Le hoja graphene e atisa ho bitsoa "panacea", ho ke ke ha latoloa hore e na le lisebelisoa tse ntle tsa optical, tsa motlakase le tsa mechine, ke ka lebaka leo indasteri e labalabelang ho hasanya graphene e le nanofiller ho li-polymers kapa matrice inorganic.Le hoja e se na phello e ikhethang ea "ho fetola lejoe khauta", e ka boela ea ntlafatsa karolo ea ts'ebetso ea matrix ka har'a mefuta e itseng le ho atolosa mefuta ea eona ea ts'ebeliso.

 

Hona joale, lisebelisoa tse tloaelehileng tsa motsoako oa graphene li ka aroloa haholo-holo ka polymer-based le ceramic-based.Ho na le liphuputso tse ling ho tsa pele.

 

Epoxy resin (EP), e le matrix a resin e sebelisoang hangata, e na le thepa e ntle ea ho khomarela, matla a mochine, ho hanyetsa mocheso le thepa ea dielectric, empa e na le palo e kholo ea lihlopha tsa epoxy ka mor'a ho phekola, 'me crosslinking density e phahame haholo, kahoo e fumanoeng. lihlahisoa li brittle 'me li na le ts'ebetso e mpe ea ho hanyetsa, motlakase le mocheso oa mocheso.Graphene ke ntho e thata ka ho fetisisa lefatšeng 'me e na le motlakase o motle haholo le mocheso oa mocheso.Ka hona, thepa e kopantsoeng e entsoeng ka ho kopanya graphene le EP e na le melemo ea bobeli 'me e na le boleng bo botle ba kopo.

 

     Nano Graphenee na le sebaka se seholo sa holim'a metsi, 'me phallo ea limolek'hule ea graphene e ka etsa sebopeho se matla le polymer.Lihlopha tse sebetsang joalo ka lihlopha tsa hydroxyl le ts'ebetso ea tlhahiso li tla fetola graphene hore e be boemo bo sosobaneng.Lits'oants'o tsena tsa nanoscale li ntlafatsa tšebelisano lipakeng tsa liketane tsa graphene le polymer.Bokaholimo ba graphene e sebetsang e na le hydroxyl, carboxyl le lihlopha tse ling tsa lik'hemik'hale, tse ka etsang maqhama a matla a haedrojene ka lipolymer tsa polar joalo ka polymethyl methacrylate.Graphene e na le sebopeho se ikhethang sa mahlakore a mabeli le thepa e mengata e babatsehang, 'me e na le bokhoni bo boholo ba ts'ebeliso ea ho ntlafatsa thepa ea mocheso, motlakase le mochine oa EP.

 

1. Graphene ka epoxy resin - ho ntlafatsa thepa ea motlakase

Graphene e na le ts'ebetso e ntle ea motlakase le thepa ea motlakase, 'me e na le litšobotsi tsa litekanyetso tse tlase le ts'ebetso e phahameng.Ke sesebelisoa sa conductive se ka bang teng bakeng sa epoxy resin EP.Bafuputsi ba hlahisitse GO e phekotsoeng holimo ho EP ka in-situ thermal polymerization.Lintho tse akaretsang tsa likarolo tse lumellanang tsa GO / EP (tse kang mechine, motlakase le thepa ea mocheso, joalo-joalo) li ile tsa ntlafatsoa haholo, 'me motlakase oa motlakase o ile oa eketseha ka taelo ea 6.5 ea boholo.

 

Graphene e fetotsoeng e kopantsoe le resin ea epoxy, e eketsa 2% ea graphene e fetotsoeng, modulus ea polokelo ea lisebelisoa tsa epoxy composite e eketseha ka 113%, e eketsa 4%, matla a eketseha ka 38%.Ho hanyetsa ha resin e hloekileng ea EP ke 10 ^ 17 ohm.cm, 'me ho hanyetsa ho theoha ka litaelo tsa 6.5 tsa boholo ka mor'a ho eketsa graphene oxide.

 

2. Tšebeliso ea graphene ka epoxy resin - conductivity ea mocheso

Ho eketsacarbon nanotubes(CNTs)le graphene ho epoxy resin, ha u eketsa 20% CNTs le 20% GNPs, conductivity ea mocheso oa thepa e kopantsoeng e ka fihla ho 7.3W / mK.

 

3. Ho sebelisoa ha graphene ka epoxy resin - ho fokotseha ha lelakabe

Ha ho kenyelletsoa 5 wt% organic functionalized graphene oxide, boleng ba ho khutlisa lelakabe bo eketsehile ka 23.7%, 'me ha ho kenyelletsoa 5 wt%, bo eketsehile ka 43.9%.

 

Graphene e na le litšobotsi tsa ho tiea ho hoholo, botsitso bo boholo le ho tiea.Joalo ka mofetoleli oa epoxy resin EP, e ka ntlafatsa haholo thepa ea mochini oa lisebelisoa tse kopaneng, mme ea hlola bongata bo boholo ba li-filler tse tloaelehileng tsa inorganic le katleho e tlase ea phetoho le mefokolo e meng.Bafuputsi ba sebelisitse li-nanocomposites tsa GO/EP tse fetotsoeng ka lik'hemik'hale.Ha w(GO) = 0.0375%, matla a khatello le ho tiea ha lihlopha tse lumellanang li eketsehile ka 48.3% le 1185.2% ka ho latellana.Bo-rasaense ba ile ba ithuta phello ea phetoho ea ho hanyetsa mokhathala le ho tiea ha tsamaiso ea GO / EP: ha w (GO) = 0.1%, modulus ea tensile ea motsoako o ile oa eketseha ka hoo e ka bang 12%;ha w (GO) = 1.0%, Ho tiea ha flexural le matla a motsoako li ile tsa eketseha ka 12% le 23%, ka ho latellana.

 


Nako ea poso: Feb-21-2022

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