I-PTFE (i-polytetrafluoroethylene)kunye ne-polyester (ezifana ne-PET, i-PBT, njl.njl.) zizinto ezimbini ze-polymer ezahluke ngokupheleleyo. Zinomahluko omkhulu kwisakhiwo seekhemikhali, iimpawu zokusebenza kunye neendawo zokusetyenziswa. Oku kulandelayo kukuthelekisa okuneenkcukacha:
1. Ulwakhiwo lweekhemikhali kunye nokwakheka kwazo
I-PTFE (i-polytetrafluoroethylene)
●Ulwakhiwo: Lwenziwe ngetsheyini yeathomu yekhabhoni kunye neathomu yefluorine egcwele ngokupheleleyo (-CF)₂-CF₂-), kwaye yi-fluoropolymer.
●Iimpawu: Ibhondi eqinileyo ye-carbon-fluorine iyenza ingangeni kakuhle kwiikhemikhali kwaye ikwazi ukumelana nemozulu.
I-Polyester
●Ulwakhiwo: Ikhonkco eliphambili liqulathe iqela le-ester (-COO-), njenge-PET (polyethylene terephthalate) kunye ne-PBT (polybutylene terephthalate).
●Iimpawu: Ibhondi ye-ester iyinika amandla amahle oomatshini kunye nokuqhubekeka kwayo, kodwa uzinzo lwayo lweekhemikhali luphantsi kunelo lwe-PTFE.
2. Uthelekiso lwentsebenzo
| Iimpawu | I-PTFE | I-Polyester (njenge-PET) |
| Ukumelana nobushushu | - Ubushushu bokusetyenziswa rhoqo: -200°C ukuya kwi-260°C | - I-PET: -40°C ukuya kwi-70°C (ixesha elide) |
| Uzinzo lweekhemikhali | Ayimelani phantse nazo zonke ii-asidi, ii-alkali kunye nezinyibilikisi ("inkosi yeplastiki") | Ayimelani nee-asidi ezibuthathaka kunye nee-alkali, idla ngokubola lula zii-asidi ezinamandla kunye nee-alkali |
| I-coefficient yokungqubana | Iphantsi kakhulu (0.04, iyazithambisa ngokwayo) | Ingaphezulu (ifuna izongezo ukuze iphuculwe) |
| Amandla oomatshini | Iphantsi, kulula ukuyirhubuluza | Ephakamileyo (i-PET idla ngokusetyenziswa kwiifayibha nakwiibhotile) |
| Iipropati zeDielectric | Igqwesile (izinto zokukhusela ezisetyenziswa rhoqo) | Ilungile (kodwa inovelwano kumswakama) |
| Ubunzima bokucubungula | Inkqubo yokunyibilikisa inzima (ifuna ukunyibilikiswa) | Ingafakwa kwaye ikhutshwe (kulula ukuyicubungula) |
Amasimi esicelo
I-PTFE: isetyenziswa kakhulu kwi-aerospace, kwizixhobo ze-elektroniki, kushishino lweekhemikhali, ekulungisweni kokutya, kwezonyango nakwezinye iindawo, isetyenziswa rhoqo ekwenzeni izitywino, iibheringi, iingubo, izinto zokwambathisa, njl.
I-Polyester: isetyenziswa kakhulu kwimicu yelaphu, kwiibhotile zeplastiki, kwiifilimu, kwiiplastiki zobunjineli nakwezinye iindawo
Iingcamango Eziqhelekileyo Ezingalunganga
Ingubo enganamatheliyo: I-PTFE (Teflon) isetyenziswa kakhulu kwiipani ezinganamatheliyo, ngelixa i-polyester ingenakumelana nokupheka kubushushu obuphezulu.
Intsimi yefayibha: Iifayibha zePolyester (ezifana nepolyester) zezona zinto ziphambili zempahla, kwayeIifayibha zePTFEzisetyenziselwa iinjongo ezikhethekileyo kuphela (ezifana neempahla zokukhusela iikhemikhali)
Isetyenziswa njani i-PTFE kwishishini lokutya?
I-PTFE (i-polytetrafluoroethylene) ineendlela ezahlukeneyo zokusetyenziswa kwishishini lokutya, ikakhulu ngenxa yozinzo lwayo oluhle kakhulu lweekhemikhali, ukumelana nobushushu obuphezulu, ukunganamatheli kunye nomlinganiselo ophantsi wokungqubana. Nazi iindlela eziphambili zokusetyenziswa kwe-PTFE kwishishini lokutya:
1. Ukwaleka kwezixhobo zokulungisa ukutya
I-PTFE coating isetyenziswa kakhulu ekulungiseni i-lining kunye nomphezulu wezixhobo zokucubungula ukutya. Ukunganamatheli kwayo kunokuthintela ukutya ekunamatheleni kumphezulu wezixhobo ngexesha lokucubungula, ngaloo ndlela kwenza kube lula inkqubo yokucoca kwaye kuphuculwe ukusebenza kakuhle kwemveliso. Umzekelo, kwizixhobo ezifana nee-oven, i-steamers, kunye ne-blenders, i-PTFE coating inokuqinisekisa ukuba ukutya akunamatheli ngexesha lokucubungula kubushushu obuphezulu ngelixa igcina ukuthembeka kunye nomgangatho wokutya.
2. Iibhanti zokuhambisa kunye neebhanti zokuhambisa
Iibhanti zokuhambisa ezigqunywe nge-PTFE kunye neebhanti zokuhambisa zihlala zisetyenziswa ekucubungulweni kokutya okuveliswa ngobuninzi, njengokupheka nokuhambisa amaqanda, ibhekoni, iisoseji, inkukhu, kunye neehamburger. Umlinganiselo ophantsi wokungqubana kunye nokumelana nobushushu obuphezulu kwale nto kwenza ukuba isebenze ngokuzinzileyo kwiindawo ezinobushushu obuphezulu ngaphandle kokubangela ungcoliseko ekutyeni.
3. Iipayipi zodidi lokutya
Iipayipi ze-PTFE zisetyenziswa kakhulu ekuthuthweni kokutya neziselo, kubandakanya iwayini, ibhiya, iimveliso zobisi, isiraphu kunye nezinongo. Ukungangeni kwayo kwiikhemikhali kuqinisekisa ukuba ayichaphazeli umgangatho weemveliso ezihanjiswayo kubushushu obuyi--60.°C ukuya kwi-260°C, kwaye ayivezi mbala, incasa okanye ivumba. Ukongeza, iipayipi ze-PTFE ziyahlangabezana nemigangatho ye-FDA ukuqinisekisa ukhuseleko lokutya.
4. Izitywino kunye neegasket
Izitywino zePTFE kunye neegasket zisetyenziswa ekuqhagamshelweni kwemibhobho, iivalvu kunye neepaddles zokuxuba izixhobo zokucubungula ukutya. Zinokumelana nokugqwala okuvela kwiikhemikhali ezahlukeneyo ngelixa zihlala zizinzile kwiindawo ezinobushushu obuphezulu. Ezi zitywino zinokuthintela ngokufanelekileyo ukutya ekungcolisweni ngexesha lokucubungula ngelixa zisenza kube lula ukucoca nokugcina izixhobo.
5. Izixhobo zokupakisha ukutya
I-PTFE ikwasetyenziswa kwizinto zokupakisha ukutya, ezifana neengubo ezinganamatheliyo epanini, iingubo zephepha lokubhaka, njl. Ezi zinto ziqinisekisa ukuba ukutya akunamatheli ngexesha lokupakisha nokupheka, ngelixa kugcinwa ucoceko nokhuseleko lokutya.
6. Ezinye izicelo
I-PTFE ingasetyenziswa nakwiigiya, iibhearing bushings kunye neenxalenye zeplastiki zobunjineli ekucutshungulweni kokutya, nto leyo enokuphucula ukumelana nokuguguleka kwezixhobo ngelixa inciphisa iindleko zokulungisa.
Izinto eziqwalaselweyo zokhuseleko
Nangona i-PTFE ineempawu ezininzi ezintle, kusafuneka uqaphele ukhuseleko lwayo xa uyisebenzisa kwishishini lokutya. I-PTFE inokukhupha iigesi ezinobungozi kumaqondo obushushu aphezulu, ngoko ke kuyimfuneko ukulawula amaqondo obushushu okusetyenziswa kwaye uphephe ukufudumeza amaqondo obushushu aphezulu ixesha elide. Ukongeza, kubalulekile ukukhetha izixhobo ze-PTFE ezihlangabezana neemfuno zomthetho ezifanelekileyo.
Ixesha leposi: Matshi-26-2025