Ni ibihe bikoresho umuyoboro wa ptfe ukozwemo?
Intangiriro y'ibicuruzwa
1,Umuyoboro wa Ptfeni irindi zina rya polytetrafluoroethylene, incamake y'icyongereza ni PTFE, (izwi cyane nka "Plastic King, Hara"), naho formula y'ikinyabutabire ni -(CF2-CF2)n-. Polytetrafluoroethylene yavumbuwe ku bw'impanuka mu 1938 na shimi Dr. Roy J. Plunkett muri DuPont'Laboratwari ya Jackson i New Jersey, muri Amerika Ubwo yageragezaga gukora chlorofluorocarbon nshya Mu bijyanye na refrigerant ivanze. Ibikomoka kuri iki gikoresho muri rusange byitwa "coating idafatana"; ni ibikoresho bya polymeri by’ubukorikori bikoresha fluorine kugira ngo bisimbuze atome zose za hydrogen muri polyethylene. Iki gikoresho kirwanya aside, alkali, n'ibindi bintu bitandukanye bya organic, kandi kidashonga cyane mu bintu byose bya organic. Muri icyo gihe, PTFE ifite imiterere yo kudashyuha cyane, kandi coefficient yayo yo gukururana ni nto cyane, bityo ishobora gukoreshwa nk'uburyo bwo gusiga amavuta, kandi yabaye irangi ryiza ku gice cy'imbere cy'inkono zidafatana n'imiyoboro y'amazi.
Ibi bikoresho by'ibi bicuruzwa bikoreshwa cyane cyane ku bicuruzwa bikurikira:
PTFE, FEP, PFA, ETFE, AF, NXT, FFR.
PTFE: Igitambaro cya PTFE (polytetrafluoroethylene) kidafata gishobora gukoreshwa buri gihe kuri dogere 260°C, ifite ubushyuhe ntarengwa bwo gukoreshwa bwa 290-300°C, ubushobozi bwo gukururana buke cyane, ubushobozi bwo kwangirika neza no kudahinduka neza mu binyabutabire.
FEP: FEP (fluorinated ethylene propylene copolymer) idafata irashonga ikavamo igakora agahu kadafata imyenge mu gihe cyo guteka. Ifite ubushobozi bwo kudafata neza mu binyabutabire kandi ifite imiterere myiza yo kudafata. Ubushyuhe ntarengwa bwo kuyikoresha ni 200℃.
PFA: PFA (perfluoroalkyl compound) idafatana irashonga kandi igatemba mu gihe cyo guteka bigatuma ikora agahu katagira imyenge nka FEP. Akamaro ka PFA ni uko ifite ubushyuhe bwinshi bwo gukoresha buri gihe bwa dogere 260°C, gukomera no gukomera cyane, kandi ikwiriye cyane gukoreshwa mu kurwanya gufata no kurwanya imiti mu gihe cy'ubushyuhe bwinshi.
PTFE (Polytetrafluoroethene) ni polymer ikoze mu buryo bwa sintetike ikoresha fluorine kugira ngo isimbure atome zose za hydrogen muri polyethylene. Iki gikoresho kirwanya aside, alkali, n'ibindi bintu bitandukanye bya organic, kandi kidashonga neza mu bintu byose bya solvent. Muri icyo gihe, ptfe tube ifite imiterere yo kudashyuha cyane, kandi coefficient yayo yo gukururana ni nto cyane, bityo ishobora gukoreshwa mu gusiga amavuta, kandi yabaye irangi ryiza ku miyoboro yoroshye gusukura ya woks n'amazi. Ishobora gukoreshwa mu kurwanya ingese mu miyoboro, kurwanya ubushyuhe bwinshi n'ubuke, no kurwanya ingese. Ikoreshwa ahantu habi nko gusiga amavuta, injeniyeri, ibikoresho by'ikoranabuhanga, ibikoresho by'amashanyarazi, n'indege.
Ibiranga ibicuruzwa
1. Ubudahangarwa bw'ubushyuhe buri hejuru n'ubuke: ingaruka nke ku bushyuhe, ubushyuhe bunini, ubushyuhe bukwiye -65~260℃.
2、 Ntifata: Ibintu hafi ya byose ntibifatanye na firime ya PTFE. Filimi nto cyane nazo zigaragaza imikorere myiza yo kudahungabanya. 2. Kurwanya ubushyuhe: Filimi yo gutwikira ya PTFE ifite ubushobozi bwo kwihanganira ubushyuhe bwinshi kandi irwanya ubushyuhe buke. Ishobora kwihanganira ubushyuhe bwinshi kugeza kuri 300°C mu gihe gito, kandi muri rusange ishobora gukoreshwa buri gihe hagati ya 240°C na 260°C. Ifite ubushobozi bwo kwihanganira ubushyuhe bwinshi. Ishobora gukora mu bushyuhe bukonje idacika kandi ntishonga mu bushyuhe bwinshi.
3. Imiterere yo kuzunguruka: Filimi yo gusiga ya PTFE ifite igipimo cyo hejuru cyo kuzunguruka. Igipimo cyo kuzunguruka kirahinduka iyo umutwaro uri kuzunguruka, ariko agaciro kayo kari hagati ya 0.05-0.15 gusa.
4. Kurwanya ubushuhe: Ubuso bw'ifiriti ya PTFE ntibufata ku mazi no ku mavuta, kandi ntabwo byoroshye gufata ku gisubizo mu gihe cyo gukora. Niba hari umwanda muto, kuraho gusa. Igihe gito cyatakaye, bikagabanya amasaha y'akazi kandi bikanoza imikorere myiza y'akazi.
5. Irwanya kwangirika: Ifite ubushobozi bwo kwangirika neza iyo ifite umutwaro mwinshi. Iyo ifite umutwaro runaka, ifite ibyiza bibiri byo kudakwangirika no kudahungabanywa.
6. Ubudahangarwa ku ingese: PTFE ntabwo yangirika cyane n'imiti, kandi ishobora kwihanganira aside zose zikomeye (harimo na aqua regia) na oxydants zikomeye uretse ibyuma byashongeshejwe bya alkali, fluorine media na sodium hydroxide iri hejuru ya 300°C. Uruhare rw'ibigabanya ingese n'ibindi bintu bitandukanye bishobora kurinda ibice byangirika ku buryo ubwo aribwo bwose.
imiterere y'ibinyabutabire
1、Ubushyuhe: Ntabwo bwagizweho ingaruka n'ibidukikije n'inshuro, ubukana bw'ingano bushobora kugera kuri 1018 ohm·cm, igihombo cya dielectric ni gito, kandi voltage yo kwangirika ni nyinshi.
2. Ubudahangarwa bw'ubushyuhe buri hejuru n'ubuke: ingaruka nke ku bushyuhe, ubushyuhe bunini, ubushyuhe bukwiye -190~260℃.
3、Kwisiga: Ifite ubushobozi buke bwo gukururana hagati ya pulasitiki kandi ni ibikoresho byiza byo kwisiga bidafite amavuta.
4. Ubuso ntibufatana: ibikoresho bikomeye bizwi ntibishobora gufatana n'ubuso, ni ibikoresho bikomeye bifite ingufu nke cyane ku buso.
5. Ubudahangarwa bw'ikirere, ubw'imirasire n'ubushobozi buke bwo kwinjira: ubwiyongere bw'ikirere igihe kirekire, ubuso n'imikorere ntibihinduka.
6. Kudashya: Igipimo cy'umupaka wa ogisijeni kiri munsi ya 90.
7、PTFE ikoreshwa cyane mu nganda zisaba ubushyuhe bwinshi n'ubukonje bwinshi. Acide ikomeye cyane ya aside-fluoroantimonic ishobora no gukoreshwa mu kubungabunga
Agace gakoreshwamo ibicuruzwa
Polytetrafluoroethylene ishobora gukorwa hakoreshejwe gusunika cyangwa gusohora; ishobora kandi gukorwamo firime hanyuma igacibwamo kaseti ya PTFE ishyizwe mu mugozi iyo ikoreshejwe mu nsinga zishyuha cyane. Ikoreshwa mu gukora insinga zikoresha frequency nyinshi kandi igakorwa mu buryo butaziguye mu gukwirakwiza amazi. Ishobora gukoreshwa mu gusiga, gutera cyangwa gukora fibre.
Polytetrafluoroethylene ikoreshwa cyane mu nganda nka ingufu za kirimbuzi, ubwugarizi bw'igihugu, iby'ikirere, ibikoresho by'ikoranabuhanga, amashanyarazi, imiti, imashini, ibikoresho, ibipimo, ubwubatsi, imyenda, ubuvuzi bw'ibyuma, imiti, ubuvuzi, ibiribwa, ibyuma n'ubushongi bw'amabuye y'agaciro, n'ibindi. Ibikoresho byangiritse, ibikoresho bikingira ubushyuhe, irangi ririnda gukomereka, nibindi bituma iba ikintu kidasimburwa.
Umuyoboro wa PTFEIfite imiterere myiza cyane, irwanya ubushyuhe bwinshi, irwanya ingese, ntifata, yisiga amavuta, ifite imiterere myiza ya dielectric, kandi ifite coefficient ntoya cyane yo gushwanyagurika. Ikoreshwa nk'imashini zikora pulasitiki, ishobora gukorwamo imiyoboro ya PTFE, inkoni, imikandara, amasahani, filime, nibindi. Muri rusange ikoreshwa mu miyoboro irwanya ingese, ibikoresho, ipompo, valves, radar, ibikoresho byitumanaho bikoresha itumanaho rinini, ibikoresho bya radiyo, radomes, nibindi bifite imikorere myiza. Kongeramo icyuma cyose gishobora kwihanganira ubushyuhe bwa polytetrafluoroethylene, imiterere yacyo ya mekanike ishobora kunozwa cyane. Muri icyo gihe, hari izindi imiterere myiza ya PTFE. Ubwoko bwuzuye burimo fibre y'ikirahure, icyuma, okiside y'icyuma, grafiti, molybdenum disulfide, fibre ya karubone, polyimide, EKONOL, nibindi. Agaciro ka PV gashobora kwiyongeraho inshuro 1000.
Ubushakashatsi bujyanye n'umuyoboro wa ptfe:
Igihe cyo kohereza: Mutarama-07-2021