PTFE (polytetrafluoroethylene)le polyester (e kang PET, PBT, joalo-joalo) ke lisebelisoa tse peli tse fapaneng ka ho feletseng tsa polymer. Li na le phapang e kholo ea sebopeho sa lik'hemik'hale, litšobotsi tsa ts'ebetso le masimo a kopo. E latelang ke papiso e qaqileng:
1. Sebopeho sa lik'hemik'hale le sebopeho
PTFE (polytetrafluoroethylene)
●Sebopeho: E entsoe ka ketane ea athomo ea carbon le athomo ea fluorine e tletseng ka ho feletseng (-CF₂-CF₂-), mme ke fluoropolymer.
●Likarolo: Khokahano e matla ka ho fetesisa ea carbon-fluorine e e fa ho se sebetse hantle ha lik'hemik'hale tse phahameng haholo le ho hanyetsa boemo ba leholimo.
Polyester
●Sebopeho: Ketane e kholo e na le sehlopha sa ester (-COO-), joalo ka PET (polyethylene terephthalate) le PBT (polybutylene terephthalate).
●Likarolo: Bond ea ester e fana ka matla a matle a mochini le ts'ebetso, empa botsitso ba eona ba lik'hemik'hale bo tlase ho feta ba PTFE.
2. Papiso ea ts'ebetso
| Litšobotsi | PTFE | Polyester (joalo ka PET) |
| Ho hanyetsa mocheso | - Mocheso o tsoelang pele oa tšebeliso: -200°C ho isa ho 260°C | - PET: -40°C ho isa ho 70°C (nako e telele) |
| Ho tsitsa ha lik'hemik'hale | E hanana le hoo e batlang e le li-acids tsohle, alkalis le solvents ("morena oa polasetiki"). | E hanyetsana le li-acid tse fokolang le li-alkalis, tse senyehang habonolo ke li-acid tse matla le alkalis |
| Coefficient ea likhohlano | E tlase haholo (0.04, e itlholisang) | E phahameng (e hloka li-additives ho ntlafatsa) |
| Matla a mochine | E tlase, ho bonolo ho e hula | E phahameng (PET hangata e sebelisoa ka likhoele le libotlolong) |
| Lintho tsa dielectric | E ntle haholo (lisebelisoa tse phahameng tsa maqhubu) | E ntle (empa e tsotella mongobo) |
| Bothata ba ho sebetsa | Ho thata ho qhibiliha (e hloka sintering) | E ka entoa le ho fetisoa (ho bonolo ho e sebetsa) |
Libaka tsa kopo
PTFE: e sebelisoa haholo sebakeng sa sefofane, lisebelisoa tsa elektronike, indasteri ea lik'hemik'hale, ts'ebetso ea lijo, meriana le masimo a mang, hangata a sebelisetsoang ho etsa litiiso, li-bearings, li-coatings, thepa ea ho itšireletsa, joalo-joalo.
Polyester: e sebelisoa haholo ka likhoele tsa masela, libotlolo tsa polasetiki, lifilimi, lipolasetiki tsa boenjiniere le masimo a mang
Maikutlo a Tloaelehileng a Fosahetseng
Ho roala ka ntle ho thupa: PTFE (Teflon) e atisa ho sebelisoa lipane tse sa thupeng, ha polyester e sitoa ho mamella ho pheha ha mocheso o phahameng.
Tšimo ea fiber: Likhoele tsa polyester (tse kang polyester) ke lisebelisoa tse ka sehloohong tsa liaparo, lePTFE likhoeleli sebelisetsoa merero e khethehileng feela (joalo ka liaparo tse sireletsang lik'hemik'hale)
PTFE e sebelisoa joang indastering ea lijo?
PTFE (polytetrafluoroethylene) e na le mefuta e mengata ea lisebelisoa tse sebelisoang indastering ea lijo, haholo-holo ka lebaka la botsitso ba eona ba lik'hemik'hale tse ntle haholo, ho hanyetsa mocheso o phahameng, ho se mamelle le coefficient e tlaase ea likhohlano. Tse latelang ke lits'ebetso tsa mantlha tsa PTFE indastering ea lijo:
1. Ho roala thepa ea ho lokisa lijo
Ho roala ha PTFE ho sebelisoa haholo ho leleng le ho phekola holim'a lisebelisoa tsa ho lokisa lijo. Ho se mamelle ha eona ho ka thibela lijo hore li se ke tsa khomarela holim'a thepa nakong ea ts'ebetso, ka hona ho nolofatsa mokhoa oa ho hloekisa le ho ntlafatsa katleho ea tlhahiso. Ka mohlala, lisebelisoa tse kang lionto, li-steamers le li-blenders, ho roala ha PTFE ho ka etsa bonnete ba hore lijo ha li khomarele nakong ea mocheso o phahameng ha li ntse li boloka botšepehi le boleng ba lijo.
2. Mabanta a conveyor le mabanta a conveyor
Mabanta a conveyor a koahetsoeng ka PTFE le mabanta a tsamaisang hangata a sebelisoa ha ho etsoa lijo tse ngata, joalo ka ho pheha le ho tsamaisa mahe, bacon, lisoseje, likhoho le li-hamburger. Coefficient e tlase ea likhohlano le ho hanyetsa mocheso o phahameng oa thepa ena ho etsa hore e sebetse ka mokhoa o tsitsitseng libakeng tse phahameng tsa mocheso ntle le ho baka tšilafalo ho lijo.
3. Li-hoses tsa boemo ba lijo
Li-hoses tsa PTFE li sebelisoa haholo bakeng sa ho tsamaisa lijo le lino, ho kenyeletsoa veine, biri, lihlahisoa tsa lebese, syrups le linoko. Boiketlo ba eona ba lik'hemik'hale bo tiisa hore ha bo ame boleng ba lihlahisoa tse fetisoang ka mocheso oa -60.°C ho isa ho 260°C, 'me ha e hlahise mmala, tatso kapa monko leha e le ofe. Ntle le moo, li-hoses tsa PTFE li kopana le litekanyetso tsa FDA ho netefatsa polokeho ea lijo.
4. Litiiso le li-gaskets
Litiiso tsa PTFE le li-gaskets li sebelisoa ho hokela liphaephe, li-valve le li-paddles tse susumetsang tsa lisebelisoa tsa ho lokisa lijo. Li ka hanela kutu ho tsoa ho mefuta e fapaneng ea lik'hemik'hale ha li ntse li lula li tsitsitse libakeng tse phahameng tsa mocheso. Litiiso tsena li ka thibela ka katleho hore lijo li se ke tsa silafala ha li ntse li sebetsa ha li ntse li nolofatsa ho hloekisa le ho hlokomela thepa.
5. Lisebelisoa tsa ho paka lijo
PTFE e boetse e sebelisoa ka thepa ea ho paka lijo, tse kang li-pan-coatings tse sa tsitsang, liphahlo tsa pampiri ea ho baka, joalo-joalo Lisebelisoa tsena li tiisa hore lijo ha li khomarele nakong ea ho paka le ho pheha, ha li ntse li boloka bohloeki le polokeho ea lijo.
6. Lisebelisoa tse ling
PTFE e ka boela ea sebelisoa ka likere, ho jara lihlahla le likarolo tsa polasetiki tsa boenjiniere ts'ebetsong ea lijo, tse ka ntlafatsang ho hanyetsa le ho senya ha thepa ha li ntse li fokotsa litšenyehelo tsa tlhokomelo.
Lintlha tsa polokeho
Le hoja PTFE e na le thepa e mengata e babatsehang, u ntse u lokela ho ela hloko polokeho ea eona ha u e sebelisa indastering ea lijo. PTFE e ka 'na ea lokolla trace ea likhase tse kotsi ka mocheso o phahameng, kahoo hoa hlokahala ho laola mocheso oa tšebeliso le ho qoba mocheso oa nako e telele oa mocheso o phahameng. Ntle le moo, ho bohlokoa ho khetha lisebelisoa tsa PTFE tse fihlelang litlhoko tse nepahetseng tsa taolo.
Nako ea poso: Mar-26-2025