Menene PFA?
Turanci sunanPFAshi ne: Polyfluoroalkoxy, sunan Sinanci shine: tetrafluoroethylene - perfluorinated alkoxy vinyl ether copolymer (wanda kuma aka sani da: perfluorinated alkylates, soluble polytetrafluoroethylene)PFAguduro ne in mun gwada da sabon narkewa-aiki fluoroplastics, PFA, FEP, PTFE sinadaran Properties suna kama, amma FEP za a iya kawai amfani da kasa da 200 digiri, PTFE ba za a iya allura.
1. Musamman nauyi: 2.13-2.167g/cm3
2. Ƙimar ƙera: 3.1-7.7%
3, Molding zafin jiki: 350-400 ℃
4, The narkewa batu na PFA ne game da 580F da yawa ne 2.13-2.16g/cc (g/cm3).
Halaye da manyan amfanin PFA
PFA an fi sani da PTFE fusible, kuma kaddarorin sa daban-daban sune saman fluoroplastics, kuma amfanin sa yayi kama da FEP.Ana amfani da shi sosai a masana'antar semiconductor, kazalika da likitanci, sinadarai da anti-lalata, motoci da sauran fannoni.
Ana samun PFA a cikin nau'in pellet don gyare-gyare da extrusion, foda foda don gyare-gyaren juyawa da sutura, kuma a cikin samfuran da aka kammala kamar fina-finai, zanen gado, sanduna da tubing.Resins na PFA da aka rarraba a kasuwannin Amurka sune alamar Teflon daga DUPOut, alamar Neollon daga Daikin, alamar Hthen daga Ansimont, da alamar Hostafl daga HOechst Celanese.
1. Babban amfani daPFA.
①.Ya dace da samar da sassan da ba su da lahani, sassa masu jurewa, hatimi, sassa masu rufewa da sassan kayan aikin likita.
②.High zafin waya waya da kebul rufi, anti-lalata kayan aiki, sealing kayan, famfo da bawul bushings, da sinadaran kwantena.
2. Samar da aiki
①.Kayan lu'ulu'u, ƙananan shayar da danshi.Ana iya sarrafa su zuwa samfuran ta hanyoyin sarrafa thermoplastic na yau da kullun.
②.Rashin motsi mara kyau, mai sauƙin lalacewa, bazuwar yana haifar da iskar gas.Tsarin zafin jiki bai kamata ya wuce digiri 475 ba, ƙirar ya kamata a mai tsanani zuwa digiri 150-200, kuma tsarin zubar da ruwa ya kamata ya kasance da ƙananan juriya ga kayan aiki.
③.Granules translucent, allura da gyare-gyaren extrusion.Tsarin zafin jiki 350-400 digiri, sama da digiri 475 yana da sauƙi don haifar da canza launi ko kumfa.Kuma lura cewa zai fi wuya a rushe.
④.Saboda kayan da aka narkar da shi yana da tasiri mai lalacewa akan ƙarfe, samar da dogon lokaci, ƙirar tana buƙatar maganin plating na chromium.
Ayyukan kayan aiki
1. PFA shine copolymer na ƙaramin adadin perfluoropropyl perfluorovinyl ether da polytetrafluoroethylene.Ana haɓaka haɗin narkewa, an rage danko na maganin, yayin da aikin ba ya canzawa idan aka kwatanta da PTFE.Ana iya sarrafa wannan guduro kai tsaye zuwa samfuran ta hanyar gyare-gyaren thermoplastic na yau da kullun.
2, yawan zafin jiki na amfani da dogon lokaci - 80 - 260 digiri, yana da kyakkyawan juriya na sinadarai, juriya ga duk sinadarai, mafi ƙarancin ƙima na gogayya a cikin filastik, akwai kyawawan kaddarorin lantarki, ƙarancin wutar lantarki ba ya shafar yanayin zafi, "sarkin filastik" da ake kira.
3, juriya na sinadarai da PTFE kama, mafi kyau fiye da vinylidene fluoride.
4, juriya mai rarrafe da ƙarfin matsawa sun fi PTFE, ƙarfin ƙarfi mai ƙarfi, elongation har zuwa 100-300%.Good dielectric Properties, m radiation juriya.
5, Non-mai guba: physiologically inert, za a iya dasa a cikin jikin mutum.
Lokacin aikawa: Nuwamba 18-2022