PTFE (polytetrafluoroethylene)ndi poliyesitala (monga PET, PBT, etc.) ndi zinthu ziwiri zosiyana kotheratu polima. Ali ndi kusiyana kwakukulu pamapangidwe amankhwala, mawonekedwe a magwiridwe antchito ndi magawo ogwiritsira ntchito. Kufanizitsa uku mwatsatanetsatane:
1. Kapangidwe ka mankhwala ndi kapangidwe
PTFE (polytetrafluoroethylene)
●Kapangidwe: Zimapangidwa ndi tcheni cha atomu ya kaboni ndi atomu ya fluorine yomwe ili yodzaza (-CF)₂-CF₂-), ndipo ndi fluoropolymer.
●Mawonekedwe: Chomangira champhamvu kwambiri cha carbon-fluorine chimapangitsa kusakhazikika kwamphamvu kwamankhwala komanso kukana nyengo.
Polyester
●Kapangidwe: Unyolo waukulu uli ndi gulu la ester (-COO-), monga PET (polyethylene terephthalate) ndi PBT (polybutylene terephthalate).
●Mbali: Chomangira cha ester chimapereka mphamvu yabwino yamakina ndi kutheka, koma kukhazikika kwake kwamankhwala ndikotsika kuposa kwa PTFE.
2. Kuyerekeza kwa magwiridwe antchito
| Makhalidwe | PTFE | Polyester (monga PET) |
| Kukana kutentha | - Kugwiritsa ntchito kosalekeza kutentha: -200°C mpaka 260°C | - PET: -40 ° C mpaka 70 ° C (nthawi yayitali) |
| Kukhazikika kwamankhwala | Kugonjetsedwa ndi pafupifupi ma asidi onse, alkalis ndi zosungunulira ("pulasitiki mfumu"). | Kugonjetsedwa ndi zofooka zidulo ndi alkalis, mosavuta dzimbiri ndi zidulo amphamvu ndi alkalis |
| Friction coefficient | Zotsika kwambiri (0.04, zodzipaka zokha) | Zapamwamba (zikufunika zowonjezera kuti ziwongolere) |
| Mphamvu zamakina | Zochepa, zosavuta kukwawa | Zapamwamba (PET nthawi zambiri imagwiritsidwa ntchito mu ulusi ndi mabotolo) |
| Dielectric katundu | Zabwino kwambiri (zapamwamba kwambiri zotsekera) | Zabwino (koma zimakhudzidwa ndi chinyezi) |
| Kuvuta kukonza | Zovuta kusungunula (zikufunika sintering) | Itha kubayidwa ndikutulutsidwa (yosavuta kuyipanga) |
Minda yofunsira
PTFE: chimagwiritsidwa ntchito muzamlengalenga, zipangizo zamagetsi, makampani mankhwala, processing chakudya, mankhwala ndi madera ena, nthawi zambiri ntchito zisindikizo, mayendedwe, zokutira, zipangizo insulating, etc.
Polyester: makamaka ntchito ulusi nsalu, mabotolo pulasitiki, mafilimu, mapulasitiki engineering ndi zina
Maganizo Olakwika Odziwika
Kupaka kopanda ndodo: PTFE (Teflon) imagwiritsidwa ntchito kwambiri m'mapoto osamata, pomwe poliyesitala sangathe kupirira kutentha kwambiri.
Munda wa CHIKWANGWANI: Ulusi wa poliyesitala (monga poliyesitala) ndiye zida zazikulu zopangira zovala, ndiZithunzi za PTFEamagwiritsidwa ntchito pazinthu zapadera zokha (monga zovala zoteteza mankhwala)
Kodi PTFE imagwiritsidwa ntchito bwanji pamakampani azakudya?
PTFE (polytetrafluoroethylene) ili ndi ntchito zambiri m'makampani azakudya, makamaka chifukwa cha kukhazikika kwake kwamankhwala, kukana kutentha kwambiri, kusamata komanso kugundana kocheperako. Zotsatirazi ndizomwe zimagwiritsidwa ntchito kwambiri ndi PTFE m'makampani azakudya:
1. Kupaka zida zopangira chakudya
PTFE ❖ kuyanika chimagwiritsidwa ntchito akalowa ndi pamwamba mankhwala zida pokonza chakudya. Kusamamatira kwake kumatha kulepheretsa chakudya kumamatira pamwamba pa zida panthawi yokonza, potero kumathandizira kuyeretsa komanso kukonza bwino kupanga. Mwachitsanzo, mu zipangizo monga uvuni, steamers, ndi blenders, PTFE zokutira akhoza kuonetsetsa kuti chakudya siimamatira pa kutentha kwambiri pokonza ndi kusunga kukhulupirika ndi khalidwe la chakudya.
2. Malamba otengera ma conveyor ndi malamba onyamula katundu
Malamba omata ndi malamba omata ndi PTFE amagwiritsidwa ntchito pokonza chakudya chochuluka, monga kuphika ndi kutumiza mazira, nyama yankhumba, soseji, nkhuku, ndi ma hamburger. Kutsika kocheperako komanso kukana kutentha kwa zinthu izi kumathandizira kuti zizitha kugwira ntchito mokhazikika m'malo otentha kwambiri popanda kuwononga chakudya.
3. Mipaipi ya chakudya
PTFE mapaipi chimagwiritsidwa ntchito ponyamula chakudya ndi zakumwa, kuphatikizapo vinyo, mowa, mkaka, manyuchi ndi zokometsera. Kukhalapo kwake kwamankhwala kumatsimikizira kuti sikukhudza mtundu wa zinthu zomwe zimaperekedwa pakutentha kwa -60°C ku 260°C, ndipo sayambitsa mtundu uliwonse, kukoma kapena fungo lililonse. Kuphatikiza apo, mapaipi a PTFE amakwaniritsa miyezo ya FDA kuti atsimikizire chitetezo cha chakudya.
4. Zisindikizo ndi gaskets
Zisindikizo za PTFE ndi ma gaskets amagwiritsidwa ntchito polumikiza mapaipi, mavavu ndi ma paddles oyendetsa zida zopangira chakudya. Amatha kukana dzimbiri kuchokera kumankhwala osiyanasiyana pomwe amakhalabe okhazikika m'malo otentha kwambiri. Zisindikizozi zimatha kuteteza chakudya kuti zisaipitsidwe panthawi yokonza komanso kuyeretsa ndi kukonza zida.
5. Zida zoyikamo chakudya
PTFE imagwiritsidwanso ntchito pazinthu zopangira chakudya, monga zokutira poto, zopaka mapepala ophika, ndi zina zotero. Zidazi zimatsimikizira kuti chakudya sichimamatira panthawi yonyamula ndi kuphika, ndikusunga ukhondo ndi chitetezo cha chakudya.
6. Ntchito zina
PTFE itha kugwiritsidwanso ntchito mu magiya, kunyamula bushings ndi uinjiniya mbali za pulasitiki pokonza chakudya, zomwe zimatha kupititsa patsogolo kukana komanso kukana dzimbiri kwa zida ndikuchepetsa mtengo wokonza.
Zolinga zachitetezo
Ngakhale PTFE ili ndi katundu wabwino kwambiri, muyenerabe kulabadira chitetezo chake mukamagwiritsa ntchito mumakampani azakudya. PTFE akhoza kumasula kuchuluka kwa mpweya woipa pa kutentha kwambiri, choncho m'pofunika kulamulira kutentha ntchito ndi kupewa Kutentha kwa nthawi yaitali mkulu-kutentha. Kuphatikiza apo, ndikofunikira kusankha zida za PTFE zomwe zimakwaniritsa zofunikira pakuwongolera.
Nthawi yotumiza: Mar-26-2025