Irabha ye-fluorine (I-FKM) iyi-thermosetting elastomer, kuyilapho i-polytetrafluoroethylene (PTFE) iyi-thermoplastic. Zombili ziyizinto ezifakwe i-fluorinated, zizungezwe ama-athomu e-fluorine ngama-athomu e-carbon, okwenza zimelane namakhemikhali ngendlela emangalisayo. Kulesi sihloko, ikhambi le-polymer le-TRP liqhathanisa izinto ezimbili phakathi kwe-FKM kanye ne-I-PTFEukuthola ukuthi iyiphi into yokugcina ene-fluorine bese ukhetha yokugcinaUmkhiqizi wepayipi le-PTFE
Izinzuzo zerabha ye-FKM kanye ne-PTFE
Imvelaphi:
FKM: Izindiza ngesikhathi seMpi Yezwe II zahlushwa ukuvuza kwezivalo ze-nitrile, okwakungenawo amazinga okushisa aphansi adingekayo ekusetshenzisweni okuhlukahlukene. Ukungasebenzi kahle kwamakhemikhali kwezibopho ze-fluorocarbon kusho ukuthi ama-elastomer ane-fluorinated, noma ama-fluoroelastomers, ayisiphetho semvelo. Ngakho-ke irabha ye-FKM yaqala ukuthengiswa ngo-1948.
I-PTFE: Ngo-1938, usosayensi waseDuPont uRoy Plancott wathola i-polytetrafluoroethylene ngengozi. UPlunkett wazama ama-refrigerant wawagcina kumasilinda. Okwammangaza ukuthi la magesi ahlangana, ashiya into emhlophe efana ne-wax, engasabeli nanoma yiziphi izinto zamakhemikhali futhi engamelana namazinga okushisa aphezulu kakhulu. I-DuPont yabhalisa uhlobo lokuqala lwe-PTFE materials-ptfe ngo-1945.
Isinqumo: Ukuthuthukiswa kwe-PTFE kuwukuhlangana kwekusasa elithakazelisayo, okwaholela ekuzalweni kwezinto ezingavamile. Kodwa-ke, izinto ezihlaba umxhwele ngokulinganayo, irabha ye-FKM, zazidingeka ngokuphelele eminyakeni yempi. Ngenxa yalesi sizathu, umnikelo womlando we-FKM fluoroelastomer usho ukuthi kungcono kancane kulo mjikelezo womncintiswano.
Izakhiwo:
Irabha ye-FKM: Irabha ye-FKM iqukethe izibopho eziqinile ze-carbon-fluorine, okwenza ibe namakhemikhali amaningi, imelane nokushisa futhi imelane nokushiswa kwe-oxidation. I-FKM iqukethe inani elihlukile lezibopho ze-carbon-hydrogen (ukuxhumana nokushisa okubuthakathaka kanye nokumelana namakhemikhali), kodwa isenokumelana namakhemikhali okunamandla kunezinye i-elastomer eziningi.
I-PTFE: I-Polytetrafluoroethylene yakhiwe uchungechunge lwama-athomu e-carbon, anama-athomu amabili e-fluorine ku-athomu ngayinye ye-carbon. Lawa ma-athomu e-fluorine azungeze uchungechunge lwe-carbon ukuze akhe i-molecule exinene enesibopho se-carbon-fluorine esinamandla kakhulu kanye nesakhiwo se-polymer, okwenza i-PTFE ingangeni kumakhemikhali amaningi.
Isinqumo: Ngokusekelwe kuphela ekwakhiweni kwamakhemikhali abo, i-PTFE ayinazo izibopho ze-carbon-hydrogen, okwenza ingasebenzi ngamakhemikhali kune-FKM (yize i-FKM isamelana namakhemikhali ngendlela emangalisayo). Ngenxa yalesi sizathu, i-PTFE imane nje iyisithunzi se-FKM kulo mjikelezo.
Izinzuzo:
I-FKM:
Ibanga lokushisa elibanzi (-45°C-204°C)
Ukumelana okuhle kakhulu kwamakhemikhali
Ukuminyana okuphezulu, ukuthungwa okuhle
Izakhiwo ezinhle zemishini
Ingabe ingaklanywa ukuze kuncishiswe ukuqhuma, i-CIP, i-SIP
I-PTFE:
Ukumelana nokushisa okubanzi (-30°C kuya ku-+200°C)
Amakhemikhali angasebenzi kahle
Ukushisa kukagesi okuhle kakhulu
Kubanda kakhulu futhi kumelana nokushisa
Ayinamatheli, ayingeni manzi
I-coefficient of friction incane kunazo zonke izinto eziqinile
Isinqumo: Akunakwenzeka ukuzihlukanisa kulo mjikelezo. I-FKM inikeza ukumelana okukhulu kwezinga lokushisa, kodwa ayifinyeleli ukusebenza kwe-PTFE maqondana nokumelana kwamakhemikhali. Futhi i-PTFE ayimelani nokushisa kakhulu, kodwa inikeza izindlela eziningi zezakhiwo ezinamathelayo.
Okubi:
I-FKM:
Ingabe izovuvukala ku-solvent ene-fluorine?
Ayikwazi ukusetshenziswa ngezinsimbi ze-alkali ezincibilikisiwe noma ezinegesi
Izindleko ziphakeme kunezinye izinto ezingezona i-fluorocarbon
Ukukhetha i-FKM engalungile kuhlelo lokusebenza kungabangela ukwehluleka okusheshayo
Amazinga okushisa aphansi angabiza kakhulu
I-PTFE:
Amandla aphansi nokuqina
Ayikwazi ukuncibilikiswa
Ukumelana nemisebe okubi
Ubulukhuni be-High Shore benza kube nzima ukuvala i-PTFE
Ama-Ptfe o-rings anezinga lokuvuza eliphakeme kunezinye i-elastomer
Ukunganwebeki kwenza ukufakwa kwezivalo eziningi kungenzeki
Isinqumo: Ngokuvamile, irabha ye-FKM iwine lo mqhudelwano ngamandla ayo aphezulu, ukuguquguquka kanye nekhono lokuvala. Vele, uma kungekho lutho ngaphandle kophawu olungasebenzi ngamakhemikhali olwanele, khona-ke i-PTFE iyisinqumo esihle. Kodwa-ke, i-FKM inikeza ukuguquguquka okwengeziwe kuzo zonke izici!
Izicelo:
I-FKM:
Izimoto
Ukucubungula amakhemikhali
Uwoyela negesi
Imishini enzima
Izindiza
Abanye abaningi
I-PTFE:
Imishini yokucubungula amakhemikhali
Amavalvu
Ukuthuthwa kwamakhemikhali
Ama-diaphragm ephampu
Isinqumo: Kungenye impi ebulalayo! I-FKM inezinhlelo zokusebenza eziningi, futhi ingasetshenziswa kwezinye izinhlelo zokusebenza ezisindayo kakhulu. Kodwa-ke, naphezu kokulinganiselwa kwayo, izinto ze-PTFE zinikeza ikhambi eliphelele lezinhlelo zokusebenza ezinzima kakhulu ezihilela ukucindezela okukhulu, izinga lokushisa kanye namakhemikhali agqwalisayo.
Izindleko:
Irabha ye-FKM iwumkhiqizo wekhwalithi ephezulu ngenxa yokwakheka kwayo kwamakhemikhali kanye nokumelana kwamakhemikhali okulandelayo. Uma ungacabangi ngezakhiwo zamakhemikhali kanye nokumelana nokushisa, ungakhetha i-elastomer eshibhile.
I-PTFE: Izinto ze-PTFE nazo ziwumkhiqizo osezingeni eliphezulu. Ngokufanayo, uma izinga lokushisa, ingcindezi, kanye namakhemikhali agqwalisayo ahilelekile ekusetshenzisweni kwakho kungadluli ezimweni ezimbi kakhulu, khona-ke ezinye izindlela ezishibhile zingase zifiseleke. Ukuze uthole ukusebenza okuhle kakhulu kokuvala, i-PTFE iboshelwe enkabeni ye-elastomer ukuze inikeze ukumelana nokucindezelwa.
Isinqumo: Zombili i-FKM kanye ne-PTFE ziyimikhiqizo esezingeni eliphezulu ngezizathu ezinhle. Zombili lezi zinto zinezakhiwo ezikhethekile, okuchaza izindleko zokuzikhiqiza. Kodwa-ke, kufanele ukhumbule ukuthi ngezinhlelo zokusebenza eziqine kakhulu, zombili zinikeza izici ezikhethekile. Kulesi simo, uthola lokho okukhokhelayo, futhi ezinye izindlela ezishibhile zivame ukwehluleka ngokushesha. Lokhu ekugcineni kuwumnotho ongalungile.
Umphumela: Ngokuvamile, ukuguquguquka kwe-FKM kuyinika inzuzo kulo mjaho ocatshangelwayo. Ekugcineni, zombili lezi zinto ezifakwe i-fluorinated zinikeza ukumelana okukhethekile kwamakhemikhali kanye nokumelana nokushisa. Kodwa-ke, njengepulasitiki, i-PTFE iqinile kakhulu kune-FKM; okwenza ifaneleke kuphela ezisetshenzisweni zokuvala eziqine kakhulu lapho ukucindezela okuphezulu kanye namakhemikhali agqwalayo kuyizinto ezibaluleke kakhulu. Ukusetshenziswa kabanzi kwe-FKM njengento yokuvala, kahle, kuqinisekisile ukunqoba kwayo!
Sithemba ukuthi lokhu kuqhathaniswa kwerabha ye-FKM kanye ne-PTFE kuzokunikeza ukuqonda okungcono ngezici ezahlukahlukene zezinto ezibonakalayo. Kumelwe kugcizelelwe ukuthi indlela engcono kakhulu yokukhetha izinto ezifanele kakhulu zohlelo lwakho lokusebenza ukukhuluma nochwepheshe ongakutshela amamaki ahlukahlukene ezinto ezibonakalayo futhi afane nesisombululo esifanele sohlelo lwakho lokusebenza.
Lokhu okungenhla kumayelana nokwethulwa kokuqukethwe okuhlobene ne-FKM kanye ne-PTFE, ngithemba ukuthi lesi sihloko singakusiza, sivela kochwepheshe baseShayinaAbahlinzeki bepayipi le-PTFE, welcome to consult our products and please freely contact us at sales 07@zx-ptfe.com
Usesho oluhlobene nepayipi le-ptfe:
Isikhathi sokuthunyelwe: Ephreli-16-2021