Irabha yefluorine (FKM) yi-thermosetting elastomer, ngelixa i-polytetrafluoroethylene (PTFE) iyi-thermoplastic. Zombini zizinto ezifakwe i-fluorinated, zijikelezwe zii-athomu ze-fluorine zii-athomu ze-carbon, nto leyo eyenza ukuba zikwazi ukumelana neekhemikhali ngendlela emangalisayo. Kweli nqaku, isisombululo se-TRP polymer sithelekisa ezi zinto zimbini phakathi kwe-FKM kunye ne-I-PTFEukufumanisa ukuba yeyiphi into yokugqibela ene-fluorine kwaye ukhethe yokugqibelaUmenzi wepayipi ye-PTFE
Iingenelo zerabha ye-FKM kunye ne-PTFE
Imvelaphi:
FKM: Iinqwelo-moya ngexesha leMfazwe Yehlabathi yesiBini zazichaphazeleka kukuvuza kwe-nitrile seals, ezazingenawo amandla okusebenza aphantsi obushushu obufunekayo kwiindlela ezahlukeneyo zokusebenza. Ukungangeni kweekhemikhali kweebhondi ze-fluorocarbon kuthetha ukuba ii-elastomers ezine-fluorinated, okanye ii-fluoroelastomers, zisigqibo sendalo. Ngoko ke irabha ye-FKM yaqala ukuthengiswa ngo-1948.
I-PTFE: Ngo-1938, isazinzulu saseDuPont uRoy Plancott safumanisa i-polytetrafluoroethylene ngengozi. UPlunkett wazama ii-refrigerants waza wazigcina kwiisilinda. Okwammangalisayo kukuba ezi gesi zahlangana, zashiya into emhlophe efana ne-wax, engasabelani nayo nayiphi na into yeekhemikhali kwaye inokumelana nobushushu obuphezulu kakhulu. I-DuPont yabhalisa uphawu lokuqala lwe-PTFE materials-ptfe ngo-1945.
Isigqibo: Uphuhliso lwe-PTFE luyinto eyenzekileyo ngengozi, eyakhokelela ekuzalweni kwezinto ezingaqhelekanga. Nangona kunjalo, izinto ezinomtsalane ngokulinganayo, irabha ye-FKM, zazifuneka ngokupheleleyo kwiminyaka yemfazwe. Ngenxa yesi sizathu, igalelo lembali le-FKM fluoroelastomer lithetha ukuba ingcono kancinci kolu khuphiswano.
Iipropati:
Irabha ye-FKM: Irabha ye-FKM ineebhondi ze-carbon-fluorine ezinamandla, nto leyo eyenza ukuba ingabi nakhemikhali, ingabi nabushushu kwaye ingabi na-oxidation. I-FKM ineebhondi ze-carbon-hydrogen ezahlukeneyo (unxibelelwano nobushushu obubuthathaka kunye nokumelana neekhemikhali), kodwa isenokumelana neekhemikhali ezinamandla kunezinye ii-elastomers ezininzi.
I-PTFE: I-Polytetrafluoroethylene yenziwe ngomxokelelwane wee-athomu zekhabhoni, kunye nee-athomu ezimbini ze-fluorine kwi-athomu nganye yekhabhoni. Ezi athomu ze-fluorine zijikeleze umxokelelwane wekhabhoni ukuze zenze imolekyuli exineneyo ene-carbon-fluorine bond enamandla kakhulu kunye nesakhiwo se-polymer, nto leyo eyenza i-PTFE ingangeni kwiikhemikhali ezininzi.
Isigqibo: Ngokusekelwe kuphela kulwakhiwo lwazo lweekhemikhali, i-PTFE ayinazo iibhondi ze-carbon-hydrogen, nto leyo eyenza ukuba ingasebenzi ngokweekhemikhali kune-FKM (nangona i-FKM isakwazi ukumelana neekhemikhali kakhulu). Ngenxa yesi sizathu, i-PTFE isithunzi nje se-FKM kule ngqungquthela.
Iingenelo:
FKM:
Uluhlu olubanzi lobushushu (-45°C-204°C)
Ukumelana okugqwesileyo kweekhemikhali
Uxinano oluphezulu, ubume obuhle
Iimpawu ezilungileyo zoomatshini
Ngaba ingenziwa ukuze inciphise ukuqhuma, i-CIP, i-SIP
I-PTFE:
Ukumelana nobushushu obubanzi (-30°C ukuya ku-+200°C)
Ayisebenzi ngokweekhemikhali
Ubushushu bombane obuhle kakhulu
Ibanda kakhulu kwaye ayitshisi ubushushu
Ayinamatheli, ayingeni manzi
I-coefficient of friction yeyona incinci kuzo zonke izinto eziqinileyo
Isigqibo: Akunakwenzeka ukubahlulahlula kule ngqungquthela. I-FKM inika ukumelana okukhulu kobushushu, kodwa ayifikeleli ekusebenzeni kwe-PTFE ngokubhekiselele kukumelana neekhemikhali. Kwaye i-PTFE ayixhathisi kangako ubushushu, kodwa inika iindlela ezininzi zeempawu ezinganamatheliyo.
Iingxaki:
FKM:
Ngaba iya kuvuvukala kwi-solvent ene-fluorine?
Ayinakusetyenziswa ngeentsimbi ze-alkali ezinyibilikisiweyo okanye ezinegesi
Ixabiso liphezulu kunezinye ii-non-fluorocarbons
Ukukhetha i-FKM engalunganga kwisicelo kunokubangela ukungaphumeleli ngokukhawuleza
Amanqanaba obushushu aphantsi angabiza kakhulu
I-PTFE:
Amandla aphantsi kunye nokuqina
Ayinakunyibilikiswa
Ukumelana nemitha okubi
Ubunzima be-High Shore benza kube nzima ukuyivala i-PTFE
Iiringi ze-o-Ptfe zinezinga eliphezulu lokuvuza kunezinye ii-elastomers
Ukungaguquguquki kwenza kube nzima ukufaka izitywino ezininzi
Isigqibo: Ngokubanzi, irabha ye-FKM iphumelele olu khuphiswano ngamandla ayo aphezulu, ukuguquguquka kunye nokukwazi kwayo ukutywina. Kakade ke, ukuba akukho nto ngaphandle kwetywina elingasebenzisi khemikhali elaneleyo, ngoko i-PTFE lukhetho olufanelekileyo. Nangona kunjalo, i-FKM inika ukuguquguquka okungakumbi kuzo zonke iinkalo!
Izicelo:
FKM:
Iimoto
Ukulungiswa kweekhemikhali
Ioyile kunye negesi
Oomatshini abasebenza nzima
Inqwelo-moya
Abanye abaninzi
I-PTFE:
Izixhobo zokucubungula iikhemikhali
Iivalvu
Uthutho lweekhemikhali
Iidiaphragms zepompo
Isigqibo: Eli lidabi elibulalayo! I-FKM inoluhlu olubanzi lwezicelo, kwaye ingasetyenziswa kwezinye izicelo ezinzima kakhulu. Nangona kunjalo, nangona inemida, izixhobo ze-PTFE zibonelela ngesisombululo esiphezulu kwizicelo ezinzima kakhulu ezibandakanya uxinzelelo olugqithisileyo, ubushushu kunye neekhemikhali ezirhabaxa.
Ixabiso:
Irabha ye-FKM yimveliso ekumgangatho ophezulu ngenxa yokwakheka kwayo ngamakhemikhali kunye nokumelana neekhemikhali okulandelayo. Ukuba awucingi ngeempawu zeekhemikhali kunye nokumelana nobushushu, ungakhetha i-elastomer engabizi kakhulu.
I-PTFE: Izinto ze-PTFE nazo ziyimveliso esemgangathweni ophezulu. Ngokufanayo, ukuba ubushushu, uxinzelelo, kunye neekhemikhali ezirhabaxa ezibandakanyekayo ekusetyenzisweni kwakho azidluli kwiimeko ezigqithisileyo, ngoko ke ezinye iindlela ezingabizi kakhulu zingaba yimfuneko. Ukuze ufumane ukusebenza okugqwesileyo kokutywina, i-PTFE ibotshelelwe kwi-elastomer core ukubonelela ngokumelana nokucinezelwa.
Isigqibo: Zombini i-FKM kunye ne-PTFE ziimveliso ezikumgangatho ophezulu ngezizathu ezivakalayo. Zombini ezi zinto zineempawu ezikhethekileyo, nto leyo echaza iindleko zokuziveza. Nangona kunjalo, kufuneka ukhumbule ukuba kwizicelo ezigqithisileyo, zombini zibonelela ngeempawu ezikhethekileyo. Kwimeko enjalo, ufumana oko ukuhlawulelayo, kwaye ezinye iindlela ezingabizi zihlala zisilela ngokukhawuleza. Oku ekugqibeleni kuqoqosho olungalunganga.
Isiphumo: Ngokubanzi, ukuguquguquka kwe-FKM kuyinika ithuba kolu gqatso lwengqikelelo. Ekugqibeleni, zombini ezi zinto zifakwe i-fluorinated zibonelela ngokumelana okukhethekileyo kweekhemikhali kunye nokumelana nobushushu. Nangona kunjalo, njengeplastiki, i-PTFE iqinile ngakumbi kune-FKM; okwenza ifaneleke kuphela kwizicelo zokutywina ezigqithisileyo apho uxinzelelo oluphezulu kunye neekhemikhali ezirhabaxa zezona zinto ziphambili. Ukusetyenziswa ngokubanzi kwe-FKM njengezinto zokutywina, kulungile, kuqinisekisile uloyiso lwayo!
Siyathemba ukuba olu thelekiso lwerabha ye-FKM kunye ne-PTFE luya kukunika ukuqonda okungcono ngeempawu ezahlukeneyo zesixhobo ngasinye. Kufuneka kugxininiswe ukuba eyona ndlela ilungileyo yokukhetha isixhobo esifanelekileyo kwisicelo sakho kukuthetha nengcali enokukuxelela amanqanaba ahlukeneyo esixhobo kwaye ihambelane nesisombululo esifanelekileyo kwisicelo sakho.
Oku kungasentla malunga nokwaziswa komxholo onxulumene ne-FKM kunye ne-PTFE, ndiyathemba ukuba eli nqaku linokukunceda, sivela kwiingcali zaseTshayinaAbaboneleli ngemibhobho ye-PTFE, welcome to consult our products and please freely contact us at sales 07@zx-ptfe.com
Uphendlo olunxulumene nepayipi ye-ptfe:
Ixesha lokuthumela: Epreli-16-2021