no nws tsim nyog qhia:

1. Lub zog loj. Aramid npuag tuaj yeem tiv taus txog li 600 kg ib 1 hli 2. Indexlub zog ntawm cov khoom no siab dua cov hlau.
2. Kub kub ua haujlwm. Aramid ntaub, uas nws cov khoom yog tshwj xeeb, tsis yaj. Kev puas tsuaj ntawm cov fibers pib ntawm qhov kub txog li 500 ° C. Cov khoom muaj peev xwm tiv tau nrog qhib hluav taws rau 50 vib nas this. Nyob rau tib lub sijhawm, cov ntaub tsis smolder thiab tsis ignite. Txawm li cas los xij, nws lub zog tau txo qis heev los ntawm qhov raug.
3. Me ntsis ntom. Aramid ntaub yog lub teeb heev, uas ua rau nws indispensable nyob rau hauv lub tsim ntawm workwear.
4. Tus nqi qis. Feem ntau ntawm kev muag khoom koj tuaj yeem pom aramid fiber ntau. Tus nqi ntawm tus qauv reel ntawm cov xov no yog kwv yees li $ 20. Ntev - yam tsawg kawg 3 km.

Npuag nta

Aramid npuag muaj elasticity ntau dua li iav thiab cov ntaub ntawv carbon fiber. Koj tuaj yeem tsim cov ntaub zoo li no los ntawm kev siv cov khoom siv niaj hnub. Hauv qhov no, interlacing ntawm fibers tuaj yeem yog ib qho. Tsis tas li ntawd, cov ntaub tiav tuaj yeem dyed txhua xim yog tias xav tau.

Aramid ntaub xyaum tsis tsim kua muag thiab tsis hlawv. Cov khoom siv tuaj yeem tiv taus hluav taws kub, kub kub, cov khoom siv roj av thiab cov kuab tshuaj lom neeg. Nyob rau hauv load, aramid fibers tsis deform. Txawm li cas los xij, thaum twisted, lawv lub zog poob qis.

Raws li tus nqi ntawm cov ntaub ua los ntawm aramid fibers, nws yog kwv yees li $ 30 ib 1 m 2.

Cov ntaub ntawv siv

Aramid ntaub yog siv hnub no los ua:

1. Cov khoom siv tiv thaiv thiab khaub ncaws rau metallurgists, welders thiab tua hluav taws. Ua tsaug rau nws cov khoom tshwj xeeb, cov ntaub tiv thaiv cov tawv nqaij ntawm cov neeg ua haujlwm los ntawm qhov kub thiab txias, molten hlau, sparks, thiab qhib nplaim taws.
2. Cov khoom tiv thaiv thiab khaub ncaws rau cov neeg ua haujlwm ntawm ntau lub koom haum tub ceev xwm thiab tub rog.
3. Blast npog thiab lwm yam khoom siv.

Tus nqi ntawm ib lub tsho ua los ntawm cov ntaub zoo li no nyob ntawm tus qauv tsim thiab hom khoom. Qhov pheej yig tshaj yog $250. Txawm li cas los xij, cov kev tshawb fawb tau pom tias qhov kev tiv thaiv zoo tshaj plaws rau ib tus neeg yog cov khaub ncaws uas sib xyaw ua ke ntawm cov yas thiab aramid ntaub.

Yuav ua li cas tu cov ntaub no

Cov khoom ua los ntawm cov ntaub aramid tuaj yeem ntxuav yog tias tsim nyog. Cov khoom zoo li no tsis ntsws. Txawm li cas los xij, ntau cov kev tshawb fawb tau pom tias yog vim li cas rov qab ntxuav, raug tshav ntuj ncaj qha thiab ultraviolet rays, cov khoom tseem ceeb ntawm cov ntaub deteriorate, nws pib poob nws lub zog.

Cov kws tshaj lij tsis pom zoo kom tshem tawm cov stains los ntawm qhov chaw ntawm cov khoom siv tshuaj dawb, nrog rau cov khoom npaj rau kev tu kom qhuav. Lawv degrade lub zog ntawm aramid ntaub. Xws li ib tug tsis zoo yog deprived ntawm cov khoom uas muaj ib tug waterproof txheej. Hauv lwm qhov xwm txheej, ntxuav Kevlar cov khoom yuav tsum tau ua nrog ceev faj heev.