I-PTFE (i-polytetrafluoroethylene)kanye ne-polyester (njenge-PET, i-PBT, njll.) yizinto ezimbili ezihluke ngokuphelele ze-polymer. Banomehluko omkhulu ekwakhekeni kwamakhemikhali, izici zokusebenza kanye nezinkambu zokufaka isicelo. Okulandelayo isiqhathaniso esinemininingwane:
1. Isakhiwo samakhemikhali kanye nokwakheka
I-PTFE (i-polytetrafluoroethylene)
●Isakhiwo: Yakhiwe iketango le-athomu ye-carbon kanye ne-athomu ye-fluorine egcwele ngokugcwele (-CF₂-CF₂-), futhi iyi-fluoropolymer.
●Izici: Ibhondi ye-carbon-fluorine eqine ngokwedlulele iyenza ingabi namandla kakhulu amakhemikhali kanye nokumelana nesimo sezulu.
I-polyester
●Isakhiwo: Iketango eliyinhloko liqukethe iqembu le-ester (-COO-), njenge-PET (i-polyethylene terephthalate) ne-PBT (i-polybutylene terephthalate).
●Izici: Ibhondi ye-ester iyinika amandla amahle okusebenza nokuqhubekela phambili, kodwa ukuqina kwayo kwamakhemikhali kungaphansi kwalokho kwe-PTFE.
2. Ukuqhathanisa ukusebenza
| Izici | I-PTFE | I-polyester (njenge-PET) |
| Ukumelana nokushisa | - Ukushisa kokusetshenziswa okuqhubekayo: -200°C kuya ku-260°C | I-PET: -40°C kuya ku-70°C (isikhathi eside) |
| Ukuzinza kwamakhemikhali | Imelana cishe nawo wonke ama-asidi, ama-alkali nezincibilikisi ("inkosi yepulasitiki"). | Imelana nama-asidi abuthakathaka nama-alkali, agqwaliswe kalula ama-asidi aqinile nama-alkali |
| I-friction coefficient | Kuphansi kakhulu (0.04, ukuzithambisa) | Okuphakeme (idinga izithasiselo ukuze ithuthuke) |
| Amandla omshini | Okuphansi, kulula ukukhasa | Iphakeme (i-PET ivame ukusetshenziswa kumafayibha namabhodlela) |
| Izici ze-Dielectric | Kuhle kakhulu (i-high-frequency insulation material) | Kuhle (kodwa kuyazwela kumswakama) |
| Ubunzima bokucubungula | Kunzima ukuncibilikisa inqubo (idinga i-sintering) | Ingajovwa futhi ikhishwe (kulula ukuyicubungula) |
Izinkambu zohlelo lokusebenza
I-PTFE: isetshenziswa kabanzi ku-aerospace, imishini kagesi, imboni yamakhemikhali, ukucubungula ukudla, ezokwelapha kanye neminye imikhakha, evame ukusetshenziselwa ukwenza izimpawu, ama-bearings, okokumboza, izinto zokuvikela, njll.
I-polyester: isetshenziswa kakhulu emiculweni yendwangu, amabhodlela epulasitiki, amafilimu, amapulasitiki obunjiniyela neminye imikhakha
Imibono Eyiphutha Evamile
I-non-stick coating: I-PTFE (Teflon) ivame ukusetshenziswa kumapani angagxili, kuyilapho i-polyester ayikwazi ukumelana nokupheka okushisa kakhulu.
I-Fiber field: Imicu ye-polyester (njenge-polyester) yizinto eziyinhloko zokugqoka, futhiImicu ye-PTFEzisetshenziselwa izinjongo ezikhethekile kuphela (njengezingubo zokuvikela amakhemikhali)
Isetshenziswa kanjani i-PTFE embonini yokudla?
I-PTFE (i-polytetrafluoroethylene) inohlu olubanzi lwezinhlelo zokusebenza embonini yokudla, ikakhulukazi ngenxa yokuqina kwayo okuhle kwamakhemikhali, ukumelana nokushisa okuphezulu, ukunganamatheli kanye ne-coefficient ephansi yokungqubuzana. Okulandelayo yizicelo eziphambili ze-PTFE embonini yokudla:
1. Ukufakwa kwemishini yokucubungula ukudla
I-PTFE coating isetshenziswa kakhulu olwelweni nasekuphathweni kwangaphezulu kwemishini yokucubungula ukudla. Ukunganamatheli kwayo kungavimbela ukudla ekubambeleleni ebusweni bemishini ngesikhathi sokucubungula, ngaleyo ndlela kube lula inqubo yokuhlanza nokwenza ngcono ukusebenza kahle kokukhiqiza. Isibonelo, ezintweni zokusebenza ezinjengamahhavini, ama-steamers, nama-blenders, ukunamathela kwe-PTFE kungaqinisekisa ukuthi ukudla akunamatheli ngesikhathi sokucubungula izinga lokushisa eliphezulu kuyilapho kugcinwa ubuqotho nekhwalithi yokudla.
2. Amabhande okuthutha kanye namabhande okuthutha
Amabhande okuthutha ane-PTFE namabhande okuthutha avame ukusetshenziswa ekucubunguleni ukudla okukhiqizwa ngobuningi, njengokupheka nokudlulisa amaqanda, ubhekeni, amasoseji, inkukhu, nama-hamburger. I-coefficient ephansi yokungqubuzana kanye nokumelana nezinga lokushisa eliphezulu kwalokhu kwaziswa kuyenza ikwazi ukusebenza ngokuzinza ezindaweni ezishisayo ngaphandle kokubangela ukungcoliswa kokudla.
3. Amapayipi ebanga lokudla
Amapayipi e-PTFE asetshenziswa kakhulu ukuthuthwa kokudla neziphuzo, okuhlanganisa iwayini, ubhiya, imikhiqizo yobisi, ama-syrups kanye nezinongo. Ukungangeni kwayo kwamakhemikhali kuqinisekisa ukuthi ayithinti ikhwalithi yemikhiqizo edluliswayo ebangeni lokushisa elingu--60°C kuya ku-260°C, futhi akethuli noma yimuphi umbala, ukunambitheka noma iphunga. Ngaphezu kwalokho, amapayipi e-PTFE ahlangabezana namazinga e-FDA ukuze kuqinisekiswe ukuphepha kokudla.
4. Seals kanye gaskets
Izigxivizo ze-PTFE kanye nama-gaskets asetshenziswa ekuxhumekeni kwamapayipi, ama-valve nama-paddles anyakazayo wemishini yokucubungula ukudla. Bangakwazi ukumelana nokugqwala okuvela ezinhlobonhlobo zamakhemikhali kuyilapho bezinzile endaweni yokushisa ephezulu. Lezi zimpawu zingavimbela ngokuphumelelayo ukudla ekungcolisweni ngesikhathi sokucubungula ngenkathi kwenziwa lula ukuhlanzwa nokugcinwa kwezinto zokusebenza.
5. Izinto zokupakisha ukudla
I-PTFE iphinde isetshenziswe ezintweni zokupakisha zokudla, njengezingubo zepani ezingezona izinti, izigqoko zephepha lokubhaka, njll. Lezi zinto ziqinisekisa ukuthi ukudla akunamatheli ngesikhathi sokupakisha nokupheka, kuyilapho kugcinwa ukuhlanzeka nokuphepha kokudla.
6. Ezinye izinhlelo zokusebenza
I-PTFE ingasetshenziswa futhi kumagiya, ama-bushings kanye nezingxenye zepulasitiki zobunjiniyela ekucubunguleni ukudla, okungathuthukisa ukumelana nokuguga nokumelana nokugqwala kwemishini ngenkathi kunciphisa izindleko zokuyilungisa.
Ukucatshangelwa kokuphepha
Nakuba i-PTFE inezakhiwo eziningi ezinhle kakhulu, kusadingeka ukuthi unake ukuphepha kwayo lapho uyisebenzisa embonini yokudla. I-PTFE ingase ikhulule ukulandelela amanani amagesi ayingozi emazingeni okushisa aphezulu, ngakho-ke kuyadingeka ukulawula izinga lokushisa lokusetshenziswa futhi ugweme ukushisisa kwesikhathi eside kwezinga lokushisa eliphezulu. Ngaphezu kwalokho, kubalulekile ukukhetha izinto ze-PTFE ezihlangabezana nezidingo ezifanele zokulawula.
Isikhathi sokuthumela: Mar-26-2025