PTFE imalimbana ndi dzimbiri kuposa PVDF kapena PE.Kuchuluka kwa maatomu a Fluorine pamsana, ndipamenenso mapuloteni ochulukirapo sangathe kukhazikika pamtunda.
Kusiyana kwakukulu pakati pa PTFE ndi PVDF
| Polima | Zithunzi za PVDF | PTFE |
| Kapangidwe | —[–CF2–CHF–]n– | —[–CF2–CF2]n– |
| Production Technology | kuwomba | kutentha kapena kuzizira isostatic kukanikiza ndi/kapena sintering |
| Kugwiritsa Ntchito Ma Catalysts ndi / kapena Zowonjezera Zina | Cd, Ba, K | Palibe |
| Mtengo | Wapakati | Wapamwamba |
| Kuchulukana [g/cm3] | 1.8 | 2.1 mpaka 2.3 |
| Malo osungunuka [°C] | 178 | 327 |
| Kutentha kwa Ntchito [°C] | - 60 mpaka 150 | -200 mpaka 260 |
| Kulimba kwamakokedwe | 50 | 20 mpaka 35 |
| Chemical Resistivity | Palibe zambiri zomwe zilipo;zofanana ndi PTFE | Exceptional.Incombustible and insolvable mu zosungunulira zonse zodziwika.Amagwidwa ndi zitsulo zosungunuka za alkali komanso fluorine pa kutentha kwakukulu. |
PTFE ndi PVDF (durapore) onse amagwiritsidwa ntchito mu mapuloteni omangira fyuluta nembanemba (Millipore makamaka).Kunena mwamankhwala ma polima awiriwa amasiyana kwambiri chifukwa cha ma fluoride owonjezera komanso kulemera kwa maselo.Mapangidwe awo omanga mapuloteni amasiyananso.
Nthawi zambiri, PTFE ndi 'yopanda ndodo' kuposa PVDF, yomwe imakhala yopanda ndodo kuposa polyethylene (PE).PTFE imalimbana ndi dzimbiri kuposa PVDF kapena PE.Mukulondola kuyang'ana kapangidwe ka mankhwala.Kuchuluka kwa maatomu a Fluorine pamsana, ndipamenenso mapuloteni ochulukirapo sangathe kukhazikika pamtunda.Kuyeza zinthu monga mbali yolumikizana kudzatsimikizira izi.Sindikudziwa kuchuluka kwa pore kwa nembanemba komwe kumakhudza zinthu, koma kuchokera kumalingaliro amankhwala, pali kusiyana koonekeratu.
PTFE -poly tetra fluoro ethylene ndi PVDF -polyvinylidene fluoride onse ndi ma polima omwe amagwiritsidwa ntchito popanga hydrophobic katundu wa elekitirodi kupewa kusefukira kwa zinthu za cathode (carbon cloth).Kawirikawiri m'maphunziro, akugwiritsa ntchito njira ya PTFE kuposa mitundu ina ya yankho…
Onse awiri ali okhazikika mokwanira.Ganizirani kuti chifukwa chake chiri mu electrode morphology yomaliza, chifukwa PVDF binder imagwiritsidwa ntchito ngati yankho lenileni (glue), pamene PTFE imodzi ndi kuyimitsidwa ndi tinthu tating'onoting'ono tomwe timatulutsa nanosized.
PVDF imakhala yofulumira kuposa PTFE nthawi zina.
PS: Ngati mukufuna chitsanzo kapena zambiri zokhudza PTFE kuumbidwa ndodo vs PTFE extruded ndodo, PTFE chubu, PTFE payipi, ndi PTFE zipangizo, chonde tilankhule nafe.
Nthawi yotumiza: Nov-10-2019