PTFE e bitsoa "morena oa polasetiki".Roy Planck, ntate oa fluororesin, o ile a qala ho ithuta li-substitutes tsa Freon ho DuPont United States ka 1936. Ba ile ba bokella karolo ea tetrafluoroethylene 'me ba e boloka ka libotlolong tsa tšepe, ba lokisetsa teko e latelang letsatsing le hlahlamang, Empa ha khatello e fokotsa valve. ea cylinder e ile ea buloa letsatsing le hlahlamang, ho ne ho se na khase e khaphatsehang.Ba ne ba nahana hore oa lutla, empa ha ba bekha moqomo oo, ba ile ba fumana hore moqomo oo o ne o sa theola boima ba 'mele.Ba ile ba bula botlolo ea tšepe 'me ba fumana phofo e ngata e tšoeu, e leng polytetrafluoroethylene (teflon).
PTFE e bitsoa "morena oa polasetiki".Roy Planck, ntate oa fluororesin, o ile a qala ho ithuta li-substitutes tsa Freon ho DuPont United States ka 1936. Ba ile ba bokella karolo ea tetrafluoroethylene 'me ba e boloka ka libotlolong tsa tšepe, ba lokisetsa teko e latelang letsatsing le hlahlamang, Empa ha khatello e fokotsa valve. ea cylinder e ile ea buloa letsatsing le hlahlamang, ho ne ho se na khase e khaphatsehang.Ba ne ba nahana hore oa lutla, empa ha ba bekha moqomo oo, ba ile ba fumana hore moqomo oo o ne o sa theola boima ba 'mele.Ba ile ba bula botlolo ea tšepe 'me ba fumana phofo e ngata e tšoeu, e leng polytetrafluoroethylene (teflon).
Litšobotsi le thepa:
Thepa ea mochini ea PTFE e batla e le bonolo.PTFE e na le letoto la lisebelisoa tse ntle tsa ts'ebetso:
- Ho hanyetsa mocheso o phahameng:mocheso oa tšebeliso ea nako e telele oa likhato tse 200 ~ 260;
- Ho hanyetsa mocheso o tlase:e ntse e le bonolo ho likhato tse -100;
- Corrosion resistance:ho hanyetsa aqua regia le lihlahisoa tsohle tsa manyolo;
- Boemo ba leholimo:bophelo bo botle ba botsofali ka polasetiki;
- Lubrication e phahameng:bonyane coefficient ea khohlano (0.04) ka polasetiki;
- Non-viscous:tsitsipano e fokolang ea holim'a thepa e tiileng ntle le ho khomarela ntho leha e le efe;
- Ha e na chefo:e nang le inertia ea 'mele le thepa e ntle ea motlakase, ke sesebelisoa se loketseng sa ho kenya C-Class, koranta e teteaneng e ka thibela matla a phahameng a 1500V.E boreleli ho feta leqhoa.
The friction coefficient of PTFE e nyane haholo, ke 1/5 feela ea polyethylene, e leng tšobotsi ea bohlokoa ea holim'a perfluorocarbon.'Me hobane matla a limolek'hule a ketane ea fluorine-carbon a tlase haholo, PTFE ha e na viscous.PTFE e boloka thepa e babatsehang ea mochine mocheso o pharaletseng oa -196 ho ea ho 260 ° C. E 'ngoe ea litšobotsi tsa li-polymers tsa perfluorocarbon ke hore ha li brittle mocheso o tlase.PTFE e na le sekhahla se phahameng sa 2.14-2.20g / cm3, e batlang e se na metsi, 'me sekhahla sa ho monya metsi se lekanang se ka tlase ho 0.01%.PTFE ke polima e tloaelehileng e bonolo le e fokolang.Matla a khoheli a kopanetsoeng pakeng tsa limolek'hule tsa macromolecules a manyenyane, 'me ho satalla, thata, le matla li nyane.E tla holofala tlas'a khatello ea nako e telele.
Tlhaloso ea Theknoloji
Ho emisa polymerization:ka kettle ea polymerization, metsi a sebelisoang e le seaplane, ammonium persulfate sebelisoa e le initiator, le hlapolla hydrochloric acid sebelisoa e le activator, tetrafluoroethylene polymerized ka khatello ea 0.5-2 MPa le 40-45 ℃ ho fumana likaroloana tse tšoeu, le ho fumana polytetrafluoroethylene e phofshoana e nang le likaroloana tsa boholo bo fapaneng ka mor'a ho sila, ho sila le ho omisa.
Dispersion polymerization:Palo e nyane ea dispersant (ammonium perfluorooctanoate) le stabilizer (motsoako oa fluorocarbon) li eketsoa ho qala polymerization ka sesebelisoa sa redox.Polymerization e arotsoe ka khatello e phahameng le khatello e tlase.Khatello e phahameng ke 2 MPa le 25 ℃, 'me khatello e tlaase ke 0.6-0.7 MPa le 0-38 ℃.Tharollo ea polytetrafluoroethylene polymerization e hlahisoa ke dispersion polymerization, 'me resin ea dispersion e fumanoa ka ho kopanya, ho omisa le ho hlahloba.Emulsion e fetoha mouoane ebe e kenngoa ka kettle ea mahloriso ho etsa mokelikeli o tsitsitseng, ke hore, emulsion e qhalakaneng.
Dispersion resin e na le ts'ebetso e ntle ea ts'ebetso le ts'ebetso ea sehlahisoa.Polytetrafluoroethylene ha e khonehe ebile e na le metsi a fokolang.Boholo ba eona le sebopeho sa likaroloana li na le tšusumetso ea bohlokoa ho metsi a qhibilihang, thepa ea eona ea ho sebetsa le thepa ea sehlahisoa.Phapang ka boleng ba li-resin tse emisitsoeng le li-resin tse hasantsoeng li bakoa ke boholo ba tsona, kabo ea boholo ba likaroloana, le morphology ea likaroloana.Ea pele e na le boholo ba likaroloana tsa millimeter, athe ea ho qetela e na le boholo ba submicron (250-350nm) .Boima ba limolek'hule le crystallinity ea PTFE dispersing resin ka kakaretso e phahame ho feta ea resin e emisitsoeng, e nang le crystallinity ho fihlela ho 96-98%, 'me bophelo ba mokhathala o kobehang bo bolelele ba makhetlo a 2300 ho feta ba li-resin tse emisitsoeng.
Boholo ba likaroloana tsa resin e qhalakaneng e hlahisoang ke emulsion polymerization e nyenyane, kabo ea boholo ba likaroloana e utloahala, 'me morphology ea likaroloana e khona ho laola, ka hona ka ts'ebetso e ntle ea ts'ebetso le ts'ebetso ea sehlahisoa.
Hona joale, hoo e ka bang karolo ea bobeli ho tse tharo ea li-resin tsa PTFE li hlahisoa ka mokhoa oa ho emisa le karolo ea boraro ka mokhoa oa ho hasana.
Ka selemo sa 2019, ho na le kakaretso ea lik'hamphani tse 12 tsa tlhahiso ea PTFE tsa malapeng tse nang le kakaretso ea lithane tse ka bang 140,000 / selemo, tse ikarabellang ho feta 40% ea matla a tlhahiso ea lefats'e.Leha ho le joalo, hoa lokela ho hlokomeloa hore tlhahiso ea PTFE ea Chaena ke haholo-holo e entsoeng ka ente ea lihlahisoa tse bohareng le tse tlaase.
Bokhoni ba tlhahiso ea PTFE ea China bo batla bo tsepame.Likhamphani tse tšeletseng tse holimo indastering li nka karolo ea 83% ea kakaretso ea tlhahiso.Moetapele oa indasteri, Dongyue Group, o nka karolo e ka bang karolo ea boraro ea 'maraka.
Ka 2019, ho hakanngoa hore tlhahiso ea PTFE ea malapeng e ka ba lithane tse 90,000, haholo-holo lihlahisoa tse entsoeng ka ente tse bohareng le tse tlaase, 'me sekhahla se phahameng sa PTFE resin se tlaase haholo, se itšetlehileng haholo ka thepa e tsoang linaheng tse ling. morekisi wa kantle ho naha wa PTFE.Ka 2004, palo ea thepa ea thepa ea PTFE ea Chaena e ile ea feta palo ea thepa e tsoang linaheng tse ling, 'me bokhoni ba eona bo ile ba eketseha haholo ho tloha ka 2010 ho ea ho 2012,' me palo ea thepa ea thepa e tsoang linaheng tse ling e ile ea eketseha selemo le selemo.Ka 2010, palo ea thepa ea thepa ea PTFE ea Chaena e ile ea feta lithane tse 20,000 ka lekhetlo la pele 'me e ntse e le hoo e ka bang lithane tse 20,000 / selemo ho fihlela joale.Bophahamo ba thepa e tsoang linaheng tse ling bo bolokile tekanyo e tsitsitseng ea lithane tse 5000-6000, tseo 70-80% ea PTFE e tsoang linaheng tse ling e leng holimo. -performance dihlahiswa tse fetotsoeng ho finyella litlhoko tsa liindasteri tse tlaase bakeng sa lihlahisoa tse phahameng tsa PTFE.Hajoale, PTFE ea maemo a holimo ea China e fanoa haholo ke lik'hamphani tsa kantle ho naha tse kangDaikinJapane,DuPontUnited States.
Lisebelisoa tsa mantlha tsa 5G
Ka tsoelo-pele e tsoelang pele ea thekenoloji ea puisano ea 5G, tlhokahalo ea lisebelisoa tse tsamaellanang le maqhubu a phahameng le a tlaase a dielectric e boetse e ntse e eketseha.Lisebelisuoa tsa Fluorine li na le ts'ebetso e ntle haholo 'me ha li sitisoe habonolo ke maqhubu a seea-le-moea a phahameng.Li-fluoropolymers li na le thepa e ntle ea dielectric e tlase le lintlha tse tlase tsa tahlehelo tlasa maemo a phahameng a maqhubu.Ba ka fana ka li-frequency tse phahameng haholo le ts'ebetso e potlakileng bakeng sa litsi tsa data, litora tsa phetisetso ea matšoao, le lisebelisoa tsa motho tsa elektroniki.Ka hona, ka ho potlakisa ha 5G, tlhoko ea 'maraka ea li-fluoropolymers tse sebetsang hantle le eona e ntse e eketseha.
Lisebelisoa tse ka sehloohong ke likhoele tsa 5G tsa puisano tse lebelo le holimo, li-semiconductors, li-PCB le likarolo tsa antenna.
Mohala o phahameng oa maqhubu le lebelo le phahameng
Teflon resin e ntlafatsa ts'ebetso ea motlakase ea likarolo tsa li-cable insulation le lijakete le ho li fa tšireletso e ke keng ea bapisoa ea mollo.Litšobotsi tsena li bohlokoa haholo bakeng sa litsamaiso tsa likhoele (tse kang High-speed cable) bakeng sa marang-rang a sebaka sa lehae (LAN), litsi tsa data, le lits'ebetso tse ling tse sebetsang hantle haholo tsa mehala.Ka hona, li-fluoropolymers li tla sebelisoa mehala ea phetisetso ea maqhubu a phahameng a nang le mesebetsi e mengata, lipalo tse kholo tsa phetiso ea data, le tlhaloso e phahameng.
Tlhahiso ea semiconductor
5G e ama nts'etsopele ea indasteri ea semiconductor le ho fetola litlhoko tsa indasteri.Li-polymer tsa PTFE le tsona li bapala karolo ea bohlokoa lits'ebetsong tsa tlhahiso ea semiconductor.
PCB le likarolo tsa antenna
Nakong ea 5G, liboto tsa potoloho tse hatisitsoeng (PCBs) li tla itšetleha haholo ka lisebelisoa tse phahameng tsa fluoropolymer, tse ka ntlafatsang boleng ba phetisetso ea 5G.PTFE e sebelisoa bakeng sa likarolo tsa prepreg ho li-PCB le litsamaiso tsa antenna ho fihlela likhokahano tsa maqhubu a holimo.
Nako ea poso: Feb-26-2019