I-PTFE emulsion impregnation iyinqubo ewumongo yokukhiqiza Indwangu ye-PTFE enezinga eliphezulu lokushisa . Isisekelo se-PTFE sokuhlakazeka sisodwa asihlali simanzi, singena, noma sihlangana kahle nendwangu ye-fiberglass. Ukuze kuzuzwe ukunamathiswa okufanayo, ukunamathela okuqinile, nezindawo ezingenasici, abakhiqizi bangeza uhla lwezinsiza ezisebenzayo.
I-Aokai PTFE ithuthukise ukwakheka kokumila kuyo yonke imikhiqizo eminingi. Lo mhlahlandlela uchaza izesekeli eziyisishiyagalombili ezivame kakhulu - ezikwenzayo, ukuthi zisebenza kanjani, nokuthi zisetshenziswa nini.
Ama-ejenti Okumanzisa Nezingenelayo - Isengezo Esiyinhloko
I-emulsion ye-PTFE eluhlaza inokuqina okuphezulu kwendawo, okuholela ekungeneni kabi emiculweni nasezindwangu. Ama-wetting agents anciphisa ukungezwani kwendawo, okuvumela i-emulsion ukuthi isakaze futhi ingene ngokuphumelelayo.
Uhlobo |
Izibonelo |
Izici |
Ama-Nonionic surfactants (okujwayelekile) |
Ama-fatty alcohol polyoxyethylene ethers (AEO series), alkyl polyglycosides (APG) |
Izinzile, iyahambisana kakhulu |
Ama-surfactants e-fluorocarbon |
Uchungechunge lweChemours Capstone (i-short-chain, PFOS/PFOA-free) |
I-Ultra-low surface tension, ukungena okuhle kakhulu kuma-substrates aqinile ukuya kuma-manzi. Umthamo kufanele ulawulwe ngokuqinile ukuze ugweme ukwehla kokusebenza kwendawo ngemuva kokucwiliswa. |
Inothi elingukhiye: Ama-surfactants e-Fluorocarbon asebenza kahle kakhulu kodwa adinga ukudoswa ngokucophelela. Ukweqile kungathuthela endaweni enamathelayo ngesikhathi sokucwilisa futhi kunciphise ukusebenza okunganamathi.
Ama-Thickeners kanye Ne-Rheology Modifiers - Ukulawula Ukuthatha I-Coating-Up
Ama-thickeners alungisa i-emulsion viscosity ukuvimbela ukuconsa futhi alawule ngokunembile ukujiya kokunamathela.
Uhlobo |
Izibonelo |
Izici |
Ama-cellulose ethers |
I-Hydroxyethyl cellulose (HEC), i-methyl cellulose (MC) |
Incibilika emanzini, ishise ngokuphelele ngesikhathi i-sintering |
Ama-alkali-swellable acrylic thickeners (ASE) |
Uchungechunge lwe-ASE |
Ukusebenza kahle okuphezulu, i-thixotropy eguquguqukayo (engathathi hlangothi ngamanzi ammonia) |
I-Polyurethane associative thickeners (HEUR) |
HOUR izinhlobo |
I-leveling enhle kakhulu, i-anti-splash |
Ama-thickeners we-Inorganic |
I-silica evuthayo, i-bentonite |
Thuthukisa i-thixotropy nokumelana nokushisa; inganciphisa ukucaca kwe-coating |
Ithiphu elisebenzayo: Ukuze uthole ama-coatings azacile, afanayo endwangu eqinile, sebenzisa ukwakheka okune-viscosity ephansi okunokuqina okuncane. Ngezingubo ezisindayo noma izindwangu ezivulekile, khulisa ukuqina ukuze ulawule ukujula kokungena.
Izilawuli ze-pH kanye ne-Emulsion Stabilizers
Ama-emulsion e-PTFE ngokuvamile azinziswa ama-anionic surfactants futhi agcinwe ku-pH 9–10 ukuvimbela ukuhlangana.
Amanzi e-ammonia (28 wt%): Isilawuli esisetshenziswa kakhulu. Ishintshashintsha ngokuphelele phakathi nokoma/i-sintering, ingashiyi izinsalela ezibeka engcupheni ukusebenza.
Ama-stabilizers asizayo: Ama-Anionic surfactants afana ne-sodium dodecyl sulfate (SDS) kanye ne-alkyl sulfonate yesibili (SAS) athuthukisa ukumelana kwe-shear kwe-emulsion ngesikhathi sokupompa nokuyaluza.
I-PTFE ehlanzekile inamandla okubopha abuthaka ngokwedlulele nama-substrates. Abagqugquzeli bokunamathela babalulekile.
1. Silane coupling agents
Izibonelo: I-Aminosilane (KH-550), i-epoxy silane.
I-Mechanism: Ngemva kwe-hydrolysis, benza izibopho zamakhemikhali nge-fiberglass - izibopho ze-Si-O-Si phakathi kwe-silane nengilazi, namaqembu asebenzayo e-organic asebenzisana ne-PTFE noma amanye ama-polymers.
Isexwayiso: Kufanele wengezwe ngokucophelela ukugwema ukuphuka kwe-emulsion. Kutuswa i-pre-hydrolysis noma ngemva kokwelashwa (ukufaka endwangu ngaphambi kokukhulelwa).
2. I-High-temperature resistant bonding resin dispersions
Izibonelo: Ukuhlakazeka kwamanzi kwe-polyamide-imide (PAI), i-polyphenylene sulfide (PPS), i-polyethersulfone (PES).
Isicelo: Izinto eziwumgogodla zokumboza okungezona izinti kanye nezibophezelo ezivamile zemidiya yesihlungi se-fiberglass efakiwe kanye nezinto zolwelwesi. Bathuthukisa ukunamathela nokubumbana ekuhlanganiseni kokugcina.
I-PTFE ine-viscosity ephezulu kakhulu yokuncibilika. Izinsiza zokwenza ifilimu zenza kube lula ukuhlangana kwezinhlayiyana ngesikhathi sokucwiliswa.
Lawa ma-fluoropolymer angancibilika enza izigaba zokubopha ezincibilikisiwe phakathi kwezinhlayiya ze-PTFE ngesikhathi sokucwiliswa, okukhuphula ukubumbana kokunamathela kanye nokunamathela kobuso obuhlangene. Ziwusizo ikakhulukazi ezingxenyeni eziwugqinsi noma lapho izinga lokushisa eliphansi le-sintering lifunwa.
Amafayili Asebenzayo - Izakhiwo Zangokwezifiso Ezifunwayo
Amafayili ahlakazeka ngokuqondile ku-emulsion ukuze anikeze izakhiwo ezithile.
Uhlobo Lokugcwalisa |
Izibonelo |
Inhloso |
Izigcwalisi ezingagqoki |
I-nano/micron alumina, i-silicon carbide, i-silica |
Thuthukisa ukumelana nemihuzuko |
I-conductive / antistatic fillers |
I-Carbon emnyama, i-graphite, i-carbon nanotubes (enezihlakaza) |
Susa ukushaja okumile |
Izingulube zombala |
I-iron oxide emnyama, i-titanium dioxide |
Ukufaka ikhodi yombala, ukumelana ne-UV |
Okubalulekile: Izigcwalisi zidinga izisabalalisi zokumanzisa ezifanele (isb., ama-polycarboxylate) ukuze kuvinjelwe ukuhlangana nokuqinisekisa ukusatshalaliswa okufanayo.
Ama-Defoamers - Ukuvimbela ama-Pinholes
Amagwebu amakhulu kwenzeka ngesikhathi sokukhulelwa, okubangela ukukhubazeka kwe-pinhole kuma-coatings.
Uhlobo |
Izici |
Ama-defoam angenayo i-silicone (okuncanyelwayo) |
I-polyether-based, i-mineral oil-based based. Iqeda ingozi yezinsalela ze-silicone eziphazamisa ukunamathela kwesibili noma ukwelashwa kwendawo. |
Ama-Silicone defoamers |
Umthamo onamandla wokuqeda amagwebu, kodwa ukusetshenziswa kukhawulelwe ezinhlelweni lapho izinsalela ze-silicone zokulandelela zamukelekile. |
Okutuswayo: Kumateyipu e-PTFE azosetshenziswa ezinhlelweni zokusebenza eziphezulu zokubopha noma zokuhlanganisa, ama-defoam angenayo i-silicone akhethwa kakhulu.
Landela izincibilikisi zamaphuzu aphezulu abilayo noma ama-polyols (i-propylene glycol, i-ethylene glycol) ngezinye izikhathi ayengezwa ukuze ahwamuke kancane futhi avimbele ukuqhekeka ekumisweni ngokushesha.
Okubalulekile: Lezi azivamile ukusetshenziswa ezinqubweni zokucwilisa, njengoba zonke izingxenye ze-organic kufanele zibole ngokugcwele ngesikhathi sokucwiliswa. Ukusebenzisa ngokweqile kungashiya izinsalela zekhabhoni.
Isifinyezo - Ukukhetha Iphakheji Elisizayo Elilungile
Igoli |
Kunconyiwe Umsizi |
Thuthukisa ukumanzisa nokungena |
I-ejenti yokumanzisa i-Nonionic noma i-fluorocarbon |
Lawula isisindo sokugqoka |
I-Thickener (i-cellulose noma i-HEUR) |
Zinzisa i-emulsion, vimbela ukuhlangana |
Isilawuli se-pH (amanzi ammonia) + i-anionic stabilizer |
Qinisa ibhondi ye-PTFE-substrate |
I-ejenti yokuhlanganisa ye-Silane noma i-PAI/PPS yokuhlakazwa kwenhlaka |
Thuthukisa ukwakheka kwefilimu, izinga lokushisa eliphansi le-sintering |
Ukuhlakazwa kwe-PFA noma i-FEP |
Engeza ukumelana nokugqoka |
I-alumina noma i-silicon carbide filler |
Engeza conductivity |
I-Carbon emnyama, i-graphite, noma i-CNT |
Vimbela izimbobo kusuka kugwebu |
I-defoamer yamahhala ye-Silicone |
Ukomisa kancane kuma-coatings aminyene |
I-Humectant (i-propylene glycol) - sebenzisa kancane |
I-Aokai PTFE ingakha izingxube zokumilisela zangokwezifiso zezinhlelo zokusebenza ezithile. Xhumana nathi nge-substrate yakho, imfuneko yokujiya kwe-coating, kanye nemigomo yokusebenza.
Okuqukethwe okungenhla kunikezwa ngu I-Jiangsu Aokai New Materials Technology Co., Ltd.
Uma ufisa ukufunda kabanzi mayelana nokucaciswa okuningiliziwe, izimo zohlelo lokusebenza nezixazululo ezenziwe ngokwezifiso zohlu oluphelele lomkhiqizo wethu, okuhlanganisa izindwangu ze-PTFE ezishisa kakhulu, amakhasethi e-PTFE, amabhande anezikhala we-PTFE, amabhande omshini wokubopha angenamthungo, indwangu ye-PTFE enohlangothi olulodwa, amabhande angamelana nokushisa okuphezulu, namabhande avikela ingilazi aphezulu:
Sihlala sisekela ifilosofi yobungcweti nobuqotho, futhi sizibophezele ekukunikezeni izisombululo eziphuma endaweni eyodwa kanye nezinsizakalo ezicatshangelwayo.
