Thermoplastic polyurethane (TPU) tsis yog tsuas yog muaj cov khoom siv roj hmab ntawm cov polyurethane sib txuas, xws li lub zog siab, kev tiv thaiv kev hnav siab, tab sis kuj muaj cov khoom thermoplastic ntawm cov ntaub ntawv polymer linear, yog li nws daim ntawv thov tuaj yeem nthuav dav mus rau thaj chaw yas. Tshwj xeeb tshaj yog nyob rau hauv xyoo tas los no, TPU tau dhau los ua ib qho ntawm cov ntaub ntawv polymer tsim sai tshaj plaws.
TPU muaj cov yam ntxwv zoo heev ntawm kev nruj, kev nruj siab, kev tawv, thiab kev laus, ua rau nws yog cov khoom siv laus thiab zoo rau ib puag ncig. Nws muaj lub zog siab, kev tawv zoo, kev hnav tsis kam, kev tiv taus txias, kev tiv taus roj, kev tiv taus dej, kev laus, thiab kev tiv taus huab cua, uas tsis muaj qhov sib piv rau lwm cov khoom siv yas. Tib lub sijhawm, nws muaj kev tiv thaiv dej thiab dej noo, kev tiv taus cua, kev tiv taus txias, cov tshuaj tua kab mob, kev tiv taus pwm, thiab ntau yam haujlwm zoo heev, xws li kev khaws cia sov, kev tiv taus UV, thiab kev tso tawm zog.
TPU muaj ntau yam kub ua haujlwm. Feem ntau cov khoom siv tau ntev hauv -40-80 ℃, thiab qhov kub ua haujlwm luv luv tuaj yeem ncav cuag 120 ℃. Cov ntu mos hauv cov qauv ntu ntawm TPU macromolecules txiav txim siab lawv qhov kev ua haujlwm kub qis. Polyester hom TPU muaj qhov ua haujlwm kub qis qis thiab yooj ywm dua li polyether hom TPU. Qhov kev ua haujlwm kub qis ntawm TPU yog txiav txim siab los ntawm qhov kub hloov iav pib ntawm ntu mos thiab qhov kub mos ntawm ntu mos. Qhov ntau ntawm kev hloov iav nyob ntawm cov ntsiab lus ntawm ntu nyuaj thiab qib ntawm kev sib cais theem ntawm cov ntu mos thiab tawv. Thaum cov ntsiab lus ntawm cov ntu nyuaj nce thiab qib ntawm kev sib cais theem txo qis, qhov ntau ntawm kev hloov iav ntawm cov ntu mos kuj dav dua, uas yuav ua rau muaj kev ua haujlwm kub qis tsis zoo. Yog tias polyether uas tsis sib xws nrog ntu nyuaj siv ua ntu mos, qhov kev hloov pauv kub qis ntawm TPU tuaj yeem txhim kho. Thaum qhov hnyav molecular ntawm ntu mos nce lossis TPU raug annealed, qhov qib ntawm kev tsis sib xws ntawm cov ntu mos thiab tawv kuj yuav nce ntxiv. Thaum kub siab, nws cov kev ua tau zoo feem ntau yog tswj los ntawm cov saw hlau tawv, thiab qhov nyuaj ntawm cov khoom siab dua, nws qhov kub siab dua. Tsis tas li ntawd, qhov kev ua tau zoo kub siab tsis yog tsuas yog cuam tshuam nrog qhov ntau ntawm cov saw hlau txuas ntxiv, tab sis kuj cuam tshuam los ntawm hom saw hlau txuas ntxiv. Piv txwv li, qhov kub siv ntawm TPU tau los ntawm kev siv (hydroxyethoxy) benzene ua cov saw hlau txuas ntxiv siab dua li TPU tau los ntawm kev siv butanediol lossis hexanediol ua cov saw hlau txuas ntxiv. Hom diisocyanate kuj cuam tshuam rau qhov kub siab ntawm TPU, thiab cov diisocyanates sib txawv thiab cov saw hlau txuas ntxiv ua cov ntu tawv qhia txog cov ntsiab lus yaj sib txawv.
Tam sim no, daim ntawv thov ntawm TPU zaj duab xis tau dav zuj zus, thiab nws maj mam nthuav dav los ntawm cov khau ib txwm muaj, cov ntaub, khaub ncaws mus rau aerospace, tub rog, hluav taws xob thiab lwm yam teb. Tib lub sijhawm, TPU zaj duab xis yog cov khoom siv tshiab hauv kev lag luam uas tuaj yeem hloov kho tas li. Nws tuaj yeem nthuav nws daim ntawv thov los ntawm kev hloov kho cov khoom siv raw, kev hloov kho cov mis ntawm cov khoom siv, kev ua kom zoo dua ntawm cov txheej txheem tsim khoom thiab lwm txoj hauv kev, yog li muab TPU zaj duab xis ntau qhov chaw siv. Yav tom ntej, qib thev naus laus zis kev lag luam yuav raug txhim kho, Daim ntawv thov ntawm TPU yuav mus ntxiv.
Cov ntawv thov tam sim no ntawm TPU cov ntaub ntawv hauv peb lub tuam txhab yog dab tsi?
Vim tias cov tsheb ua lub luag haujlwm tseem ceeb hauv peb lub neej, qhov kev thov kom muaj kev tiv thaiv tsheb ntawm cov tswv tsheb kuj nce ntxiv. Cov yeeb yaj kiab tiv thaiv xim TPU yog qhov kev daws teeb meem zoo tshaj plaws los daws qhov kev thov no.
Ib qho ntawm cov yam ntxwv ntawm TPU xim tiv thaiv zaj duab xis yog nws qhov kev tiv thaiv zoo heev, uas tuaj yeem tiv taus qhov cuam tshuam ntawm cov khoom ntse xws li xuab zeb thiab xuab zeb ntawm txoj kev, thiab tiv thaiv lub cev los ntawm khawb thiab dents. Tsis tas yuav txhawj txog kev puas tsuaj thaum tsav tsheb lawm, thiab koj tuaj yeem tsom mus rau txoj kev thiab kev tsav tsheb thaum tsav tsheb.
Tsis tas li ntawd xwb, zaj duab xis tiv thaiv xim TPU muaj kev tiv thaiv huab cua zoo heev. Txawm tias nws yog lub hnub ci muaj zog, xeb los ntawm nag lossis daus, lossis cov pa phem, zaj duab xis tiv thaiv xim no tuaj yeem tiv thaiv cov xim ntawm lub tsheb kom tsis txhob puas tsuaj, ua rau lub tsheb zoo nkauj tas li.
Qhov xav tsis thoob ntxiv yog tias peb cov khoom siv TPU tiv thaiv xim kuj muaj kev ua haujlwm kho tus kheej. Tom qab raug khawb me ntsis, nws cov khoom tuaj yeem kho nws tus kheej hauv qhov chaw sov so, ua rau lub cev rov zoo li qub thiab txuas ntxiv lub neej ua haujlwm ntawm cov xim tiv thaiv.
Cov yeeb yaj kiab tiv thaiv xim TPU no tsis yog tsuas yog muab kev tiv thaiv dav dav xwb, tab sis kuj tseem ceeb heev rau kev tiv thaiv ib puag ncig. Cov yeeb yaj kiab tiv thaiv xim ua los ntawm cov khoom siv zoo rau ib puag ncig yuav tsis ua rau muaj kev nyuaj siab rau ib puag ncig, uas yog raws li kev nrhiav kev mus ncig ntsuab los ntawm cov neeg niaj hnub no.
Qhov kev tso tawm ntawm TPU cov khoom siv tiv thaiv xim cim qhia txog kev hloov pauv hauv kev tiv thaiv tsheb, muab cov kev daws teeb meem kev tiv thaiv zoo dua thiab txhim khu kev qha rau cov tswv tsheb. Txais yuav kev tiv thaiv ntsuab, cia peb lub tsheb thiab lub ntiaj teb ua pa ua ke.
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Lub sijhawm tshaj tawm: Lub Yim Hli-03-2023
