ʻOi aku ka maikaʻi o ka PTFE i ka corrosion ma mua o PVDF a i ʻole PE.ʻOi aku ka nui o nā ʻātoma Fluorine ma ka iwi kuamoʻo, ʻaʻole hiki ke hoʻopaʻa kemika ma luna o ka ilika.
ʻO ka ʻokoʻa nui ma waena o PTFE a me PVDF
| Polymer | PVDF | PTFE |
| Kapili | –[–CF2–CHF–]n– | –[–CF2–CF2]n– |
| ʻenehana hana | puhi | kaomi isostatic wela a i ʻole ke anu a/a i ʻole sintering |
| Hoʻohana i nā Catalysts a / a i ʻole nā mea hoʻohui ʻē aʻe | Cd, Ba, K | ʻAʻohe |
| Kumukuai | Kaumaha | Kiʻekiʻe |
| ʻO ka mānoanoa [g/cm3] | 1.8 | 2.1 i ka 2.3 |
| Ka helu hehee [°C] | 178 | 327 |
| Kaulana Mahana no ka noi [°C] | –60 a hiki i 150 | –200 a 260 |
| Ikaika U'i | 50 | 20 a 35 |
| Kū'ē Kemika | ʻAʻohe ʻikepili hou aʻe i loaʻa;like me PTFE | ʻAʻole hiki ke hoʻopau ʻia i loko o nā mea hoʻoheheʻe ʻike ʻia.Hoʻouka ʻia e nā metala alkali hoʻoheheʻe ʻia a me ka fluorine i nā wela kiʻekiʻe. |
Hoʻohana ʻia ʻo PTFE a me PVDF (durapore) i loko o nā membrane kānana hoʻopaʻa pūmua (Millipore kikoʻī).Ma ka ʻōlelo kemika, ʻokoʻa loa nā polymers ʻelua ma muli o nā fluoride hou a me ke kaumaha molekala.ʻOkoʻa nō hoʻi kā lākou mau waiwai hoʻopaʻa protein.
ʻO ka mea maʻamau, ʻoi aku ka ʻoi aku o ka PTFE ma mua o ka PVDF, ʻoi aku ka lāʻau ʻole ma mua o ka polyethylene (PE).ʻOi aku ka maikaʻi o ka PTFE i ka corrosion ma mua o PVDF a i ʻole PE.Pono ʻoe e nānā i ke ʻano kemika.ʻOi aku ka nui o nā ʻātoma Fluorine ma ka iwi kuamoʻo, ʻaʻole hiki ke hoʻopaʻa kemika ma luna o ka ilika.ʻO ke ana ʻana i nā mea e like me ke kihi pili e hōʻoia i kēia.ʻAʻole maopopo iaʻu i ka nui o ka hana pore o nā membrane e pili ana i nā mea, akā mai kahi hiʻohiʻona kemika, aia nā ʻokoʻa.
ʻO PTFE -poly tetra fluoro ethylene a me PVDF -polyvinylidene fluoride he mau polymers ʻelua i hoʻohana ʻia no ka waiwai hydrophobic o ka electrode e pale aku ai i ke kahe ʻana o ka mea cathode ( lole kalapona).
Ua kūpaʻa lāua ʻelua.E noʻonoʻo i ke kumu i loko o ka electrode morphology hope, no ka mea, hoʻohana ʻia ʻo PVDF binder ma ke ʻano he hopena ʻoiaʻiʻo (glue), ʻoiai ʻo PTFE kekahi he hoʻokuʻu me nā ʻāpana nanosized ʻole.
ʻOi aku ka wikiwiki o ka PVDF ma mua o ka PTFE ma lalo o kekahi mau kūlana.
PS: Inā makemake ʻoe i kahi laʻana a i ʻole ʻike hou aʻe e pili ana i ke koʻokoʻo i hoʻoheheʻe ʻia ʻo PTFE vs ke koʻokoʻo extruded PTFE, nā paipu PTFE, nā paipu PTFE, a me nā lako PTFE, e ʻoluʻolu e kelepona mai iā mākou.
Ka manawa hoʻouna: Nov-10-2019