Bambance-bambance tsakanin ETFE da PTFE kayan
Teburin Abubuwan Ciki
ETFE (Ethylene-tetrafluoroethylene copolymer) da kuma PTFE (polytetrafluoroethylene) manyan nau'ikan fluoroplastics biyu ne, sun bambanta sosai a tsarin sinadarai, kaddarorin injina, halayen sarrafawa, da aikace-aikace. ETFE, yayin kiyayewa PTFE's m sinadaran juriya, muhimmanci inganta inji ƙarfi da aiki yi, amma ta zafin jiki juriya ne dan kadan m. PTFE, a daya bangaren, ya shahara saboda tsananin juriya da yanayin zafi da kwanciyar hankali, amma yana da wahala a sarrafa shi. Mai zuwa shine cikakken kwatancen biyun ta fuskoki da yawa.
Tsarin Sinadarai da Abubuwan Sirri
- PTFE: Polymerized daga tetrafluoroethylene monomers, tsarinsa na kwayoyin halitta gaba daya yana kunshe da kwayoyin fluorine. Yana da babban crystallinity kuma yana da ƙarfin rashin kuzarin sinadarai, yana ba shi lakabin "Sarkin Filastik."
- ETFE: Mai canza copolymer na ethylene da tetrafluoroethylene. Gabatar da sassan ethylene a cikin sarkar kwayoyin yana rage abun ciki na fluorine, ta haka yana inganta tauri da aiki, amma juriyarsa ta dan kadan kadan zuwa. PTFE.
Kwatanta Kayayyakin Injini
- Ƙarfafawa da Tauri: ETFE tana alfahari da ƙarfin ƙarfi har zuwa 50 MPa, sau biyu na na PTFE, da kuma elongation na 100% -300%, yana nuna kyakkyawar juriya mai tasiri; PTFE, a daya bangaren, yana da ɗan gaggautuwa amma yana da ƙarfin juriyar hawaye.
- Coefficient of Friction: Dukansu suna da ƙarancin ƙima na juzu'i, amma PTFE yana ba da juriya mafi girma, yayin da ETFE ya fi dacewa da abubuwan tsarin da ke buƙatar ƙarfin ƙarfi.
Ayyukan Gudanarwa
- ETFE: Narke-mai aiki (misali, extrusion, allura gyare-gyare), tare da ƙananan zafin jiki (240-270 ℃), dace da masana'anta hadaddun siffofi.
- PTFE: High narkewa batu (327 ℃) da kuma musamman high narke danko, yin narkewa-mai aiwatarwa; yawanci ana sarrafa su ta hanyar amfani da sintering ko latsawa, yana haifar da tsadar sarrafawa.
