Qhov sib txawv tseem ceeb ntawm FKM thiab FFKM yog tias FKM muaj qhov tsawg dua ntawm kev sib tw piv rau FFKM.
FKM stands rau fluoroelastomer whereas FFKM stands rau perfluoroelastomer. FKM thiab FFKM yog ob hom khoom siv elastomer. Yog li, cov no yog ob hom polymers muaj zog elastic.
FKM yog dab tsi?
Lub sij hawm FKM sawv rau fluoroelastomer. Cov khoom no tau tsim thaum lub sij hawm ua tsov ua rog ntiaj teb no II raws li ib tug antidote rau lub leaking nitrile seals uas plagued lub aircraft ntawm era. Fluorinated polymers uas tau tsim los ua ib qho kev daws teeb meem rau qhov teeb meem no muaj cov tshuaj fluorine-carbon bonds uas ua rau muaj kev sib xyaw ua ke ntawm qhov kub thiab txias. Muaj ob hom FKM loj li FKM hom 1 thiab hom 2. Cov qhab nia no tau luam tawm hauv xyoo 1950. Cov ntsiab lus fluorine, uas nyob ib ncig ntawm 26.7% mus rau 67%, ntawm cov khoom no, muaj zog tshuaj tiv thaiv.
Nws muaj qhov zoo sib txawv ntawm kev siv cov khoom FKM, thiab lawv suav nrog ntau qhov kub thiab txias nws tuaj yeem tiv taus, tshuaj lom neeg ua haujlwm zoo, muaj peev xwm huab cua zoo thiab ozone tsis kam, tiv taus kub ntau dua li cov tsis muaj fluorinated hydrocarbons, siab ceev thiab zoo siab, zoo mechanical zog, thiab lwm yam.
Txawm li cas los xij, muaj qee qhov tsis zoo ntawm kev siv cov khoom FKM no thiab. Cov no suav nrog kev nyiam o nyob rau hauv cov kuab tshuaj fluorinated, tsis muaj peev xwm siv nrog molten los yog gaseous alkali hlau, tus nqi siab dua piv rau lwm cov hydrocarbons uas tsis yog fluorinated, tsis ua hauj lwm sai rau kev xaiv qib tsis raug, thiab lwm yam. Cov ntawv thov ntawm FKM cov khoom suav nrog kev lag luam automotive, Kev tsim tshuaj lom neeg, roj thiab roj ntau lawm, kev siv tshuab hnyav, thiab kev siv aerospace.
FFKM yog dab tsi?
Lub sij hawm FFKM sawv rau perfluoroelastomer. Cov khoom no tau tsim nyob ib puag ncig xyoo 1960 tom qab tshawb pom cov ntaub ntawv FKM. Qhov xav tau los tsim cov khoom siv no los ntawm qhov yuav tsum tau muaj tshuaj tiv thaiv ntau dua thiab ua tiav cov peev txheej kub. Cov khoom siv no tau dhau los ua cov khoom siv tsis tu ncua hauv kev lag luam aerospace thiab automotive industries tam sim no.
Daim duab 01: Cov qauv ntawm Perfluorocarbon Compound
Muaj qee qhov zoo ntawm kev siv cov khoom FKM; Qhov no suav nrog ntau qhov kub thiab txias uas nws tuaj yeem tiv taus, tshuaj lom neeg ua haujlwm zoo, roj thiab ua kua ua haujlwm zoo, huab cua muaj peev xwm thiab ozone tsis kam, siab ceev, nws tus kheej-extinguishing xwm thiab tsis-flammable nyob rau hauv huab cua, thiab lwm yam.
Muaj qee qhov tsis zoo thiab; Nws tuaj yeem swells hauv cov kuab tshuaj fluorinated, tsis tuaj yeem siv nrog cov hlau molten lossis gaseous alkali, nws muaj cov thermal coefficient loj piv rau lwm cov elastomers, kev siv nyiaj, thiab lwm yam.
Qhov txawv ntawm FKM thiab FFKM yog dab tsi?
Lub sij hawm FKM stands rau fluoroelastomer whereas lub sij hawm FFKM stands rau perfluoroelastomer. Qhov sib txawv tseem ceeb ntawm FKM thiab FFKM yog tias FKM muaj qhov tsawg dua ntawm kev siv ntau dua piv rau FFKM. FFKM tuaj yeem tiv taus qhov kub thiab txias tshaj FKM. Ntxiv mus, FKM tiv taus ntau dua rau kev kub hnyiab ntau dua li cov tsis muaj fluorinated hydrocarbon compounds thaum FFKM yog tus kheej tua thiab tsis-flammable hauv huab cua. Dhau li ntawm, daim ntawv thov-wise, FKM yog siv nyob rau hauv tsheb, tshuaj ua, roj thiab roj ntau lawm, heavy-duty machinery, aerospace daim ntaub ntawv, thiab lwm yam thaum FFKM yog pab tau raws li ib txwm fixture nyob rau hauv aerospace thiab automotive industries.
Cov infographic hauv qab no nthuav tawm qhov sib txawv ntawm FKM thiab FFKM hauv daim ntawv teev npe.
Summary – FKM vs FFKM
FKM thiab FFKM yog cov khoom siv elastomer uas muaj cov qauv fluorocarbon. lawv muaj tshuaj lom neeg thiab lub cev sib txawv me ntsis. Qhov sib txawv tseem ceeb ntawm FKM thiab FFKM yog tias FKM muaj qhov tsawg dua ntawm kev sib tw piv rau FFKM.
