Sebakeng sa kajeno sa liindasteri tse hlokang tlhokomelo, likarolo li lula li sutumelletsa meeli ea tsona.Lithempereichara tse feteletseng, khatello e phahameng le lik'hemik'hale tse matla ke a mang a mathata ao thepa e tobaneng le 'ona.Lits'ebetsong tsena, li-polymer tsa setso li atisa ho fokotseha, li nyenyefatsa kapa li lahleheloa ke ts'ebetso tlas'a mocheso o matla.Ka lehlohonolo, ho hlahile moloko o mocha oa li-polymers tse thibelang mocheso, tse fanang ka ts'ebetso e ikhethang libakeng tse nang le khatello e phahameng ea maikutlo.
Sengoliloeng sena se shebana le lefats'e la li-polymer tse sebetsang hantle, tse sa chese mocheso.Re tla hlahloba lisebelisoa tsa bohlokoa tse li etsang hore li tšoanelehe bakeng sa lits'ebetso tse boima, re buisane ka mefuta e fapaneng ea li-polymers tse thibelang mocheso, 'me re hlahlobe ts'ebeliso ea tsona ea lefats'e la nnete.
Ho utloisisa ho hanyetsa mocheso ho li-polymers
Ho hanyetsa mocheso, ho tsejoang hape e le botsitso ba mocheso, ho bolela bokhoni ba polymer ba ho boloka sebopeho le thepa ea eona ha e pepesehetse mocheso o phahameng.Sena ke sa bohlokoa bakeng sa ho netefatsa boits'oaro le ts'ebetso ea likarolo maemong a mocheso o phahameng.Lintho tse 'maloa li tlatsetsang ho hanyetsa mocheso oa polymer:
- Mocheso oa Phetoho ea Khalase (Tg):Ena ke thempereichara eo ho eona polima e fetohang ho tloha boemong bo thata, bo khanyang ho ea ho bo rabara ho feta.Li-polymers tse nang le boleng bo phahameng ba Tg li bonts'a ho hanyetsa mocheso hamolemo.
- Thermal Decomposition Temperature (Td):Ena ke mocheso oo polymer e qalang ho senyeha ka lik'hemik'hale.Li-polymers tse nang le litekanyetso tse phahameng tsa Td li ka mamella mocheso o phahameng oa ts'ebetso pele ho senyeha ho etsahala.
- Sebopeho sa Lik'hemik'hale:Tlhophiso e khethehileng ea liathomo le litlamo ka har'a ketane ea polymer e susumetsa botsitso ba eona ba mocheso.Li-polymers tse nang le li-covalent bond tse matla hangata li bonts'a khanyetso e ntle ea mocheso.
Mefuta ea li-Polymers tse thibelang mocheso
Li-polymer tse fapaneng tse sebetsang hantle li fana ka khanyetso e ikhethang ea mocheso bakeng sa lits'ebetso tse fapaneng.Mona ke tse ling tsa mefuta e tsebahalang haholo:
- Polyimide (PI):Li tsejoa ka botsitso ba tsona bo ikhethang ba mocheso, li-PI li ithorisa ka litekanyetso tse phahameng tsa Tg le Td.Li sebelisoa haholo sebakeng sa sefofane, lisebelisoa tsa elektroniki, le lits'ebetso tsa likoloi ka lebaka la thepa ea tsona e ntle haholo ea mochini le ha mocheso o le holimo.
- Polyetherketones (PEEK):PEEK e fana ka motsoako o tsotehang oa ho hanyetsa mocheso, ho hanyetsa lik'hemik'hale, le matla a mochine.E fumana lits'ebetso makaleng a batloang haholo joalo ka tlhahlobo ea oli le khase, likarolo tsa koloi le li-implants tsa bongaka.
- Fluoropolymers (PTFE, PFA, FEP):Lelapa lena la li-polymers, ho kenyeletsoa Teflon™, le bonts'a mocheso o ikhethang le khanyetso ea lik'hemik'hale.Hangata li sebelisoa ho kenya motlakase, lisebelisoa tsa ho tšoara metsi, le liphahlo tse sa tsitsang ka lebaka la thepa ea tsona e tlaase ea likhohlano.
- Silicone Polymers:Li-polymer tsena tse feto-fetohang li fana ka matla a ho hanyetsa mocheso, elasticity, le thepa ea ho kenya motlakase.Li sebelisoa haholo ho li-gaskets, li-seal, le li-hoses liindastering tse fapaneng.
- Thermoplastics e sebetsang hantle haholo (PEEK, PPS, PSU):Li-thermoplastic tsena tse tsoetseng pele li ithorisa ka ho hanyetsa mocheso, matla a mochini, le ho lieha ha lelakabe.Li sebelisoa le ho feta lits'ebetsong tse boima joalo ka likarolo tsa likoloi, likarolo tsa motlakase le meaho ea sefofane.
Lisebelisoa tsa Li-Polymers tse thibelang mocheso
Li-polymers tse thibelang mocheso li bapala karolo ea bohlokoa lits'ebetsong tse fapaneng tsa khatello ea maikutlo tse phahameng.Mehlala e meng ea bohlokoa ke ena:
- Sepakapaka:Likarolo tsa enjene, litšireletso tsa mocheso, le likarolo tsa sebopeho sefofaneng li hloka ho hanyetsa mocheso ka tsela e ikhethang ho mamella mocheso o feteletseng oa ts'ebetso.
- Tsa elektroniki:Liboto tsa potoloho tse hatisitsoeng, lihokelo tsa motlakase, le liphutheloana tsa IC li itšetlehile ka lipolima tse thibelang mocheso bakeng sa botsitso ba sebopeho le ts'ebetso e tšepahalang tlas'a mocheso.
- Tsa makoloi:Likarolo tsa enjene, likarolo tse ka tlas'a-hood, le lithaere tse sebetsang hantle li rua molemo ho li-polymer tse sa keneleng mocheso tse khonang ho sebetsana le mocheso o phahameng le maemo a thata.
- Patlisiso ea Oli le Khase:Likaroloana tsa liphaephe, liphaephe le litiiso tse sebelisoang ha ho ntšoa oli le khase li hloka thepa e khonang ho mamella mocheso le likhatello tse feteletseng.
- Ho sebetsa ka lik'hemik'hale:Li-reactors tsa lik'hemik'hale, litanka tsa polokelo le lisebelisoa tsa lipeipi li atisa ho sebetsana le maro a phahameng a mocheso le lik'hemik'hale, tse hlokang lipolima tse thibelang mocheso le lik'hemik'hale.
- Lisebelisoa tsa Bongaka:Lisebelisoa tsa bongaka tse kenngoeng, lisebelisoa tsa ho thibela likokoana-hloko, le lisebelisoa tsa ho buoa li hloka lisebelisoa tse ka mamellang ho hloekisoa ka thata le ho bolaea likokoana-hloko tse akarelletsang mocheso o phahameng.
Bokamoso ba Li-Polymers tse hanyetsanang le Mocheso
Boiteko ba lipatlisiso le nts'etsopele bo ntse bo tsoela pele ho sutumelletsa meeli ea ho hanyetsa mocheso ho li-polymers.Lisebelisoa tse ncha tse nang le boleng bo phahameng ba Tg le Td li ntse li ntlafatsoa, tse fanang ka menyetla e meng bakeng sa lits'ebetso tse phahameng haholo.Ho feta moo, ho tsepamisa maikutlo ho kenyelletsang melao-motheo ea ts'ebetso ho lebisa ho hlahlobisisoeng ha li-polymers tse thibelang mocheso oa bio bakeng sa sebaka se fokotsehileng sa tikoloho.
Qetello
Li-polymers tse thibelang mocheso li bapala karolo ea bohlokoa ho nolofatseng ts'ebetso e phahameng le likarolo tse ts'epahalang bakeng sa lits'ebetso tse hlokang indasteri.Ho utloisisa thepa ea bohlokoa le mefuta e fumanehang ho lumella baenjiniere le baqapi ho khetha thepa e loketseng litlhoko tse ikhethang.Ha thekenoloji e ntse e hatela pele, bokamoso bo na le ts'episo ea li-polymers tse sa keneleng mocheso le ho feta, tse ntseng li tsoela pele ho sutumelletsa meeli ea se ka fihlellehang libakeng tse nang le khatello e phahameng ea maikutlo.
Nako ea poso: 03-06-24