(Pfupiso tsananguro)PTFE EPDM butterfly valve seat
Teflon PTFE inozivikanwawo sepolytetrafluoroethylene.Teflon PFA inonziwo soluble polytetrafluoroethylene.Kutenga kwevharuvhu kwakawanda hakuna kunyatsojeka kuti ndezvipi zviri nani kusarora kwemavharuvhu anoshandisa PTFE nePFA? Ndezvipi zvakanakira uye zvakaipira chimwe nechimwe? Kusiyana kwekudzivirira kwekushisa, izvo zvakachipa?
Yakasiyana muzvarirwo
1.PFA: a copolymer yehuwandu hushoma hweperfluoropropyl perfluorovinyl ether uye polytetrafluoroethylene.2.PTFE: chikwata chepolymer chinoumbwa ne polymerization ye tetrafluoroethylene.
Hunhu hwakasiyana
PFA maitiro
(1) Crystal zvinhu, yakaderera mwando absorption.Inogona kugadzirwa kuita zvigadzirwa ne thermoplastic processing nzira.
. Iyo tembiricha yekuumbwa haina kupfuura475 c, iyo mold inopisa kusvika 150 - 200 ° C, uye hurongwa hwekudururwa hutsinye kupokana nekuyerera kwemidziyo.
(3 Trasucent pelles, ijection molding and extrusion molding. Molding tembiricha is 350-400C, 475℃ and above are easy to causeis coloration or blistering. Chenjerera kuoma kwekudzikisa.
(4) Nekuda kwekuora kwezvinhu zvakanyungudutswa pasimbi, kugadzirwa kwenguva refu kunoda chrome plating pane mold.PTFE maitiro
PTFE Hunhu
(1) High tembiricha kuramba: refu-tembiricha kushandiswa tembiricha 200 ~ 260 ℃;
(2)Kudzikira tembiricha kuramba: yakapfava pa -100℃;
(3) Corrosion resistance: inoshingirira kune aqua regia uye zvese organic solvents;
(4) Kuramba kwemamiriro ekunze: hupenyu hwekuchembera hwakanakisa hwemapurasitiki;
(5)Kuzora kwepamusoro: ine diki diki coefficient yefriction (0.04) pakati pemapurasitiki;
(6) Isina - inonamira: Iine diki diki tension pakati pezvinhu zvakasimba isina kunamatira kune chero chinhu. Pfupiso
Musiyano mukuru ndewekuti PFA iri nyore kugadzirisa uye inodhura kupfuura PTFE, asi mukuita PTFE ine zvirinani corrosion resistara uye zvakare inoshingirira kune yakanyanya tembiricha.
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