Yini i-PFA?
Igama lesiNgisi elithiPFAyi: Polyfluoroalkoxy, igama lesiShayina ngu: tetrafluoroethylene - perfluorinated alkoxy vinyl ether copolymer (eyaziwa nangokuthi: alkylates perfluorinated, soluble polytetrafluoroethylene)PFAi-resin isanda kuncibilika i-fluoroplastics entsha, i-PFA, i-FEP, izakhiwo zamakhemikhali ze-PTFE ziyafana, kodwa i-FEP ingasetshenziswa kuphela ngaphansi kwama-degree angu-200, i-PTFE ayikwazi ukujovwa.
1, amandla adonsela phansi akhethekile: 2.13-2.167g/cm3
2, Ukuncipha kokubumba: 3.1-7.7%
3, izinga lokushisa lokubumba: 350-400 ℃
4, Iphuzu lokuncibilika le-PFA licishe libe ngu-580F kanti ukuminyana kungu-2.13- 2.16g/cc (g/cm3).
Izici nokusetshenziswa okuyinhloko kwe-PFA
I-PFA ijwayele ukwaziwa ngokuthi i-fusible PTFE, futhi izakhiwo zayo ezihlukahlukene zingaphezulu kwe-fluoroplastics, futhi ukusetshenziswa kwayo kufana ne-FEP.Isetshenziswa kabanzi embonini ye-semiconductor, kanye nezokwelapha, amakhemikhali kanye ne-anti-corrosion, izimoto kanye neminye imikhakha.
I-PFA itholakala ngefomu le-pellet lokubumba kanye ne-extrusion, ifomu lempushana lokubunjwa okujikelezayo nokunamathisela, futhi emikhiqizweni eseqediwe njengamafilimu, amashidi, izinduku kanye namashubhu.Amareyini e-PFA asatshalaliswa emakethe yase-US uhlobo lwe-Teflon oluvela e-DUPOut, uhlobo lwe-Neoflon oluvela kwa-Daikin, uhlobo lwe-Hthen lwase-Ansimont, kanye nohlobo lwe-Hostafl oluvela kwa-HOechst Celanese.
1, Ukusetshenziswa okuyinhloko kwePFA.
①.Ifanele ukukhiqizwa kwezingxenye ezimelana nokugqwala, izingxenye ezingagugi, ama-seal, izingxenye zokuvikela kanye nezingxenye zemishini yezokwelapha.
②.Izintambo ezisezingeni lokushisa eliphezulu nokufakwa kwekhebula, okokusebenza okunqanda ukugqwala, izinto zokuvala, amabhushi amaphampu namavalvu, neziqukathi zamakhemikhali.
2. Ukwenza umsebenzi
①.I-Crystalline material, ukumuncwa komswakama omncane.Ingacutshungulwa ibe yimikhiqizo ngezindlela ezijwayelekile zokucubungula i-thermoplastic.
②.Ukungahambi kahle, ukubola kulula kakhulu, ukubola kukhiqiza igesi egqwalayo.Ukushisa kokubumba akufanele kudlule ama-degree angu-475, isikhunta kufanele sishiswe ku-150-200 degrees, futhi uhlelo lokuthulula kufanele lube nokumelana okuphansi kokugeleza kwezinto ezibonakalayo.
③.Ama-granules akhanyayo, umjovo kanye nokubunjwa kwe-extrusion.Ukushisa kokubumba 350-400 degrees, ngaphezu kwama-475 degrees kulula ukubangela ukushintsha kombala noma amabhamuza.Futhi qaphela ukuthi kuzoba nzima kakhulu ukudiliza.
④.Ngenxa yokuthi izinto ezincibilikisiwe zinomthelela olonakalisayo ensimbi, ukukhiqizwa kwesikhathi eside, isikhunta sidinga ukwelashwa kwe-chromium plating.
Ukusebenza okubalulekile
1. I-PFA iyi-copolymer yenani elincane le-perfluoropropyl perfluorovinyl ether kanye ne-polytetrafluoroethylene.I-Melt bonding iyathuthukiswa, i-viscosity yesisombululo iyancishiswa, kuyilapho ukusebenza kungashintshile uma kuqhathaniswa ne-PTFE.Le resin ingacutshungulwa ngokuqondile ibe yimikhiqizo ngendlela ejwayelekile yokubumba ye-thermoplastic.
I-2, izinga lokushisa lokusetshenziswa kwesikhathi eside - 80 - 260 degrees, linokumelana okuhle kakhulu kwamakhemikhali, ukumelana nokugqwala kuwo wonke amakhemikhali, i-coefficient ephansi kakhulu yokungqubuzana epulasitiki, kunezici ezinhle kakhulu zikagesi, ukufakwa kwawo kagesi akuthintwa izinga lokushisa, "inkosi yepulasitiki" yabiza.
3, ukumelana kwayo namakhemikhali kanye ne-PTFE efanayo, ingcono kune-vinylidene fluoride.
4, ukumelana kwayo nokugqwala kanye namandla okucindezela kungcono kune-PTFE, amandla aqinile aphezulu, ubude obufika ku-100-300%.Izakhiwo ezinhle ze-dielectric, ukumelana okuhle kakhulu kwemisebe.
I-5, Non-toxic: inert physiologically, ingafakwa emzimbeni womuntu.
Isikhathi sokuthumela: Nov-18-2022