Polytetrafluoroethylene (PTFE) chinhu chekugadzira chakagadzirwa netsaona mukupera kwema1930 apo kemisitiri aiedza kugadzira mhando nyowani yefiriji yeperfluorethylene.
Polytetrafluoroethylene (PTFE) chinhu chakagadzirwa netsaona mukupera kwema1930 apo kemisitiri aiedza kugadzira mhando nyowani yeperfluorethylene-based refrigerant.Panzvimbo pekuwana chlorofluorocarbon, musayendisiti akashamisika kuona kuti perfluorethylene yakashandiswa mukuita iyi yakabata nesimbi yemukati mumudziyo wayo uye yakaumbwa pasi pekumanikidzwa.Pasati papera makore gumi gare gare, chinhu chitsva ichi chaive chichigoverwa pachiyero chekutengesa uye chakazopedzisira chave nekodzero pasi pezita rekuti polymer®.Zvingave mamwe makore makumi maviri izvi zvisati zvarova pani yekubikira uye inozivikanwa seyekutanga isina-tsvimbo yekuputira yekubika, zvakadaro.Muchokwadi, chinhu ichi chakashandiswa kune zvakasiyana-siyana zvimwe zvinangwa pakutanga.
Munguva yeHondo Yenyika II, PTFE yakashandiswa kudzivirira kupukunyuka kwezvinhu zvine radioactive kubva panzvimbo yakarongerwa kugadzira bhomba reatomu rekutanga muUS, chinangwa chinodaidzwa kuti Manhattan Project.Nzvimbo iyi yaimiririra chimedu chinokatyamadza chezvivakwa chine 2,000,000 square feet (609,600 sq. metres) umo munogona kuisa uranium hexafluoride.Haisi chete chinhu ichi chine muchetura uye chinoparadza pachacho, asi zvakare chinoumba gasi rine njodzi rinozivikanwa sehydrogen fluoride pamberi pemvura kana mhute yemvura.Nechikonzero ichi, PTFE yakashandiswa seyekuputira pombi yepipefittings kuti iite inovuza humbowo.
Iyo yakasarudzika insulating zvimiro zvechinyorwa ichi chakaita kuti kushandiswa kwayo muzvikamu zvemagetsi kuve kwakanaka.Chimwe chinhu, haisi-conductive, ichiita kuti irege kupikisa minda yemagetsi yakakwirira.Iyo zvakare inoshingirira zvakanyanya kumvura, kupisa, uye makemikari ekuora.Muchokwadi, inoramba ichishandiswa kugadzira michina yemurabhoritari uye zvishongedzo zvinosangana nehydrofluoric acid, iyo yaizonyungudutsa zvimwe zvinhu, kunyangwe girazi.
PTFE zvakare ine yakaderera zvakanyanya frictional properties, iyo inoratidzwa sefrictional coefficient.Chiyero ichi chine hukama uye chinosiyana zvichienderana nemidziyo yakaunzwa kuti ibudise kana kutevedzera kupokana.Panyaya yemapurasitiki, kukwesha kunowanzo onekwa pakatarisana nesimbi yakakwenenzverwa.Kuisa iyo yakaderera friction coefficient yePTFE pakuona kwayo, ndiyo chete inozivikanwa yekugadzira pamusoro pezvinhu izvo zvigunwe zvechigunwe zvinotadza kunamira.Hunhu uhwu hunoita kuti ive yakakodzera kugadzira zvikamu zvinoda kuramba kukweshana, senge magiya nemabhora ebhora.
Nyaya iyi yakazounzwa kudzimba dzeAmerica naMarion Trozzolo, muvambi weLabhoritari Plasticware Fabricators.Nepo Trozzolo anga achigadzira maturusi esainzi akavharwa nepolymer® kwemakore akati wandei, akafemerwa neanjiniya wechiFrench akaona iri chipfeko chinoshanda chisina tsvimbo chegiya rake rekuredza zvekuti akazobata mapoto nemapani emukadzi wake nazvo.Kunyange zvazvo kuedza uku kwakatungamirira mukugadzirwa kwezvibikirwo zvinozivikanwa seTefal (T-Fal®) muFrance pakati pemakore ekuma1950, Trozzolo yakava yekutanga kuUnited States mugadziri wepolymer®-coated cookware.Muchokwadi, "The Happy Pan," yakatangwa muna 1961, yakawana nzvimbo yakakosha munhoroondo muSmithsonian Institute uye Trozzolo zita rekusiyanisa muPlastiki Hall of Fame.
Nguva yekutumira: Sep-01-2020