PTFE, amadziwika kuti Teflon, sikunali kutulukira kokonzekera. Mu 1938, DuPont idapunthwa ndi chinthu chodabwitsachi m'malo mwangozi, kuyambitsa kusintha kwa sayansi yazinthu ndi ntchito zamalonda.
Mmawa wina mkati 1938, Roy Plunkett, sitolo yaing'ono ya mankhwala, anali kusewera ndi zoyeserera zake pakona ya DuPont. Ntchito yake idawoneka yofunikira: pezani chozizira chatsopano chatsopano.
(Roy ndi anzake)
Komabe, pomwe Roy adakhulupirira kuti inali ntchito wamba, mfundo zinasinthana. Anasunga mpweya wa tetrafluoroethylene mu silinda ndikudzinenera yekha: “Chabwino, tiwonana mawa.” Tsiku lotsatira, pamene anabwerera kukapitiriza kuyesa kwake, adapeza kuti gasiyo adasowa modabwitsa, kusiya mulu wokha wa ufa woyera. Chabwino, izi zinalidi zosiyana ndi zolemba zomwe adakonza. Taganizirani mmene ankaonekera panthawiyo: theka kuthedwa nzeru, theka chidwi. Popitiriza kufufuza, anavumbula kuti ufa woyera wachilendo umenewu unali ndi mphamvu zamphamvu zamakono: inali yodana ndi pafupifupi mankhwala onse, akhoza kukhalabe odabwitsa pa kutentha kwambiri, ndipo anali osatetezeka ngati mafuta. Nthawi yomweyo, A Luo anazindikira kuti anali asanapezeko firiji yatsopano, anali atatulukira mwangozi chinsinsi cha malo ophikira ngwazi zamtsogolo – zophika zopanda ndodo. Kuyambira pamenepo, Kukazinga mazira sikunalinso kovuta, ndipo kuyeretsa miphika kunakhala kamphepo.
Ngakhale kupezeka kwa PTFE sikunali mwadala, chinali ndi kufunikira kwakukulu kwatsopano kwa mafakitale apulasitiki ndi madera ena ambiri, monga zamlengalenga, magalimoto, zipangizo zamagetsi, ndi zida. PTFE imagwiritsidwa ntchito kwambiri chifukwa chamankhwala ake amtundu umodzi komanso thupi – otsika kwambiri kukangana coefficient, kukana kutentha kwambiri, chitetezo chamankhwala, ndi kusamamatira. Kuchokera ku ziwiya zakukhitchini kupita kumadera ofunikira a shuttle yamlengalenga, PTFE idapangitsa kuti ntchito zambiri zanzeru zitheke. Komabe, PTFE (Teflon®) zidawonetsa chitukuko chatsopano mu sayansi yazinthu, chinali chiyambi chabe cha njira yayitali komanso yovuta yopita kumalonda ndikugwiritsa ntchito kwambiri. Chopinga choyambirira sichinali kungopeza chinthu chatsopano komanso kudziwa momwe mungapezere zopanga zazikulu komanso momwe mungagwiritsire ntchito pazinthu zosiyanasiyana..
The njira za kaphatikizidwe monoma ndi malamulo polymerization wa PTFE sanali kwathunthu anayamba, kupangitsa kuti zikhale zovuta kupanga PTFE yochulukirapo kapena njira yabwino. Ngakhale nyumba zapadera za zinthuzo zinali zothandiza pomaliza ntchito, nawonso adayika zopinga zambiri panthawi yopanga. Mosiyana ndi mapulasitiki ena wamba, PTFE sisungunuka mu zosungunulira, zidulo, kapena maziko ndipo samaphatikizira madzi oyenda. M'malo mwake, ukatenthedwa, zimakhala zovuta, gel osakaniza omwe sasungunuka ndikuyenda ngati mapulasitiki.
(Zolemba za Roy: Kupezeka kwa PTFE)
Kuthana ndi zovuta izi, ofufuza ndi okonza anali ndi nthawi yovuta kupeza njira kuchokera kumadera ena osiyanasiyana, monga kusintha njira zogwirira ntchito zachitsulo ndi ceramic. Kupanga PTFE, njira yotchedwa phala extrusion inagwiritsidwa ntchito, yomwe idabwerekedwa kuchokera kumanja a ceramic. Ngakhale ochiritsira akamaumba ndi chitukuko njira anali ndi vuto kuyenga PTFE, zinali zotheka kupanga zigawo za PTFE. Wolemba 1947, kafukufuku wathunthu ndi kuyesa zidayenda bwino, ndi malo ang'onoang'ono opanga zinthu adapangidwa ku Arlington, New Jersey. Izi zidawonetsa chiyambi cha ulendo wa Teflon ® kuchokera ku labotale yofufuza kupita kumsika. Mu 1950, DuPont idatsegula chomera chatsopano ku Parkersburg, West Virginia, kukulitsa kwambiri kupanga mafakitale a Teflon®. Chaka chomwecho, ukadaulo unawoloka nyanja ya Atlantic pomwe Imperial Chemical Industries idapanga mbewu yoyamba ya PTFE kunja kwa United States ku UK..
Wogulitsa PTFE Powder
TRUNNANO ndi ogulitsa 3D Printing Materials ndi over 12 zaka zambiri pakusunga mphamvu za nano-building and nanotechnology development. Imavomereza kulipira kudzera pa Kirediti kadi, T/T, West Union ndi Paypal. Trunnano idzatumiza katundu kwa makasitomala kunja kwa FedEx, DHL, ndi mpweya, kapena panyanja. Ngati mukufuna kudziwa zambiri za ptfe ogulitsa ufa, chonde omasuka kulankhula nafe ndi kutumiza kufunsa.
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