PTFE nePFA vane kushivirira kwekushisa kwakasimudzwa mukuenzanisa neFEP.FEP nePFA zvakajeka, asi PTFE inopenya.FEP nePFA vane zvinhu zviri nani zvemuchina kana zvichienzaniswa nePTFE.Misiyano mikuru iri maererano nekusagadzikana kwekemikari, kusaora kwecorrosion, permeability, uye kubvumidzwa kweFDA.
Kune marudzi akawanda efluoropolymers ikozvino uye imwe neimwe ine chinangwa chakasiyana.Iwo misiyano midiki muchimiro chePTFE, FEP uye PFA zvese zvinopa misiyano inopa huwandu hwakawanda hwezvinhu zvisiri-tsvimbo.
PTFE
Polytetrafluoroethylene, kana PTFE, ndiyo yekutanga yezvakagadzirwa fluoropolymers kugadzirwa.Iwe unogona kuziva zita rayo rinonyanya kuzivikanwa, polymer, iyo inogadzirwa neDuPont kambani.
PTFE yakanakisa pakugadzira isina-tsvimbo coatings pazvinhu zvinoshandiswa pakubika nekubika.Bullets uye guruva rekuunganidza system inoshandisawo PTFE.Iyo hydrophobic, zvinwiwa hazvinyorove PTFE sezvo ine yakakwirira electronegativity.PTFE ndiyo chete inozivikanwa nzvimbo iyo chipembere hachigoni kunamira.
FEP
Fluorinated ethylene propylene, kana FEP, yakati siyanei nePTFE, kunyangwe ichine humwe humwe hunhu husina-tsvimbo hwepolymer.
FEP yakapfava kupfuura PTFE uye inonyunguduka patembiricha yakaderera saka kushandiswa kwekubikira nekubikira hakuna kufanana.FEP inoonekera zvakanyanya, saka chero yainovhara icharamba yakafanana neruvara.FEP haishingirwe nechiedza chezuva, saka yakanaka kune ese
PFA
Musiyano mukuru uripo pakati peperfluoroalkoxy alkanes, PFA, uye PTFE ndiyo alkoxy substituents inobvumira iyo polymer kunyungudutswa-kugadziriswa.
Pamwero wemolecular, PFA ine cheni diki kureba kune mamwe mafluoropolymers.Iyo zvakare ine cheni yakakwira entanglement kupfuura mamwe fluoropolymers.PFA ine atomu yeokisijeni muchimiro chayo.Vamwe vaviri havana izvi.Musiyano uyu muchimiro unopa PFA yakavandudzwa kuyerera, creep resistance uye kugadzikana kwekupisa.
PS: Bata isu kune PTFE yakapedza zvigadzirwa zvemahara sampuro
Nguva yekutumira: Aug-24-2017