Taw qhia
Hauv kev lag luam niaj hnub no, cov khoom siv roj hmab tau dhau los ua qhov tseem ceeb vim lawv cov khoom tshwj xeeb xws li elasticity, hnav tsis kam, thiab tshuaj lom neeg ua haujlwm. Ntawm cov no, fluorine roj hmab (FKM) thiab perfluoroether roj hmab (FFKM) sawv tawm raws li cov roj hmab ua haujlwm siab, muaj koob npe nrov rau lawv cov tshuaj zoo tshaj thiab kub-resistant. Qhov kev ntsuam xyuas dav no qhia txog qhov sib txawv, cov ntawv thov, cov nqi, cov ntaub ntawv, thiab cov khoom ntawm FKM thiab FFKM, txhawm rau muab kev nkag siab zoo rau cov neeg muaj feem cuam tshuam hauv kev lag luam.
Qhov Sib txawv ntawm Cov Roj Hmab Fluorine (FKM) thiab Perfluoroether Rubber (FFKM)
Chemical Structure
Thawj qhov sib txawv ntawm FKM thiab FFKM nyob hauv lawv cov qauv tshuaj. FKM yog ib feem fluorinated polymer nrog carbon-carbon bonds (CC) nyob rau hauv nws cov saw tseem ceeb, whereas FFKM yog ib tug tag nrho fluorinated polymer nrog ib tug carbon-oxygen-carbon (COC) qauv, txuas nrog oxygen atoms (O). Qhov kev sib txawv ntawm cov qauv no 赋予FFKM superior tshuaj thiab kub-kub kuj piv rau FKM.
Tshuaj tiv thaiv
FFKM cov saw tseem ceeb, tsis muaj cov pa roj carbon-carbon bonds, muaj kev tiv thaiv zoo rau cov tshuaj lom neeg. Raws li pom nyob rau hauv daim duab nrog, lub zog ntawm cov pa roj carbon-hydrogen bonds yog qhov qis tshaj (kwv yees li 335 kJ / mol), uas tuaj yeem ua rau FKM tsis muaj zog hauv cov oxidants thiab polar solvents piv rau FFKM. FFKM yog resistant rau yuav luag tag nrho cov paub chemical media, nrog rau muaj zog acids, bases, organic solvents, thiab oxidants.
Kub-kub Resistance
FFKM kuj ua tau zoo nyob rau hauv qhov kub thiab txias. Thaum FKM qhov ntsuas kub tsis tu ncua feem ntau yog li ntawm 200-250 ° C, FFKM tuaj yeem tiv taus qhov kub txog 260-300 ° C. Qhov kev kub ntxhov siab no ua rau FFKM tshwj xeeb tshaj yog rau cov ntawv thov hauv qhov chaw huab cua.
Daim ntawv thov teb
Fluorine Roj Hmab (FKM)
FKM tau siv dav hauv ntau qhov chaw vim nws cov tshuaj lom neeg ua haujlwm zoo thiab muaj kev kub ntxhov siab:
- Automotive Kev Lag Luam: FKM yog ua haujlwm nyob rau hauv kev tsim cov ntsaws ruaj ruaj, roj foob, O-rings, thiab lwm yam, tshwj xeeb tshaj yog nyob rau hauv lub cav thiab kis tau tus mob.
- Kev Lag Luam Tshuaj: FKM yog siv rau cov ntsaws ruaj ruaj hauv cov kav dej, li qub, twj, thiab lwm yam khoom siv los tiv thaiv cov tshuaj lom neeg tawm.
- Kev lag luam Electronics: Nws yog siv rau rwb thaiv tsev txheej hauv cov xov hlau thiab cables, tshwj xeeb tshaj yog nyob rau hauv high-temperature thiab chemically corrosive ib puag ncig.
Perfluoroether Roj Hmab (FFKM)
FFKM yog ua haujlwm nyob rau hauv cov teb uas xav tau cov tshuaj zoo heev thiab kub-resistant:
- Aerospace: FFKM yog siv rau cov ntsaws ruaj ruaj hauv lub dav hlau thiab lub dav hlau kom tiv taus qhov kub thiab txias thiab thaj chaw tshuaj lom neeg.
- Kev Lag Luam Semiconductor: Nws yog siv rau cov ntsaws ruaj ruaj hauv cov khoom siv hluav taws xob semiconductor los tiv thaiv cov pa hluav taws xob.
- Kev lag luam Petrochemical: FFKM yog siv rau cov ntsaws ruaj ruaj nyob rau hauv high-temperature thiab high-pressure khoom nyob rau hauv cov roj refineries thiab tshuaj nroj tsuag.
Nqe thiab Nqi
FFKM tus nqi ntau lawm ua rau tus nqi lag luam ntau dua piv rau FKM. Qhov nyuaj ntawm FFKM cov khoom siv raw thiab cov txheej txheem ntau lawm ua rau nws cov nqi. Txawm li cas los xij, muab FFKM qhov kev ua tau zoo hauv qhov chaw huab cua, nws tus nqi siab dua yog qhov tsim nyog rau qee yam kev siv.
Daim ntawv thiab kev ua haujlwm
Fluorine Roj Hmab (FKM)
FKM feem ntau yog muab los ua cov khoom siv roj hmab, cov roj hmab sib xyaw, lossis cov khoom ua ntej. Nws txoj kev ua haujlwm suav nrog compression molding, extrusion, thiab txhaj tshuaj molding. FKM xav tau cov cuab yeej tshwj xeeb thiab cov txheej txheem tsis ua haujlwm vim nws qhov kub ua haujlwm siab.
Perfluoroether Roj Hmab (FFKM)
FFKM kuj tau muab rau hauv daim ntawv ntawm cov roj hmab khoom, cov roj hmab sib xyaw, lossis cov khoom ua ntej. Nws qhov kub-kub kuj yuav tsum tau ua ntau dua thiab cov khoom siv nruj dua thiab cov txheej txheem yuav tsum tau ua.
Kev sib piv
Tshuaj tiv thaiv
FFKM cov tshuaj tiv thaiv yog qhov zoo dua li FKM's. FFKM yog resistant rau yuav luag tag nrho cov paub chemical media, nrog rau muaj zog acids, bases, organic solvents, thiab oxidants. Txawm hais tias FKM tseem muaj cov tshuaj tiv thaiv zoo, nws tsis tshua muaj txiaj ntsig hauv qee qhov muaj zog oxidants thiab polar solvents piv rau FFKM.
Kub-kub Resistance
FFKM's high-temperature resistance yog superior rau FKM's. FKM qhov ntsuas kub tsis tu ncua yog feem ntau 200-250 ° C, thaum FFKM tuaj yeem ncav cuag 260-300 ° C. Qhov kev kub ntxhov siab no ua rau FFKM siv dav hauv qhov chaw huab cua.
Mechanical Performance
Ob leeg FKM thiab FFKM muaj cov cuab yeej zoo heev, suav nrog cov elasticity siab, hnav tsis kam, thiab tsim kua muag. Txawm li cas los xij, FFKM cov khoom siv kho tshuab muaj qhov ruaj khov dua ntawm qhov kub thiab txias, ua rau nws txhim khu kev qha hauv cov ntawv thov kub.
Kev Ua Lag Luam Zoo
Nrog rau kev nce qib ntawm kev lag luam thev naus laus zis tsis tu ncua, qhov kev thov rau cov khoom siv roj hmab ua haujlwm siab tau nce siab. FKM thiab FFKM muaj dav daim ntawv thov kev cia siab nyob rau hauv ntau yam teb vim lawv ua tau zoo heev:
- Automotive Kev Lag Luam: Txoj kev loj hlob ntawm lub zog tshiab tsheb yog nce qhov kev thov rau high-temperature resistant thiab chemically corrosion-resistant seals, ntxiv expanding daim ntawv thov ntawm FKM thiab FFKM.
- Kev lag luam tshuaj lom neeg: Kev sib txawv thiab kev sib txawv ntawm cov khoom siv tshuaj lom neeg yog nce qhov kev thov rau cov tshuaj tiv thaiv cov ntsaws ruaj ruaj, ntxiv nthuav dav daim ntawv thov ntawm FKM thiab FFKM.
- Kev lag luam Electronics: Lub miniaturization thiab kev ua haujlwm siab ntawm cov khoom siv hluav taws xob tau nce qhov kev thov rau cov ntaub ntawv insulating uas tiv taus qhov kub thiab txias thiab tshuaj lom neeg corrosion, ntxiv rau kev nthuav dav ntawm FKM thiab FFKM.
Xaus
Fluorine roj hmab (FKM) thiab perfluoroether roj hmab (FFKM), raws li cov neeg sawv cev ntawm cov roj hmab ua haujlwm siab, muaj cov ntawv thov dav dav hauv ntau qhov chaw vim lawv cov tshuaj tiv thaiv zoo heev thiab kub-resistant. Txawm hais tias FFKM kuj tseem kim, nws qhov kev ua tau zoo hauv qhov chaw huab cua muab nws qhov txiaj ntsig tsis tuaj yeem hloov pauv hauv qee yam kev siv. Nrog rau kev nce qib ntawm kev lag luam thev naus laus zis tsis tu ncua, qhov kev thov rau cov khoom siv roj hmab ua tau zoo yuav nce ntxiv, thiab kev cia siab rau kev lag luam rau FKM thiab FFKM yog dav.
Post lub sij hawm: Jun-24-2025