Nyob rau hauv cov toj roob hauv pes niaj hnub no xav tau, cov khoom sib xyaw ua ke tau thawb mus rau lawv cov kev txwv. Huab cua sov, muaj kev kub ntxhov siab, thiab cov tshuaj muaj ntshav yog ob peb cov kev cov nyom uas tau ntsib los ntawm cov ntaub ntawv. Hauv cov ntawv thov no, cov polymers tsoos feem ntau poob luv luv, tsis muaj kev poob qis lossis poob ua haujlwm nyob rau hauv khaus tshav kub. Muaj hmoov kawg, ib tiam tshiab ntawm cov cua sov-resistant polymers tau tshwm sim, muab kev kawm tshwj xeeb hauv ib puag ncig muaj kev ntxhov siab.
Tsab ntawv no rho tawm mus rau hauv lub ntiaj teb ntawm kev ua tau zoo, kub-resistant polymers. Peb yuav tshawb cov khoom tseem ceeb uas ua rau lawv tsim nyog rau cov ntawv thov, sib tham txog ntau hom kev siv hluav taws xob tiv thaiv tshav dav hlau, thiab tshuaj xyuas lawv cov kev siv hluav taws xob tiag.
To kev nkag siab txog kev kub dhau los hauv polymers
Thaum tshav kub ua hauj, tseem hu ua raws li qhov ruaj khov hluav taws xob, hais txog cov polymer lub peev xwm los tswj nws cov qauv thiab cov khoom thaum nthuav tawm kub. Qhov no yog qhov tseem ceeb rau kev ua kom muaj kev ncaj ncees thiab kev ua haujlwm nyob rau hauv cov tshav kub kub. Ntau yam pab txhawb rau cov polymer lub tshav kub tiv thaiv:
- Iav hloov ntsuas kub (TG):Qhov no yog qhov ntsuas kub uas cov kev hloov pauv polymer los ntawm qhov tsis sib xws, iav lub xeev mus rau ib qho ntxiv paj yeeb. Polymers nrog TG qhov tseem ceeb ua piv txwv zoo dua cov cua sov tsis kam.
- Thermal decomposition kub (TD):Qhov no yog qhov ntsuas kub ntawm uas lub polymer pib tawg siv tshuaj. Polymers nrog cov txiaj ntsig TD siab dua tuaj yeem tiv thaiv kev ua haujlwm ntau dua ua ntej kev txwv.
- Tus qauv tshuaj:Cov txheej txheem tshwj xeeb ntawm atoms thiab daim ntawv cog lus tsis pub dhau ib lub polymer saw cuam tshuam nws lub thermal stability. Polymers nrog cov kev sib cav sib haum muaj zog feem ntau nthuav tawm cov cua sov tsis kam.
Cov Hom Ntawm Tshav Kub-resistant polymers
Ntau yam ntawm kev ua haujlwm siab polymers muaj kev zam hluav taws xob tshwj xeeb rau cov kev siv ntau yam. Ntawm no yog saib ntawm qee hom hom:
- Polyimides (PI):Lub npe paub rau lawv qhov zoo tshaj plaws hluav taws xob ruaj khov, PIS tau khav theeb tg high thiab TD tseem ceeb. Lawv tau siv dav hauv ib lub teb chaws, hluav taws xob, thiab cov ntawv thov siv tsheb vim lawv cov khoom siv zoo heev txawm tias thaum kub siab.
- Polyetherones (Peek):Peek muab qhov zoo tshaj plaws ntawm cov kub tsis kam, tshuaj lom neeg tiv thaiv, thiab lub zog kho tshuab zog. Nws pom cov ntawv thov nyob rau hauv kev xav tau cov roj thiab roj kev tshawb nrhiav, kho tsheb kho mob, thiab kev cog phom thiab kev mob kho mob.
- Fluoropolers (PTFE, PFA, FP):Cov tsev neeg ntawm polymers, suav nrog Tefllon ™, ua kom pom qhov tshwj xeeb ua kom sov thiab tshuaj lom neeg. Lawv feem ntau siv nyob rau hauv hluav taws xob rwb thaiv tsev, cov tshuab tua dej, thiab cov nqaij pleev tsis-khuam vim lawv cov khoom sib txhuam qis.
- Silicone polymers:Cov neeg polymers muaj ntau yam muaj cov kub tiv thaiv tshav kub, elasticity, thiab hluav taws xob rwb thaiv tsev zog. Lawv tau siv dav hauv gaskets, ntsaws ruaj ruaj, thiab hoses hauv ntau yam kev lag luam.
- High-kev kawm thermoplastics (Peek, PPS, PSU):Cov kev nce siab thermopleplastics khav theeb zoo heev heev tshav kub ua tsis tau, kev puas zoo zog, thiab nplaim hluavtaws. Lawv muaj nce ntxiv hauv kev xav tau cov ntawv thov xws li cov khoom lag luam, cov khoom siv hluav taws xob, thiab cov qauv hluav taws xob.
Cov ntawv thov ntawm cov cua sov-resistant polymers
Tshav kub-resist polymers ua ib lub luag haujlwm tseem ceeb hauv kev siv cov kev siv ntxhov siab. Nov yog qee cov piv txwv tseem ceeb:
- Aerospace:Lub cav txheej txheem, ua kom sov, thiab cov txheej txheem hauv cov dav hlau yuav tsum muaj kev tiv thaiv kub tsis kam tiv thaiv kev ua haujlwm kub.
- Cov Khoom Siv Hluav Taws Xob:Cov ntawv luam tawm cov laug cam, cov hluav taws xob sib txuas, thiab cov IC ntim cia rau ntawm tshav kub-resistant polymers rau kev ruaj khov ruaj khov thiab txhim khu kev qha nyob rau hauv tshav kub.
- Automotive:Cov Cheebtsam lub cav, hauv qab-hood ntu, thiab kev ua haujlwm siab log tsheb tau txais txiaj ntsig los ntawm tshav kub-tiv taus kub thiab cov chaw hnyav.
- Roj thiab Kev Tshawb Nrhiav Roj:Cheebtsam hauv plawv, cov raj xa khoom, thiab cov ntsaws ruaj ruaj siv hauv cov roj thiab roj extraction yuav tsum muaj cov khoom siv uas tuaj yeem tiv thaiv huab kub thiab ua kom nrov.
- Tshuaj lom neeg:Cov tshuaj tua kab, cov tso tsheb hlau luam, cov raj tso tsheb kauj vab feem ntau siv cov pa dej ntau thiab cov tshuaj lom neeg, xav tau cov cua sov-resistant thiab chemically resistant polymers.
- Kho Mob:Kev kho mob kho mob, khoom siv kom tsis muaj menyuam, thiab kev phais cov khoom siv uas tuaj yeem tiv thaiv kev tu thiab kev tua kab mob uas cuam tshuam nrog kub.
Lub neej tom ntej ntawm tshav kub-resistant polymers
Kev tshawb fawb thiab kev tsim kho kev tsim kho yog thawb cov ciaj ciam ntawm tshav kub ua hauj lwm nyob rau hauv polymers. Cov ntaub ntawv tshiab uas muaj ntau dua TG thiab TD qhov tseem ceeb tau tsim, muab cov ntawv thov ntxiv rau cov ntawv thov kev ntxhov siab ntau. Ib qho ntxiv, lub hom phiaj ntawm kev sib txuam cov hauv kev ua kom paub tab yog cov kev tshawb nrhiav ntawm cov kev ua kom sov kub-raws li ib puag ncig ib puag ncig.
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Cov cua sov-resistant polymers ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm siab thiab txhim khu kev qha cov ntawv thov. Nkag siab txog cov cuab yeej tseem ceeb thiab cov neeg tsim qauv xaiv cov khoom siv uas tsim nyog rau cov kev xav tau tshwj xeeb. Raws li thev naus laus zis, lub neej yav tom ntej muaj kev cog lus ntau dua kuj tau thawb cov pa hluav taws xob, txuas ntxiv mus ciaj ciam ntawm qhov ua tau zoo hauv ib puag ncig muaj kev ntxhov siab.
Lub Sijhawm Post: 03-06-24