I-PTFE ixhathisa kakhulu kwikhemikhali kumhlwa kune-PVDF okanye i-PE.Okukhona iiathom zeFluorine kumqolo, kokukhona iiproteni ezininzi aziyi kukwazi ukuncamathela phezu komhlaba.
Umahluko omkhulu phakathi kwe-PTFE kunye ne-PVDF
| Ipolymer | PVDF | PTFE |
| Ulwakhiwo | –[–CF2–CHF–]n– | –[–CF2–CF2]n– |
| Iteknoloji yeMveliso | vuthela | Ucinezelo lwe-isostatic olushushu okanye olubandayo kunye/okanye nokuntywila |
| Ukusetyenziswa kweeCatalysts kunye/okanye ezinye izongezo | Cd, Ba, K | Akukho nanye |
| Ixabiso | Phakathi | Phezulu |
| Ubuninzi [g/cm3] | 1.8 | 2.1 ukuya ku-2.3 |
| Indawo yokunyibilika [°C] | 178 | 327 |
| UHlelo loBuqondo lweSicelo [°C] | -60 ukuya kwi-150 | -200 ukuya kuma-260 |
| Tensile strength | 50 | 20 ukuya ku-35 |
| Ukunyangwa kweMichiza | Akukho datha yimbi ekhoyo;iyafana ne-PTFE | Exceptional.Ingatsha kwaye ayinakusonjululwa kuzo zonke izinyibilikisi ezaziwayo.Kuhlaselwe kuphela ziintsimbi ezinyibilikisiweyo zealkali kunye nefluorine kumaqondo obushushu aphezulu. |
I-PTFE kunye ne-PVDF (i-durapore) zombini zisetyenziswa kwi-protein ebopha i-membrane zokucoca (i-Millipore ngokukodwa).Xa sithetha ngokwekhemikhali iipholima zimbini zohluka kakhulu ngenxa yokongezwa kwefluoride kunye nobunzima bemolekyuli.Iimpawu zabo zokubopha iiprotheni nazo ziyahluka.
Ngokubanzi, i-PTFE 'ayiyontonga' kune-PVDF, engentonga ngaphezu kwe-polyethylene (PE).I-PTFE ixhathisa kakhulu kwikhemikhali kumhlwa kune-PVDF okanye i-PE.Uchanekile ukujonga ubume bekhemikhali.Okukhona iiathom zeFluorine kumqolo, kokukhona iiproteni ezininzi aziyi kukwazi ukuncamathela phezu komhlaba.Ukulinganisa izinto ezifana ne-angle yoqhagamshelwano kuya kuqinisekisa oku.Andazi ukuba ingakanani i-pore structure ye-membrane echaphazela izinto, kodwa ngokwembono yemichiza, kukho umahluko ocacileyo.
I-PTFE -poly tetra fluoro ethylene kunye ne-PVDF -polyvinylidene fluoride zombini zipolymers ezisetyenziselwa ipropathi ye-hydrophobic ye-electrode ukuphepha ukukhukula kwezinto ze-cathode (ilaphu lekhabhoni) .
Omabini azinzile ngokwaneleyo.Cinga ukuba isizathu sikwi-morphology yokugqibela ye-electrode, kuba i-PVDF i-binder isetyenziswe njengesisombululo esiyinyani (iglue), ngelixa i-PTFE enye i-suspension ngamasuntswana angama-nanosized anganyibilikiyo.
I-PVDF iyasebenza ngakumbi kune-PTFE phantsi kweemeko ezithile.
PS: Ukuba ufuna isampuli okanye ulwazi olungaphezulu malunga PTFE intonga ebunjiweyo vs PTFE intonga extruded, PTFE ityhubhu, PTFE ithumbu, kunye nezixhobo PTFE, nceda uqhagamshelane nathi.
Ixesha lokuposa: Nov-10-2019