PTFE (polytetrafluoroethylene)uye polyester (yakadai sePET, PBT, nezvimwewo) zvinhu zviviri zvakasiyana zvachose zvepolymer. Vane misiyano yakakura muchimiro chemakemikari, maitiro ekuita uye minda yekushandisa. Iyi inotevera kuenzanisa kwakadzama:
1. Chimiro chemakemikari uye kuumbwa
PTFE (polytetrafluoroethylene)
●Chimiro: Inoumbwa neketani yekabhoni atomu uye atomu yefluorine iyo yakazara zvizere (-CF₂-CF₂-), uye iri fluoropolymer.
●Zvimiro: Iyo yakanyanya kusimba kabhoni-fluorine bond inoipa yakakwira yakakwirira makemikari inertness uye kuramba mamiriro ekunze.
Polyester
●Mamiriro: Iketani huru ine boka re ester (-COO-), rakadai sePET (polyethylene terephthalate) uye PBT (polybutylene terephthalate).
●Zvimiro: Iyo ester bond inopa iyo yakanaka mechanical simba uye processability, asi yayo kemikari kugadzikana yakaderera pane iyo yePTFE.
2. Kuenzanisa kwekuita
| Hunhu | PTFE | Polyester (yakadai sePET) |
| Kudzivisa kupisa | - Kuenderera mberi kwekushandisa tembiricha: -200°C kusvika 260°C | - PET: -40 ° C kusvika 70 ° C (nguva refu) |
| Kugadzikana kwemakemikari | Inopikisa kunenge ese maasidhi, alkali uye zvinonyungudutsa ("mambo wepurasitiki"). | Inopesana neasina simba acids uye alkalis, nyore kusvibiswa neakasimba acids uye alkalis |
| Friction coefficient | Zvakanyanya kuderera (0.04, kuzvizora) | Yakakwirira (inoda additives kuti ivandudze) |
| Mechanical simba | Yakaderera, nyore kukambaira | Yakakwirira (PET inowanzoshandiswa mumafiber nemabhodhoro) |
| Dielectric properties | Yakanakisa (yakakwira-frequency insulation material) | Yakanaka (asi inonzwa kune humidity) |
| Kugadzirisa kuoma | Zvakaoma kunyungudutsa nzira (inoda sintering) | Inogona jekiseni uye extruded (nyore kugadzirisa) |
Nzvimbo dzekushandisa
PTFE: Inoshandiswa zvakanyanya muaerospace, zvigadzirwa zvemagetsi, indasitiri yemakemikari, kugadzira chikafu, kurapwa uye mamwe minda, inowanzoshandiswa kugadzira zvisimbiso, mabheji, machira, insulating zvinhu, nezvimwe.
Polyester: inonyanya kushandiswa mumachira, mabhodhoro epurasitiki, mafirimu, einjiniya mapurasitiki nemimwe minda
Mafungiro Akajairika
Non-stick coating: PTFE (Teflon) inowanzoshandiswa mumapani asina-tsvimbo, nepo polyester haigoni kumira kupisa-kupisa.
Fiber field: Polyester fibers (yakadai sepolyester) ndiyo huru yezvipfeko, uyePTFE fiberszvinongoshandiswa kune zvakakosha (senge zvipfeko zvinodzivirira zvemakemikari)
PTFE inoshandiswa sei muindasitiri yechikafu?
PTFE (polytetrafluoroethylene) ine huwandu hwakawanda hwekushandisa muindasitiri yezvekudya, kunyanya nekuda kwekusimba kwayo kwemakemikari kugadzikana, kukwirira kwekushisa kwekushisa, kusanamatira uye kuderera kwakaderera coefficient. Izvi zvinotevera mashandisirwo makuru ePTFE muindasitiri yechikafu:
1. Food processing equipment coating
PTFE coating inoshandiswa zvakanyanya mumucheka uye pamusoro pekurapa kwechikafu chekugadzira michina. Kusanamatira kwayo kunogona kudzivirira chikafu kuti chisanamatira kumusoro kwemidziyo panguva yekugadziriswa, nekudaro kurerutsa maitiro ekuchenesa uye nekuvandudza kugadzirwa kwakanaka. Semuenzaniso, mumidziyo yakaita sevheni, steamers, uye mablender, PTFE coating inogona kuve nechokwadi kuti chikafu hachinamatira panguva yekupisa kwepamusoro-soro uchichengetedza kuvimbika uye kunaka kwechikafu.
2. Conveyor mabhandi uye conveyor mabhandi
PTFE-coated conveyor belts uye conveyor belts anowanzo shandiswa mukugadzirwa kwezvokudya zvakawanda, zvakadai sekubika nekutakura mazai, bhekoni, masoseji, huku, uye mahamburger. Iyo yakaderera coefficient ye friction uye yakakwirira tembiricha kuramba kwechinhu ichi chinoita kuti ishande zvakatsiga munzvimbo dzekushisa kwepamusoro pasina kukonzera kusvibiswa kwekudya.
3. Kudya-giredhi hoses
PTFE hoses anoshandiswa zvakanyanya kutakura chikafu uye zvinwiwa, zvinosanganisira waini, doro, zvigadzirwa zvemukaka, masirapi uye mwaka. Kemikari inertness yayo inovimbisa kuti haikanganise kunaka kwezvigadzirwa zvinofambiswa mutembiricha ye -60.°C kusvika ku260°C, uye haiunzi chero ruvara, kuravira kana kunhuwa. Uye zvakare, PTFE hoses inosangana neFDA zviyero kuve nechokwadi chekuchengetedza chikafu.
4. Zvisimbiso uye gaskets
PTFE zvisimbiso uye gaskets anoshandiswa mukubatanidza kwepombi, mavharuvhu uye anobvongodza paddles emidziyo yekugadzira chikafu. Vanogona kuramba ngura kubva kumakemikari akasiyana-siyana vachiramba vakagadzikana munzvimbo dzekushisa kwepamusoro. Zvisimbiso izvi zvinokwanisa kudzivirira chikafu kubva pakusvibiswa panguva yekugadziriswa uku kurerutsa kucheneswa nekugadzirisa kwemidziyo.
5. Zvokudya zvekuputira zvinhu
PTFE inoshandiswawo mukugadzira zvinhu zvekudya, zvakadai sezvisina-stick pan coatings, kubheka mapepa ekuputira, nezvimwewo. Zvinhu izvi zvinovimbisa kuti zvokudya hazvibatanidzi panguva yekuputira nekubika, nekuchengetedza hutsanana uye kuchengeteka kwezvokudya.
6. Zvimwe zvikumbiro
PTFE inogona zvakare kushandiswa mumagiya, inotakura bushings uye einjiniya epurasitiki zvikamu mukugadzirisa chikafu, izvo zvinogona kuvandudza kupfeka kuramba uye kushora kuramba kwemidziyo uku ichideredza mari yekugadzirisa.
Mifungo yekuchengeteka
Kunyangwe PTFE iine akawanda akanakisa zvivakwa, iwe uchiri kufanira kutarisisa kuchengetedzeka kwayo kana uchiishandisa muindasitiri yechikafu. PTFE inogona kuburitsa huwandu hwemagasi anokuvadza pakupisa kwakanyanya, saka zvinodikanwa kudzora tembiricha yekushandisa uye kudzivirira kupisa kwenguva refu kwepamusoro-tembiricha. Pamusoro pezvo, zvakakosha kuti usarudze zvinhu zvePTFE zvinosangana nezvinodiwa zvekutonga.
Nguva yekutumira: Mar-26-2025