Fluoroelastomers , eo hape e tsejoang e le FKM, ke mofuta oa rabara ea maiketsetso e nang le thepa e ikhethang ea ho tsofala ha leholimo le ozone. Litšobotsi tsena tse ikhethang li li etsa hore li tšoanelehe haholo bakeng sa lits'ebetso tsa ho tsamaea ka sefofane, moo ho pepesehela maemo a thata a tikoloho ho ke keng ha qojoa.
Ntho ea pele eo u lokelang ho e ela hloko ke boemo ba leholimo bo hanyetsanang le botsofali ba fluoroelastomers. Lisebelisoa tsena li tsebahala ka bokhoni ba tsona ba ho mamella ho pepesetsoa nako e telele mochesong o feteletseng, mahlaseli a kotsi a UV le maemo a mang a leholimo. Ho fapana le li-elastomer tsa setso, li-fluoroelastomers li bonts'a ho senyeha ho fokolang mme li boloka thepa ea tsona ea 'mele le kamora ho pepesehela maemo a leholimo a mabe nako e telele. Sena se li etsa hore e be tse loketseng ho sebelisoa ha ho tsamaisoa sefofane, moo lifofane le lifofa-sebakeng li leng tlas'a maemo a feto-fetohang a mocheso le ho pepesetsoa letsatsi kamehla.
Ntho e 'ngoe ea bohlokoa ea li-fluoroelastomers ke ho hanyetsa ha tsona ozone. Ozone, mofuta o matla oa oksijene o fumanehang sepakapakeng sa Lefatše, o ka baka tšenyo e kholo linthong tse ngata. Leha ho le joalo, li-fluoroelastomers li bontšitse khanyetso e tsotehang ea ho senyeha ha ozone. Ho tiea hona ho netefatsa bophelo bo bolelele le ho ts'epahala ha likarolo tse entsoeng ka li-fluoroelastomers lits'ebetsong tsa ho tsamaisa sefofane, moo ho pepesehela tikoloho e ruileng ea ozone ho tloaelehileng.
Ka botsofali ba tsona ba leholimo bo ikhethang le ho hanyetsa ozone, li-fluoroelastomers li fetohile tsa bohlokoa haholo indastering ea ho tsamaisa sefofane. Ba fumana lits'ebetso likarolong tse fapaneng tsa bohlokoa, ho kenyeletsoa litiiso, li-gaskets, li-O-rings le likarolo tse ling tsa ho tiisa. Bokhoni ba li-fluoroelastomers ho boloka ts'ebetso ea bona le bots'epehi maemong a phephetso bo bohlokoa bakeng sa ho netefatsa polokeho le ts'ebetso ea litsamaiso tsa ho tsamaisa sefofane.
Sehloohong sena, re tla hlahloba ka botlalo boemo ba leholimo bo hanyetsanang le botsofali le thepa ea ho hanyetsa ozone ea fluoroelastomers. Ho feta moo, re tla shebisisa mefuta e fapaneng ea ts'ebeliso ea lisebelisoa tsena tse ikhethang molemong oa ho tsamaisa sefofane. Ka ho utloisisa litšoaneleho tse ikhethang tsa li-fluoroelastomers, bahlahisi le baenjiniere ba ka etsa liqeto tse nang le tsebo mabapi le khetho ea thepa bakeng sa litsamaiso tsa ho tsamaisa sefofane, qetellong ba ntlafatsa ts'ebetso ea bona le ho ts'epahala.
Meteo ho hanyetsa botsofali ho Fluoroelastomers
Fluoroelastomers ke mofuta oa rabara ea maiketsetso e bonts'ang khanyetso e ikhethang ho botsofali ba leholimo. Thepa ena e ikhethang e li etsa hore li tšoanelehe haholo bakeng sa lits'ebetso tse fapaneng liindastering tse joalo ka likoloi, sefofane le ts'ebetso ea lik'hemik'hale. Botsofali ba boemo ba leholimo bo bolela ho senyeha ha thepa ka lebaka la ho pepesehela maemo a thata a tikoloho, ho kenyelletsa khanya ea letsatsi, mocheso, ozone le lik'hemik'hale. Tabeng ea li-fluoroelastomers, sebopeho sa tsona sa limolek'hule le sebopeho se kenya letsoho ho hanyetsaneng ha tsona ho matla le lintlha tsena.
E 'ngoe ea likarolo tsa bohlokoa tse nolofalletsang li-fluoroelastomers ho mamella botsofali ba leholimo ke hore li na le fluorine e ngata. Fluorine ena e phahameng ha e matlafatse ho hanyetsa ha tsona mochesong le lik'hemik'hale feela empa hape e fana ka khanyetso e babatsehang khahlanong le mahlaseli a ultraviolet (UV) a tsoang letsatsing. Mahlaseli a UV a ka baka ho senyeha le ho phatloha ha li-polymer ka nako, ho lebisang ho fokotseng ts'ebetso le nako ea bophelo. Leha ho le joalo, khanyetso ea tlhaho ea fluoroelastomers khahlanong le mahlaseli a UV e netefatsa bophelo ba bona bo bolelele le ha e le maemong a thata ka ho fetesisa a kantle.
Ntle le litaba tsa tsona tse phahameng tsa fluorine, li-fluoroelastomers le tsona li na le mokokotlo o ikhethang oa carbon-fluorine. Mokokotlo ona o kenya letsoho ho khanyeng ha bona ka tsela e ikhethang ea lik'hemik'hale, e leng ho etsang hore li se ke tsa senyeha haholo ke li-acids, li-bases, solvents le libeso. Ho hanyetsa hona ha tlhaselo ea lik'hemik'hale ho eketsa bokhoni ba bona ba ho mamella botsofali ba leholimo, kaha ho pepesehela lintho tse fapaneng tse silafatsang tikoloho le litšila ho ka potlakisa ho senyeha ha thepa.
Ho feta moo, li-fluoroelastomers li bonts'a botsitso bo botle ba mocheso, li li lumella ho boloka thepa ea tsona ea mochini ho feta mocheso o pharalletseng. Li khona ho mamella mocheso o feteletseng ntle le ho lahleheloa ke botsitso ba tsona kapa ho ba brittle. Botsitso bona ba mocheso bo bohlokoa lits'ebetsong moo li-fluoroelastomers li pepesetsoang mocheso o phahameng kapa ho fetoha ha mocheso, joalo ka li-engine seal, gaskets le O-rings.
Ho netefatsa ts'ebetso e nepahetseng ea li-fluoroelastomers maemong a botsofali ba leholimo, ho hlophisoa hantle le ho kopanya ho bohlokoa. Baetsi ba khetha ka hloko le ho kopanya metsoako e fapaneng ho theha li-fluoroelastomers tse nang le thepa e ikhethang le litšobotsi tsa ts'ebetso. Ts'ebetso ea ho kopanya e kenyelletsa ho kopanya fluoroelastomer le li-additives tse fapaneng, joalo ka li-agent tse phekolang, li-accelerator le li-filler, ho ntlafatsa thepa ea eona ea mochini, ts'ebetso le ho hanyetsa botsofali ba leholimo.
Ho hanyetsa Ozone ho Fluoroelastomers
Khanyetso ea Ozone ho li-fluoroelastomers ke ntlha ea bohlokoa eo u ka e nahanang ha u khetha lisebelisoa bakeng sa lits'ebetso tse fapaneng tsa indasteri. Fluoroelastomers, eo hape e tsejoang e le FKM kapa FPM, ke lisebelisoa tsa rabara tsa maiketsetso tse bonts'ang khanyetso e ikhethang ea ho senyeha ha ozone. Ozone, mofuta o sebetsang haholo oa oksijene, o ka baka tšenyo e kholo ea thepa, e lebisang ho fokotseng ts'ebetso le nako ea bophelo. Leha ho le joalo, li-fluoroelastomers li entsoe ka ho khetheha ho mamella litlamorao tse mpe tsa ho pepeseha ha ozone.
Sebopeho se ikhethileng sa limolek'hule tsa fluoroelastomers se phetha karolo ea bohlokoa ho hanyetsa ha tsona ozone. Lisebelisoa tsena li entsoe ka mokokotlo o entsoeng ka liathomo tsa carbon le fluorine. Ho ba teng ha liathomo tsa fluorine ho fana ka thibelo e babatsehang khahlanong le ho kenella ha ozone, ho thibela thepa hore e se ke ea senyeha. Ntle le moo, li-fluoroelastomers li na le khanyetso e ntle khahlanong le maemo a mang a tikoloho joalo ka mocheso, lik'hemik'hale le mocheso o feteletseng, e leng se etsang hore li fetohe haholo lits'ebetsong tse fapaneng tse hlokahalang.
O mong oa melemo ea mantlha ea li-fluoroelastomers mabapi le ho hanyetsa ozone ke bokhoni ba tsona ba ho boloka thepa ea bona ea mochini le kamora ho pepesehela ozone nako e telele. Ho fapana le li-elastomer tse ling, li-fluoroelastomers ha li thatafalloe haholo kapa li petsoha ha li pepesetsoa ozone, ho netefatsa bots'epehi le ts'ebetso ea thepa. Sena se bohlokoa haholo indastering moo lisebelisoa le lisebelisoa li pepesetsoang tikoloho e nang le ozone e ngata, joalo ka liindasteri tsa makoloi, sefofane, le oli le khase.
Ho feta moo, khanyetso e ikhethang ea ozone ea fluoroelastomers e kenya letsoho bophelong ba bona bo bolelele ba ts'ebeletso. Ka ho mamella litlamorao tse senyang tsa ozone, lisebelisoa tsena li ka boloka litšobotsi tsa tsona tsa ts'ebetso ka nako e telele, ho fokotsa tlhoko ea ho nkeloa sebaka khafetsa. Sena ha se boloke litšenyehelo feela empa se boetse se fokotsa nako ea ho theoha le ho netefatsa ts'ebetso e tsoelang pele ea litsamaiso tsa bohlokoa.
Ho netefatsa khanyetso e phahameng ea ozone, ho bohlokoa ho khetha motsoako o nepahetseng oa fluoroelastomer bakeng sa ts'ebeliso e 'ngoe le e' ngoe e ikhethileng. Lintlha tse kang mocheso, ho pepesehela lik'hemik'hale le khatello ea mochine li lokela ho nahanoa ha ho khethoa boitsebiso bo loketseng. Ntle le moo, litloaelo tse nepahetseng tsa moralo le boenjiniere, ho kenyelletsa tiiso e lekaneng le ts'ebetso ea ho tiisa sistimi, li bapala karolo ea bohlokoa ho holiseng ts'ebetso le nako ea bophelo ea likarolo tsa fluoroelastomer.
Lisebelisoa tsa Fluoroelastomers ho Aerospace Navigation
Fluoroelastomers e hlahile e le karolo ea bohlokoa indastering ea ho tsamaea ka sefofane, e fetolang tsela eo lifofane li tsamaeang ka eona sepakapakeng. Lisebelisoa tsena tse tsoetseng pele li fana ka khanyetso e ikhethang ho mocheso o feteletseng, lik'hemik'hale le mafura, e leng se etsang hore e be tse loketseng mefuta e mengata ea lisebelisoa sebakeng sena se boima.
E 'ngoe ea litšebeliso tsa mantlha tsa li-fluoroelastomers ho tsamaiseng sefofane ke ho etsa liqibi le li-gaskets. Likarolo tsena li bapala karolo ea bohlokoa ho netefatsa bots'epehi ba lits'ebetso tse fapaneng, joalo ka lithapo tsa mafura, li-hydraulic system le likarolo tsa enjine. Fluoroelastomers, ka khanyetso ea bona e ikhethang ho mafura le lik'hemik'hale, e fana ka tšitiso e tšepahalang khahlanong le ho lutla le ho bola, ho matlafatsa polokeho le ts'ebetso ea sefofane ka kakaretso.
Tšebeliso e 'ngoe ea bohlokoa ea li-fluoroelastomers ke lihokelo tsa motlakase le litsamaiso tsa likhoele. Ho tsamaea ka sefofane ho itšetlehile haholo ka lisebelisoa tse rarahaneng tsa motlakase bakeng sa puisano, ho tsamaisa le ho sebelisa lisebelisoa. Li-fluoroelastomers, tse nang le thepa ea tsona e ntle ea ho kenya motlakase, li thibela lipotoloho tse khutšoane le ho netefatsa phetisetso e tšepahalang ea matšoao, leha maemo a le thata. Sena ha se ntlafatse ts'ebetso ea litsamaiso tsa ho sesa feela empa hape se fokotsa kotsi ea ho senyeha ha motlakase.
Ho feta moo, li-fluoroelastomers li fumana tšebeliso e pharaletseng ha ho etsoa li-O-rings le litiiso bakeng sa litsamaiso tsa hydraulic. Litsamaiso tsena li bohlokoa bakeng sa ho laola motsamao oa likarolo tse fapaneng tsa sefofane, joalo ka lisebelisoa tse thellang, liphahlo le libaka tsa taolo. Khanyetso e ikhethang ea lik'hemik'hale ea fluoroelastomers e tiisa tiiso e tiileng le e tšoarellang, e thibelang ho lutla ha maro a hydraulic. Sena se kenya letsoho ho tšepahaleng ka kakaretso le polokeho ea sefofane nakong ea ho tsamaea.
Ntle le thepa ea bona e sebetsang, li-fluoroelastomers li boetse li fana ka melemo ea bohlokoa mabapi le ho fokotsa boima ba 'mele. Ho tsamaea ka sefofane ho hatisa tlhokahalo ea lisebelisoa tse bobebe ho ntlafatsa ts'ebetso ea mafura le ho fokotsa mesi. Li-fluoroelastomers, tse nang le tekanyo e phahameng ea matla ho boima ba 'mele, li fana ka tharollo e bobebe ntle le ho sekisetsa ts'ebetsong. Sena ha se thuse feela ho fokotsa boima ba sefofane ka kakaretso empa hape se kenya letsoho ho ntlafatseng bokhoni ba ho tsamaisa le ho eketsa bokhoni ba ho lefa.
Qetello
Fluoroelastomers e hanyetsana haholo le botsofali ba leholimo, e leng se etsang hore e be khetho e ratoang ho sebelisoa ha letsatsi, mocheso, ozone le lik'hemik'hale. Likahare tsa tsona tse phahameng tsa fluorine, sebopeho se ikhethang sa limolek'hule, khanyetso ea lik'hemik'hale, le botsitso ba mocheso li tlatsetsa bophelong ba tsona bo bolelele le ho tšepahala. Liindasteri li ka rua molemo ka ho utloisisa thepa ena le ho khetha li-fluoroelastomers bakeng sa lits'ebetso tse thibelang botsofali ba leholimo. Ho feta moo, li-fluoroelastomers li fana ka khanyetso e ikhethang ea ozone, e li etsang hore e be tse loketseng liindasteri tse amehileng ka ho pepeseha ha ozone. Ka ho khetha motsoako o nepahetseng oa fluoroelastomer le ho kenya ts'ebetsong mekhoa e nepahetseng ea meralo, liindasteri li ka nka monyetla oa ho hanyetsa ozone e phahameng e fanoang ke lisebelisoa tsena. Fluoroelastomers e boetse e bohlokoa indastering ea ho tsamaisa sefofane, e fana ka khanyetso maemong a feteletseng le ho netefatsa polokeho, ts'ebetso le ts'ebetso ea lifofane. Lisebelisoa tsena li sebelisoa ho li-seal, li-gaskets, li-connectors tsa motlakase, le li-hydraulic systems, ho khanna mekhoa e mecha le ho etsa hore maeto a sefofane a sireletsehe le ho tšepahala haholoanyane.
