Tšusumetso ea Methyl Hydroxyethyl Cellulose Ho Epoxy Resin Matrix

Methyl Hydroxyethyl Cellulose (MHEC) ke ether ea cellulose e qhibilihang ka metsing e sebelisoang haholo indastering ea kaho e le mochine o motenya le oa rheology tsamaisong ea cementitious. E tsebahala ka ho ntlafatsa thepa ea ho phalla, ho sebetsa, le ho khomarela lisebelisoa tsa samente, e leng se etsang hore e be motsoako o loketseng bakeng sa lihlahisoa tsa konkreite, seretse le grout. Leha ho le joalo, phello ea MHEC ho thepa ea matrices ea epoxy resin e fumane tlhokomelo e fokolang.

Li-resin tsa epoxy ke sehlopha sa li-polymers tsa thermosetting tse sebelisoang haholo indastering ea lifofane, tsa likoloi le tsa kaho ka lebaka la thepa ea tsona e ntle ea mochini, ho hanyetsa lik'hemik'hale, le ho khomarela likaroloana tse fapaneng. Leha ho le joalo, e ka ba brittle mme e bonts'a matla a ts'usumetso e tlase, e fokotsang ts'ebeliso ea bona lits'ebetsong tse ling. Ho rarolla bothata bona, bafuputsi ba ile ba etsa lipatlisiso ka tšebeliso ea li-additives tse fapa-fapaneng, ho akarelletsa le cellulose ethers, ho ntlafatsa ho tiea le ho hanyetsa phello ea li-epoxy resin.

Liphuputso tse 'maloa li tlalehile tšebeliso ea MHEC e le tlatsetso ho matrices a epoxy resin. Ka mohlala, thuto ea Kim et al. (2019) e ile ea etsa lipatlisiso ka phello ea MHEC ho thepa ea mochini ea li-composites tse thehiloeng ho epoxy. Bafuputsi ba fumane hore ho eketsoa ha MHEC ho ntlafalitse ho thatafala ha fracture le matla a tšusumetso ea metsoako, hammoho le botsitso ba mocheso le ho hanyetsa metsi. Bangoli ba ile ba bolela hore lintlafatso tsena ke bokhoni ba MHEC ba ho theha maqhama a hydrogen le epoxy resin matrix, e leng se ileng sa eketsa ho kopana ha sefahleho le ho thibela ho ata ha crack.

Phuputso e 'ngoe ea Pan et al. (2017) e ile ea batlisisa phello ea MHEC boitšoarong ba ho folisa le thepa ea mochine ea tsamaiso ea epoxy resin. Bafuputsi ba fumane hore ho eketsoa ha MHEC ho liehile nako ea ho folisa le ho fokotsa mocheso o phahameng oa ho folisa oa epoxy resin, e leng se boleloang ke tlhaho ea hydrophilic ea MHEC. Leha ho le joalo, ho eketsoa ha MHEC ho boetse ho ntlafalitse matla a tsitsipano le bolelele nakong ea khefu ea resin ea epoxy e phekotsoeng, e bontšang hore MHEC e ka ntlafatsa ho feto-fetoha ha maemo le ho tiea ha epoxy resin matrix.

Ntle le ho ntlafatsa thepa ea mechine ea matrices a epoxy resin, MHEC e boetse e tlalehoa hore e na le tšusumetso e ntle ho thepa ea rheological ea litsamaiso tse thehiloeng ho epoxy. Ka mohlala, thuto ea Li et al. (2019) e ile ea etsa lipatlisiso ka phello ea MHEC ho rheology le thepa ea mochini ea sekhomaretsi se thehiloeng ho epoxy. Bafuputsi ba fumane hore ho eketsoa ha MHEC ho ntlafalitse boitšoaro ba thixotropic ba sekhomaretsi le ho fokotsa ho lokisoa ha li-fillers. Ho eketsoa ha MHEC ho boetse ho ntlafalitse matla a ho khomarela le ho hanyetsa tšusumetso ea sekhomaretsi.

Ka kakaretso, tšebeliso ea MHEC e le tlatsetso ho matrices a epoxy resin e bontšitse liphello tse tšepisang ho ntlafatsa thepa ea mochine, ho tiea le boitšoaro ba rheological ea tsamaiso. Bokhoni ba MHEC ba ho theha maqhama a hydrogen le matrix ea epoxy resin ho lumeloa hore ke mokhoa oa bohlokoa ka mor'a lintlafatso tsena, tse ka lebisang ho hokahaneng ha sefahleho le ho fokotsa ho ata ha crack. Leha ho le joalo, ho hlokahala lipatlisiso tse eketsehileng ho utloisisa ka botlalo phello ea MHEC ho thepa ea matrices a epoxy resin le ho ntlafatsa tšebeliso ea ether ena ea cellulose ka mekhoa e thehiloeng ho epoxy.