Kodi pali kusiyana kotani pakati pa PTFE, FEP ndi PFA?

PTFE ndi PFA ali ndi kulekerera kutentha kwakukulu poyerekeza ndi FEP.FEP ndi PFA ndizomveka, komabe PTFE ndi yowonekera.FEP ndi PFA zili ndi makina abwinoko poyerekeza ndi PTFE.Kusiyana kwakukulu ndi kusagwirizana ndi mankhwala, kukana kwa dzimbiri, permeability, ndi kuvomereza kwa FDA.

Pali mitundu yambiri ya fluoropolymers tsopano ndipo iliyonse ili ndi cholinga chosiyana.Kusiyanasiyana pang'ono kwamapangidwe a PTFE, FEP ndi PFA onse amapereka kusiyana komwe kumapereka mitundu ingapo ya zinthu zopanda ndodo.

PTFE

Polytetrafluoroethylene, kapena PTFE, anali woyamba mwa fluoropolymers kupanga kupanga.Mutha kudziwa dzina lake lodziwika bwino, polima, lomwe limapangidwa ndi kampani ya DuPont.

PTFE ndiyabwino kupanga zokutira zopanda ndodo pa zinthu zomwe zimagwiritsidwa ntchito kuphika ndi kuphika.Zipolopolo ndi dongosolo lotolera fumbi limagwiritsanso ntchito PTFE.Ndi hydrophobic, zakumwa sizinyowa PTFE chifukwa zimakhala ndi electronegativity.PTFE ndi malo okhawo omwe amadziwika kuti nalimata sangathe kumamatira.

FEP

Fluorinated ethylene propylene, kapena FEP, ndi yosiyana pang'ono ndi PTFE, ngakhale ili ndi mikhalidwe yofanana yosagwirizana ndi polima.

FEP ndi yofewa kuposa PTFE ndipo imasungunuka pa kutentha kochepa kotero kuti kuphika ndi kuphika sikukhala kofala.FEP ndi yowonekera kwambiri, kotero chirichonse chomwe chimaphimba chidzakhala chofanana ndi mtundu.FEP sichimva kuwala kwa dzuwa, kotero ndi yabwino kwa nyengo zonse

PFA

Kusiyana kwakukulu pakati pa perfluoroalkoxy alkanes, PFA, ndi PTFE ndi zolowa m'malo mwa alkoxy zomwe zimalola kuti polima asungunuke.

Pa mlingo wa molekyulu, PFA ili ndi unyolo wocheperako ku ma fluoropolymers ena.Ilinso ndi unyolo wapamwamba kwambiri kuposa ma fluoropolymers ena.PFA ili ndi atomu ya okosijeni m'mapangidwe ake.Zina ziwirizi zilibe izi.Kusiyana kumeneku kumapangitsa PFA kuyenda bwino, kukana kukwawa komanso kukhazikika kwamafuta.

PS: Lumikizanani nafe PTFE anamaliza mankhwala free chitsanzo