PTFE vs PFA

PFA, kana Perfluoroalkoxy, imhando yefluoropolymer.Iyo ine zvimiro zvakafanana zvakanyanya seyakajairika polytetrafluoroethylene (PTFE), inova ndiyo inonyanya kuzivikanwa fomu yepolymer.PFA yakaumbwa neDuPont Co uye yakapihwa zita remhando yepolymer PFA.Chii chinochisiyanisa kubva kumareni ePTFE ndechekuti PFA inonyungudika inogadziriswa.Izvi zvinoitwa kuburikidza neyakajairwa jekiseni molding pamwe ne screw extrusion maitiro.

Polytetrafluoroethylene (PTFE), zvakare inogadzirwa fluoropolymer ye tetrafluoroethylene.DuPont Co ndiyo inonyanya kuzivikanwa mugadziri wePTFE, iyo, sezvambotaurwa, ndiyo zvinhu zvinozivikanwa nevanhu vazhinji sepolymer.Kuvaka kubva pakuwanikwa netsaona kwaRoy Plunkett, PTFE imhando yepamusoro-molecular-uremu inoumbwa nekabhoni uye fluorine.Chaizvoizvo, iine fluorocarbon solid.Iyo inonzi hydrophobic, zvichireva kuti mvura kana zvinhu zvine mvura zvinogona kunyorova nekuda kwehunhu hwefluorocarbon hwekudzikisa masimba ekuparadzira eLondon.Saka, PTFE ine yakaderera kwazvo coefficient yekukwesha kana yasangana neyakaoma.Izvi zvinokonzerwa nepamusoro pe electronegativity ye fluorine.Kunze kwepolymer, PTFE inowanzonzi Fluon uye Syncolon.

olytetrafluoroethylene (PTFE) ndeyekugadzira fluoropolymer ye tetrafluoroethylene ine akawanda maapplication.

Perfluoroalkoxy alkanes (PFA) is a copolymer of hexafluoropropylene and perfluoroethers.Imwe inowanzozivikanwa PFA formulation ipolymer PFA.

PFA ine zvivakwa zvakafanana nePTFE, kunyangwe musiyano mukuru pakati pePTFE nePFA ndewekuti PFA inonyungudika-yakagadziriswa.Izvi zvinoitwa kuburikidza neyakajairwa jekiseni molding pamwe ne screw extrusion maitiro.

PTFE inonyanya kushandiswa seisina-tsvimbo yekupotera pamapani uye zvinhu zvakawanda zvemazuva ano zvekubika.PTFE inowanzoshandiswa mumidziyo uye mapaipi ekubata makemikari anoita uye anoparadza.Izvi zvinodaro nekuti ine non-reactive properties.Chimwe chinoshanda chePTFE chinoshanda semafuta ekuzora.Inoshandiswa neiyi nzira, PTFE inobatsira kuderedza kupokana mukati memakina, kuderedza "kupfeka uye kubvaruka," uye kunatsiridza kushandiswa kwesimba.

PFA inowanzo shandiswa kumidziyo yepurasitiki yelabhu nekuda kwekunyanya kuramba kurwisa kemikari, kujeka kwemaziso, uye kushanduka kwese.PFA inowanzo shandiswawo sechubhu yekubata yakakosha kana corrosive process.Zvimwe zvikumbiro zvePFA zvakaita semashizha machira emidziyo yemakemikari.Nekuda kwehunhu hwayo, inogona kufambisa kushandiswa kwekabhoni simbi fiber reinforced mapurasitiki (FRPs) sekutsiva kune anodhura alloys nesimbi.

Midziyo inoshandiswa pakuyera chiyero inowanzo ratidzwa kune yakaoma tank atmosphere.Aggressive media, senge acid, inogona kukanganisa probes uye zvikamu zvinosangana nechigadzirwa.Viscous uye zvinonamira zvigadzirwa ndiwo mamwe mazinga ekuyera matambudziko.Izvi zvinogona kukonzera kuvaka-kumusoro pane dzakanyorova zvikamu zveiyo transmitter uye kuwedzera njodzi yekukanganisa kuyerwa.Zvikamu zvakanyorova zvakaputirwa muPTFE kana PFA zvinhu zvinopa kumira kwakanaka kune zvinosvibisa zvigadzirwa uye imhinduro inoshanda yekudzivirira kusvibiswa kunokonzerwa nekugadzirwa kwechigadzirwa.

Zvigadzirwa zvemvura zvinogona kukonzera condensation pane antenna, izvo zvinogona kukanganisa kuyerwa kwechiyero.Nekuda kweiyo hydrophobic zvivakwa zvePTFE nePFA, kuyerwa kucharamba kusingakanganiswe kana madonhwe emvura avaka-up pazvikamu zveantenna.

PTFE, iri fluorocarbon solid, ine hydrophobic, zvichireva kuti hainyanyi kunyorova nezvinhu zvine mvura.Zvakare, PTFE ine yakaderera kwazvo coefficient yekukwesha kana yasangana neyakaoma.

PFA yakakwirira kune PTFE maererano nekushanduka-shanduka kunyanya kana zvasvika kune tubing application.Kune rimwe divi, PFA's flex life (kureva, kugona kutsungirira kupeta uchipetwa) yakaderera pane PTFE.

PTFE inoshingirira zvishoma kupisa kupfuura PFA.PFA inonyanya kukanganiswa nekunyura kwemvura uye mamiriro ekunze asi yakakwirira kune PTFE kana zvasvika pakuramba munyu kupfapfaidza.

PFA ine dielectric inongogara yakafanana nePTFE pamwe chete neyakafanana dissipation factor;zvakadaro PFA ine dielectric simba katatu kusvika mana zvakapetwa kupfuura PTFE.