PTFE, Nooriously hu ua Teflon, tsis yog ib qho kev npaj nrhiav pom. Hauv 1938, DuPont dawm raws li cov khoom no zoo kawg nkaus los ntawm kev tsis zoo, sparking ib tug transformation nyob rau hauv cov ntaub ntawv science thiab coj mus muag daim ntaub ntawv.
Ib tag kis sawv ntxov hauv 1938, Roy Plunkett, ib tug hluas khw muag tshuaj, tau nquag ua si nrog nws cov kev sim hauv ib ces kaum ntawm DuPont. Nws txoj hauj lwm tshwm sim yooj yim: nrhiav ib lub tshuab ua kom txias tshiab.
(Roy thiab nws cov npoj yaig)
Txawm li cas los xij, tsuas yog thaum Roy ntseeg tias nws tsuas yog txoj haujlwm niaj hnub xwb, cov ntsiab lus tau tig. Nws khaws cov roj tetrafluoroethylene rau hauv lub tog raj kheej thiab thov rau nws tus kheej: “Okay, ntsib koj tag kis.” Hnub tom qab, thaum nws rov qab los ua nws qhov kev sim, nws pom tias cov pa roj tau ploj mus tsis zoo, tawm ntawm cov hmoov dawb xwb. Zoo, qhov no yog qhov txawv ntawm cov ntawv nws tau npaj. Duab nws qhia thaum ntawd: ib nrab ntxhov siab, ib nrab xav. Thaum kuaj ntxiv, nws tau nthuav tawm tias cov hmoov dawb txawv txawv no muaj qee qhov kev sib tw superpowers: nws tau ua phem rau yuav luag txhua yam tshuaj, tuaj yeem nyob twj ywm amazing ntawm qhov kub thiab txias, thiab tsis muaj kev nyab xeeb li roj. Tam sim ntawd, Luo tau lees paub tias thaum nws tseem tsis tau nrhiav lub tshuab ua kom txias tshiab, nws tau ua yuam kev nrhiav pom qhov zais cia ntawm thaj chaw ua noj superhero ntawm lub neej yav tom ntej – non-stick frying lauj kaub. Txij thaum ntawd los, kib qe tsis yog ib qho kev sib tw lawm, thiab ntxuav lub lauj kaub los ua cua.
Txawm hais tias qhov kev tshawb pom ntawm PTFE tsis txhob txwm ua, nws muaj qhov tseem ceeb tshiab rau kev lag luam plastics thiab ntau qhov chaw, xws li aerospace, tsheb, khoom siv hluav taws xob, thiab cov khoom siv. PTFE yog feem ntau siv los ntawm vim nws cov khoom siv tshuaj thiab lub cev ib yam – tsis tshua muaj kev sib txhuam coefficient, kub-kub kuj, kev ruaj ntseg tshuaj, thiab tsis nplaum. Los ntawm cov khoom siv hauv chav ua noj mus rau qhov tseem ceeb ntawm qhov chaw shuttle, PTFE ua tau ntau daim ntawv thov ingenious ua tau. Txawm li cas los xij, thaum PTFE (Teflon ®) cim kev txhim kho tshiab hauv cov ntaub ntawv tshawb fawb, nws tsuas yog pib ntawm txoj kev ntev thiab nyuaj rau kev lag luam thiab kev siv dav dav. Thawj qhov teeb meem tsis yog tsuas yog nrhiav tau cov khoom tshiab tab sis ntxiv kom paub tias yuav ua li cas kom tau txais kev tsim khoom loj thiab yuav siv li cas hauv ntau qhov chaw..
Cov txheej txheem ntawm monomer synthesis thiab tswj polymerization ntawm PTFE tsis tau tsim tag nrho, ua rau nws nyuaj los tsim PTFE hauv ntau qhov ntau los yog siv tau zoo. Txawm hais tias cov khoom siv tshwj xeeb cov tsev tau muaj txiaj ntsig hauv kev siv kawg, lawv ib yam nkaus postured ntau obstacles thaum lub sij hawm ntau lawm txheej txheem. Tsis zoo li lwm yam khoom siv yas, PTFE tsis soluble hauv cov kuab tshuaj, kua qaub, los yog hauv paus thiab tsis sib koom ua ke cov kua dej ntws. Es, thaum cua sov, nws ua ib qho nyuaj, ntshiab gel uas tsis yaj thiab txav zoo li cov yas.
(Roy's Notes: Discovery ntawm PTFE)
Kom kov yeej cov teeb meem no, cov kws tshawb fawb thiab cov kws tsim qauv muaj lub sijhawm nyuaj los nrhiav cov txheej txheem los ntawm ntau qhov chaw, xws li hloov cov tswv yim los ntawm steel thiab ceramic tuav. Txhawm rau tsim PTFE, txheej txheem hu ua paste extrusion tau siv, uas tau txais los ntawm ceramic tuav. Txawm hais tias cov txheej txheem molding thiab tsim cov txheej txheem muaj qee qhov nyuaj ua kom zoo dua PTFE, nws yog ua tau los tsim PTFE Cheebtsam. Los ntawm 1947, Kev tshawb nrhiav kev tshawb fawb thiab kev sim ua tiav tau zoo, thiab ib qho chaw tsim khoom me me tau tsim hauv Arlington, New Jersey. Qhov no tau sau tseg txog qhov pib ntawm Teflon ® txoj kev mus los ntawm kev tshawb fawb kuaj mus rau kev ua lag luam. Hauv 1950, DuPont qhib ib tsob ntoo tshiab hauv Parkersburg, West Virginia, Kev nthuav dav kev lag luam ntau lawm ntawm Teflon ®. Xyoo ntawd tib lub xyoo, thev naus laus zis hla Atlantic thaum Imperial Chemical Industries tsim thawj PTFE cog sab nraum Tebchaws Meskas hauv UK.
Tus neeg muag khoom ntawm PTFE hmoov
TRUNNANO yog tus muab khoom ntawm 3D Printing Materials nrog dhau 12 xyoo dhau los hauv nano-building zog txuag thiab nanotechnology kev loj hlob. Nws lees txais kev them nyiaj ntawm Credit Card, T/T, West Union thiab Paypal. Trunnano yuav xa cov khoom rau cov neeg siv khoom txawv teb chaws los ntawm FedEx, DHL, los ntawm huab cua, los yog hiav txwv. Yog xav paub ntxiv txog ptfe hmoov lwm tus neeg, thov koj xav tiv tauj peb thiab xa cov lus nug.
Hu rau peb