I-epoxy ijwayelekile kuwo wonke umuntu.Lolu hlobo lwento ephilayo lubizwa nangokuthi inhlaka yokwenziwa, i-resin glue, njll. Luwuhlobo olubaluleke kakhulu lwepulasitiki ebeka ukushisa.Ngenxa yenani elikhulu lamaqembu asebenzayo kanye ne-polar, ama-molecule e-epoxy resin angaxhunyaniswa futhi elashwe ngezinhlobo ezahlukene zama-ejenti okwelapha, futhi izakhiwo ezihlukene zingakhiwa ngokungeza izithasiselo ezihlukahlukene.

Njenge-thermosetting resin, i-epoxy resin inezinzuzo zezakhiwo ezinhle zomzimba, ukufakwa kukagesi, ukunamathela okuhle, ukumelana ne-alkali, ukumelana nokuhuzuka, ukukhiqizwa okuhle kakhulu, ukuzinza kanye nezindleko eziphansi.Ingenye yezinsalela eziyisisekelo ezibanzi kakhulu ezisetshenziswa ezintweni ze-polymer .. Ngemva kweminyaka engaphezu kwengu-60 yokuthuthukiswa, i-epoxy resin isetshenziswe ezinhlobonhlobo, imishini, i-aerospace, ukwakhiwa kanye neminye imikhakha.

Njengamanje, i-epoxy resin isetshenziswa kakhulu embonini yokuhlanganisa, futhi ukunamathela okwenziwa ngayo njenge-substrate kubizwa ngokuthi i-epoxy resin coating.Kubikwa ukuthi i-epoxy resin coating iwugqinsi oluyisivikelo olungasetshenziswa ukumboza noma yini, kusukela phansi, izinto zikagesi ezinkulu kuya emikhiqizweni emincane ye-elekthronikhi, ukuze zivikeleke emonakalweni noma ekuguge.Ngaphezu kokuhlala isikhathi eside, izimbotshana ze-epoxy resin ngokuvamile azikwazi ukumelana nezinto ezifana nokugqwala nokugqwala kwamakhemikhali, ngakho zidumile ezimbonini nasekusetshenzisweni okuningi okuhlukahlukene.

Imfihlo yokuqina kwe-epoxy coating

Njengoba i-epoxy resin ingeyesigaba se-polymer ewuketshezi, idinga usizo lwama-ejenti elaphayo, izithasiselo nemibala ukuze ifakwe embotsheni ye-epoxy engagqwali.Phakathi kwazo, ama-nano oxides avame ukungezwa njengezingulube nezigcwalisi embotsheni ye-epoxy resin, futhi abameleli abajwayelekile yi-silica(SiO2), i-titanium dioxide(TiO2), i-aluminium oxide(Al2O3), i-zinc oxide(ZnO), kanye nama-oxide omhlaba angavamile.Ngobukhulu bawo obukhethekile kanye nesakhiwo, lawa ma-nano oxides abonisa izici eziningi eziyingqayizivele zomzimba namakhemikhali, ezingathuthukisa kakhulu izakhiwo zemishini nezokunqanda ukubola kwentolo.

Kunezindlela ezimbili eziyinhloko zezinhlayiya ze-oxides nano zokuthuthukisa ukusebenza kokuvikela kwezingubo ze-epoxy:

Okokuqala, ngosayizi wayo omncane, ingakwazi ukugcwalisa ngokuphumelelayo imifantu emincane kanye nama-pores akhiwe ukuncipha kwendawo ngesikhathi senqubo yokuphulukisa ye-epoxy resin, ukunciphisa indlela yokusabalalisa yemidiya ebolayo, futhi kuthuthukise ukuvikela nokusebenza kokuvikela kokumboza;

Okwesibili ukusebenzisa ubulukhuni obuphezulu bezinhlayiya ze-oxide ukwandisa ubulukhuni be-epoxy resin, ngaleyo ndlela kuthuthukiswe izakhiwo zemishini ye-coating.

Ukwengeza, ukwengeza inani elifanele lezinhlayiya ze-nano oxide nakho kungakhuphula amandla okuxhuma esixhumi esibonakalayo se-epoxy coating futhi kunwebe impilo yesevisi yokumboza.

Indima yei-nano silicapowder:

Phakathi kwalawa ma-oxide nanopowder, i-nano silicon dioxide (SiO2) iwuhlobo lokuba khona okuphezulu.I-Silica nano i-inorganic non-metallic material enokumelana nokushisa okuhle kakhulu kanye nokumelana ne-oxidation.Isimo sayo samangqamuzana siwuhlaka lwenethiwekhi enezinhlangothi ezintathu ezine-tetrahedron ye-[SiO4] njengeyunithi yesakhiwo eyisisekelo.Phakathi kwazo, ama-athomu e-oksijeni ne-silicon axhunywe ngokuqondile ngamabhondi e-covalent, futhi isakhiwo siqinile, ngakho sinezici zamakhemikhali ezizinzile, ukushisa okuhle kakhulu nokuphikiswa kwesimo sezulu, njll.

I-Nano SiO2 idlala kakhulu indima yesigcwalisi esilwa nokugqwala embotsheni ye-epoxy.Ngakolunye uhlangothi, i-silicon dioxide ingagcwalisa ngempumelelo imifantu emincane kanye nama-pores akhiqizwa inqubo yokuphulukisa ye-epoxy resin, futhi ithuthukise ukumelana nokungena kokunamathela;ngakolunye uhlangothi, , Amaqembu asebenzayo we-nano-SiO2 kanye ne-epoxy resin angakha amaphuzu axhumanisa ngokomzimba/amakhemikhali ngokusebenzisa i-adsorption noma ukusabela, futhi ethule amabhondi e-Si—O—Si no-Si—O—C ochungechungeni lwamangqamuzana ukuze akheke. isakhiwo senethiwekhi esinezinhlangothi ezintathu ukuze sithuthukise ukunamathela kokunamathela.Ngaphezu kwalokho, ubulukhuni obukhulu be-nano-SiO2 bungathuthukisa kakhulu ukumelana nokugqoka kwe-coating, ngaleyo ndlela kwandise impilo yesevisi ye-coating.