PFA ni iki?
Izina ry'icyongereza ryaPFAni: Polyfluoroalkoxy, izina ryigishinwa ni: tetrafluoroethylene - alukoksi ya alkoxy vinyl ether copolymer (izwi kandi nka: alkylates itunganijwe neza, polytetrafluoroethylene)PFAresin ni shyashya ya fluoroplastique yashonga, PFA, FEP, imiti ya PTFE irasa, ariko FEP irashobora gukoreshwa munsi ya dogere 200 gusa, PTFE ntishobora guterwa.
1 av Uburemere bwihariye: 2.13-2.167g / cm3
2 shr Kugabanuka kugabanuka: 3.1-7.7%
3 temperature Ubushyuhe bukabije: 350-400 ℃
4 point Ingingo yo gushonga ya PFA igera kuri 580F naho ubucucike ni 2.13- 2.16g / cc (g / cm3).
Ibiranga nuburyo bukoreshwa bwa PFA
PFA isanzwe izwi nka fusible PTFE, kandi imiterere yayo itandukanye niyo hejuru ya fluoroplastique, kandi imikoreshereze yayo isa na FEP.Ikoreshwa cyane mu nganda ziciriritse, kimwe n'ubuvuzi, imiti na anti-ruswa, amamodoka n'izindi nzego.
PFA iraboneka muburyo bwa pellet yo kubumba no gusohora, ifu yifu yo guhinduranya no gutwikira, no mubicuruzwa bitarangiye nka firime, amabati, inkoni hamwe na tubing.Ibisigarira bya PFA byatanzwe ku isoko ry’Amerika ni ikirango cya Teflon cyo muri DUPOut, ikirango cya Neoflon cyo muri Daikin, ikirango cya Hthen cyo muri Ansimont, na Hostafl cyo muri HOechst Celanese.
1 uses Ibyingenzi bikoreshwa byaPFA.
①.Birakwiriye kubyara ibice birwanya ruswa, ibice birwanya kwambara, kashe, ibice byokwirinda hamwe nibikoresho byubuvuzi.
②.Ubushyuhe bwo hejuru cyane hamwe ninsinga, ibikoresho birwanya ruswa, ibikoresho bifunga kashe, pompe na valve bushing, hamwe nibikoresho bya shimi.
2 、 Gushiraho imikorere
①.Ibikoresho bya Crystalline, kwinjiza amazi make.Irashobora gutunganyirizwa mubicuruzwa nuburyo busanzwe bwo gutunganya thermoplastique.
②.Kugenda nabi, byoroshye kubora, kubora bitanga gaze yangirika.Ubushyuhe bwo kubumba ntibugomba kurenga dogere 475, ifumbire igomba gushyuha kugeza kuri dogere 150-200, kandi sisitemu yo gusuka igomba kuba ifite imbaraga nke zo kurwanya ibintu.
③.Granules isobanutse, inshinge no gushushanya.Ubushyuhe bwa dogere 350-400, hejuru ya dogere 475 biroroshye gutera ibara cyangwa ibibyimba.Kandi menya ko bizagorana gusenya.
④.Kuberako ibikoresho bishongeshejwe bigira ingaruka mbi kubyuma, umusaruro muremure, ifumbire ikenera kuvura chromium.
Imikorere y'ibikoresho
1 、 PFA ni kopolymer yumubare muto wa parfluoropropyl perfluorovinyl ether na polytetrafluoroethylene.Guhuza gushonga byongerewe imbaraga, ubwiza bwigisubizo buragabanuka, mugihe imikorere idahindutse ugereranije na PTFE.Iyi resin irashobora gutunganyirizwa mubicuruzwa muburyo busanzwe bwa termoplastique.
2, gukoresha igihe kirekire ubushyuhe - dogere 80 - 260, ifite imiti irwanya imiti, irwanya ruswa kumiti yose, coefficient yo hasi cyane yo guterana muri plastiki, hari ibintu byiza byamashanyarazi, amashanyarazi yayo ntabwo yatewe nubushyuhe, "umwami wa plastiki" witwa.
3, imiti irwanya imiti na PTFE bisa, biruta fluoride ya vinylidene.
4, imbaraga zayo zo kurwanya no kwikuramo imbaraga ziruta PTFE, imbaraga zingana cyane, kurambura kugeza 100-300%.Ibintu byiza bya dielectric, birwanya imirasire nziza.
5 、 Ntabwo ari uburozi: inert physiologique, irashobora guterwa mumubiri wumuntu.
Igihe cyo kohereza: Ugushyingo-18-2022