PTFE e hana ho bola ka lik'hemik'hale ho feta PVDF kapa PE.Ha liathomo tse ngata tsa Fluorine li le mokokotlong, liprotheine tse ngata li ke ke tsa khona ho ts'oara ka lik'hemik'hale holim'a metsi.
Phapang e kholo lipakeng tsa PTFE le PVDF
| Polymer | PVDF | PTFE |
| Sebopeho | –[–CF2–CHF–]n– | –[–CF2–CF2]n– |
| Theknoloji ea Tlhahiso | phatlola | ho tjhesa kapa ho batang ha isostatic tobetsa le/kapa sintering |
| Tšebeliso ea li-Catalysts le/kapa tse ling | Cd, Ba, K | Ha ho letho |
| Theko | E itekanetseng | Phahameng |
| Boima [g/cm3] | 1.8 | 2.1 ho isa ho 2.3 |
| Sebaka se qhibidihang [°C] | 178 | 327 |
| Boemo ba Mocheso bakeng sa Tšebeliso [°C] | - ho tloha ho 60 ho isa ho 150 | - ho tloha ho 200 ho isa ho 260 |
| Matla a tšepe | 50 | 20 ho isa ho 35 |
| Ho hanyetsa Lik'hemik'hale | Ha ho lintlha tse ling tse fumanehang;e tšoanang le PTFE | E ikgethang.Ha e cha ebile e sa qollehe ho dihlarolli tsohle tse tsebahalang.E hlaseloa feela ke tšepe e qhibilihisitsoeng ea alkali le fluorine mochesong o phahameng. |
PTFE le PVDF (durapore) ka bobeli li sebelisoa ho li-membrane tsa filthara tse tlamang liprotheine (Millipore ka kotloloho).Ha re bua ka lik'hemik'hale li-polymer tse peli li fapana haholo ka lebaka la li-fluoride tse eketsehileng le boima ba limolek'hule.Lintho tsa bona tse tlamang liprotheine le tsona lia fapana.
Ka kakaretso, PTFE ha e 'thupa' ho feta PVDF, e seng thupa ho feta polyethylene (PE).PTFE e hana ho bola ka lik'hemik'hale ho feta PVDF kapa PE.U nepahetse ha u sheba sebopeho sa lik'hemik'hale.Ha liathomo tse ngata tsa Fluorine li le mokokotlong, liprotheine tse ngata li ke ke tsa khona ho ts'oara ka lik'hemik'hale holim'a metsi.Ho metha lintho tse kang contact angle ho tla tiisa sena.Ha ke tsebe hore na sebopeho sa pore sa lera se ama lintho hakae, empa ho ea ka pono ea lik'hemik'hale, ho na le phapang e hlakileng.
PTFE -poly tetra fluoro ethylene and PVDF -polyvinylidene fluoride both are polymers used for the hydrophobic property of the electrode to avoid flooding the cathode material( carbon cloth) .Haholo lithutong, ba sebelisa PTFE tharollo ho feta mefuta e meng ea tharollo...
Bobeli ba bona ba tsitsitse ho lekana.Nahana hore lebaka ke ho qetela electrode morpholoji, hobane PVDF setlamo se sebelisoa e le 'nete tharollo (sekhomaretsi), ha PTFE e' ngoe ke ho fanyeha le unsoluble nanosized likaroloana.
PVDF e sebetsa ho feta PTFE tlasa maemo a itseng.
PS: Haeba u batla sampole kapa lintlha tse ling mabapi le PTFE mold rod vs PTFE extruded rod, PTFE tubing, PTFE hose, le PTFE thepa, ka kopo ikopanye le rona.
Nako ea poso: Nov-10-2019