I-PTFE (i-polytetrafluoroethylene)kanye ne-polyester (njenge-PET, i-PBT, njll.) ziyizinto ezimbili ze-polymer ezihluke ngokuphelele. Zinomehluko omkhulu ekwakhiweni kwamakhemikhali, izici zokusebenza kanye nezinkambu zokusetshenziswa. Okulandelayo ukuqhathanisa okuningiliziwe:
1. Isakhiwo samakhemikhali kanye nokwakheka kwawo
I-PTFE (i-polytetrafluoroethylene)
●Isakhiwo: Sakhiwe ngochungechunge lwe-athomu yekhabhoni kanye ne-athomu ye-fluorine egcwele ngokugcwele (-CF)₂-CF₂-), futhi iyi-fluoropolymer.
●Izici: Isibopho esinamandla kakhulu se-carbon-fluorine senza kube nokungangeni kwamakhemikhali okuphezulu kakhulu kanye nokumelana nesimo sezulu.
I-Polyester
●Isakhiwo: Iketanga eliyinhloko liqukethe iqembu le-ester (-COO-), njenge-PET (polyethylene terephthalate) kanye ne-PBT (polybutylene terephthalate).
●Izici: Isibopho se-ester siyinika amandla amahle okusebenza kanye nokucutshungulwa, kodwa ukuzinza kwamakhemikhali ayo kuphansi kunokwe-PTFE.
2. Ukuqhathaniswa kokusebenza
| Izici | I-PTFE | I-Polyester (njenge-PET) |
| Ukumelana nokushisa | - Izinga lokushisa lokusetshenziswa okuqhubekayo: -200°C kuya ku-260°C | - I-PET: -40°C kuya ku-70°C (isikhathi eside) |
| Ukuqina kwamakhemikhali | Imelana cishe nawo wonke ama-asidi, ama-alkali kanye nezinyibilikisi ("inkosi yepulasitiki") | Imelana nama-asidi abuthakathaka nama-alkali, iguguleka kalula ngama-asidi aqinile nama-alkali |
| I-coefficient yokushayisana | Kuphansi kakhulu (0.04, okuzigcobayo) | Okuphezulu (kudinga izithasiselo ukuze kuthuthukiswe) |
| Amandla omshini | Kuphansi, kulula ukugwinya | Ephakeme (i-PET ivame ukusetshenziswa kuma-fiber nasemabhodleleni) |
| Izakhiwo ze-dielectric | Okuhle kakhulu (izinto zokuvikela ezivame kakhulu) | Kuhle (kodwa kuyazwela emswakama) |
| Ubunzima bokucubungula | Inqubo enzima yokuncibilikisa (idinga ukushiswa) | Ingafakwa futhi ikhishwe (kulula ukuyicubungula) |
Izinkambu zohlelo lokusebenza
I-PTFE: isetshenziswa kabanzi ezindiza, imishini kagesi, imboni yamakhemikhali, ukucubungula ukudla, imikhakha yezokwelapha neminye, ivame ukusetshenziswa ukwenza izivalo, amabheringi, izembozo, izinto zokuvikela, njll.
I-Polyester: isetshenziswa kakhulu kumafayibha ezindwangu, amabhodlela epulasitiki, amafilimu, amapulasitiki obunjiniyela kanye neminye imikhakha
Imibono Engalungile Evamile
Ukugqoka okunganamatheli: I-PTFE (Teflon) ivame ukusetshenziswa emabhodweni anganamatheli, kanti i-polyester ayikwazi ukumelana nokupheka okushisa okuphezulu.
Insimu yefayibha: Imicu ye-polyester (njenge-polyester) yizinto eziyinhloko zokugqoka, futhiImicu ye-PTFEzisetshenziselwa izinjongo ezikhethekile kuphela (njengezingubo zokuzivikela zamakhemikhali)
I-PTFE isetshenziswa kanjani embonini yokudla?
I-PTFE (i-polytetrafluoroethylene) inezinhlobo eziningi zezicelo embonini yokudla, ikakhulukazi ngenxa yokuqina kwayo okuhle kwamakhemikhali, ukumelana nokushisa okuphezulu, ukunganamatheli kanye ne-coefficient ephansi yokungqubuzana. Lokhu okulandelayo yizindlela eziyinhloko zokusebenzisa i-PTFE embonini yokudla:
1. Ukugqoka imishini yokucubungula ukudla
Isembozo se-PTFE sisetshenziswa kabanzi ekuphatheni ulwelwesi kanye nobuso bemishini yokucubungula ukudla. Ukunganamatheli kwayo kungavimbela ukudla ukuthi kunamathele ebusweni bemishini ngesikhathi sokucubungula, ngaleyo ndlela kube lula inqubo yokuhlanza futhi kuthuthukiswe ukusebenza kahle kokukhiqiza. Isibonelo, emishinini efana nama-oven, ama-steamer, nama-blender, isembozo se-PTFE singaqinisekisa ukuthi ukudla akunamatheli ngesikhathi sokucubungula okushisa okuphezulu ngenkathi kugcinwa ubuqotho kanye nekhwalithi yokudla.
2. Amabhande okuthutha kanye namabhande okuthutha
Amabhande okuhambisa ambozwe nge-PTFE kanye namabhande okuhambisa avame ukusetshenziswa ekucubungulweni kokudla okukhiqizwa ngobuningi, njengokupheka nokuhambisa amaqanda, ubhekeni, amasoseji, inkukhu, nama-hamburger. I-coefficient ephansi yokungqubuzana kanye nokumelana nokushisa okuphezulu kwalokhu kwenza kube lula ukusebenza kahle ezindaweni ezinokushisa okuphezulu ngaphandle kokubangela ukungcola ekudleni.
3. Amapayipi okudla asezingeni lokudla
Amapayipi e-PTFE asetshenziswa kabanzi ekuthuthweni kokudla neziphuzo, okuhlanganisa iwayini, ubhiya, imikhiqizo yobisi, amasiraphu nezinongo. Ukungangeni kwawo kwamakhemikhali kuqinisekisa ukuthi akuthinti ikhwalithi yemikhiqizo ehanjiswayo ebangeni lokushisa elingu--60°C kuya ku-260°C, futhi ayivezi noma yimuphi umbala, ukunambitheka noma iphunga. Ngaphezu kwalokho, amapayipi e-PTFE ahlangabezana nezindinganiso ze-FDA ukuqinisekisa ukuphepha kokudla.
4. Izivalo nama-gasket
Izivalo ze-PTFE nama-gasket zisetshenziswa ekuxhumeni amapayipi, ama-valve kanye nama-paddle okuxuba emishini yokucubungula ukudla. Zingamelana nokugqwala okuvela kumakhemikhali ahlukahlukene ngenkathi zihlala zizinzile ezindaweni ezinokushisa okuphezulu. Lezi zivalo zingavimbela ngempumelelo ukudla ukuthi kungangcoliswa ngesikhathi sokucubungula ngenkathi zenza kube lula ukuhlanza nokugcinwa kwemishini.
5. Izinto zokupakisha ukudla
I-PTFE isetshenziswa nasezintweni zokupakisha ukudla, njengezinto zokugqoka epanini ezinganamatheli, izinto zokugqoka ephepheni lokubhaka, njll. Lezi zinto ziqinisekisa ukuthi ukudla akunamatheli ngesikhathi sokupakisha nokupheka, kuyilapho kugcinwa inhlanzeko nokuphepha kokudla.
6. Ezinye izinhlelo zokusebenza
I-PTFE ingasetshenziswa futhi kumagiya, ama-bearing bushings kanye nezingxenye zepulasitiki zobunjiniyela ekucubungulweni kokudla, okungathuthukisa ukumelana nokuguguleka kwemishini ngenkathi kunciphisa izindleko zokulungisa.
Izinto okufanele uzicabangele ngokuphepha
Nakuba i-PTFE inezakhiwo eziningi ezinhle kakhulu, kusadingeka uqaphele ukuphepha kwayo uma uyisebenzisa embonini yokudla. I-PTFE ingakhipha inani elincane lamagesi ayingozi emazingeni okushisa aphezulu, ngakho-ke kuyadingeka ukulawula izinga lokushisa lokusetshenziswa nokugwema ukushisa okuphezulu kwesikhathi eside. Ngaphezu kwalokho, kubalulekile ukukhetha izinto ze-PTFE ezihlangabezana nezidingo zomthetho ezifanele.
Isikhathi sokuthunyelwe: Mashi-26-2025