Umphumela wokuqina kwe-cellulose ether

I-ether ye-celluloseInika ubumba olumanzi i-viscosity enhle kakhulu, ingakhulisa kakhulu ikhono lobumba olumanzi kanye nezindawo eziphansi, ithuthukise ukusebenza kobumba olulwa nokuwa, olusetshenziswa kabanzi kubumba oluyi-plaster, uhlelo lokuvikela lwangaphandle kanye nobumba oluhlanganisa izitini. Umphumela wokuqina we-cellulose ether ungakhulisa futhi ukufana kanye nekhono lokulwa nokuhlakazeka kwezinto ezintsha ezisekelwe kusimende, ukuvimbela ukuhlukaniswa, ukuhlukaniswa kanye nokopha kobumba oluyi-mortar kanye nokhonkolo, ingasetshenziswa kukhonkolo yefayibha, kukhonkolo engaphansi kwamanzi kanye nokhonkolo oluzicindezelayo.

I-ether ye-cellulosekwandisa i-viscosity yezinto ezisekelwe kusimende kusukela ku-viscosity yesisombululo se-cellulose ether. Ngokuvamile sebenzisa i-“viscosity” le metric ukuhlola i-viscosity yesisombululo se-cellulose ether, i-viscosity ye-cellulose ether ngokuvamile ibhekisela ekugxilweni okuthile (2%) kwesisombululo se-cellulose ether, izinga lokushisa (20 ℃) ​​kanye nesilinganiso sokushefa (noma isivinini sokujika, njenge-20 RPM), kanye nezinhlinzeko zethuluzi lokulinganisa, njenge-viscometer ejikelezayo elinganisiwe ngamanani e-viscometer. I-Viscosity iyipharamitha ebalulekile yokuhlola ukusebenza kwe-cellulose ether kanye ne-cellulose ether, lapho i-viscosity yesisombululo iphakama, i-viscosity yezinto eziyisisekelo zesimende ingcono, i-viscosity yezinto eziyisisekelo ingakwazi, ukumelana nokuwa kanye nokumelana namandla okusabalala, kodwa uma i-viscosity inkulu kakhulu, ingathinta ukuhamba kwezinto eziyisisekelo zesimende kanye nokuhamba (njengokwakhiwa kwe-plaster mortar adhesive plaster). Ngakho-ke, i-viscosity ye-cellulose ether esetshenziswa ku-mortar exutshwe kahle ivame ukuba yi-15,000 ~ 60,000 Mpa. s-1, kanye ne-viscosity ye-cellulose ether kudingeka ibe phansi ukuze kube nodaka oluzilinganisayo kanye ne-self-compactconcrete enezidingo eziphezulu zokugeleza. Ngaphezu kwalokho, umphumela wokujiya we-cellulose ether uzokwandisa isidingo samanzi sezinto ezisekelwe kusimende, ngaleyo ndlela kwandiswe umkhiqizo wodaka. I-viscosity yesisombululo se-cellulose ether incike esisindweni sama-molecule (noma izinga le-polymerization) kanye nokuhlushwa kwe-cellulose ether, izinga lokushisa lesisombululo, izinga lokugunda, kanye nendlela yokuhlola. Lapho izinga le-polymerization le-cellulose ether liphezulu, isisindo sama-molecule sikhulu, kulapho i-viscosity yesisombululo sayo samanzi iphakama; Lapho umthamo (noma ukuhlushwa) kwe-cellulose ether kuphakeme, kulapho i-viscosity yesisombululo sayo samanzi iphakama, kodwa uma kusetshenziswa kufanele kunakwe ukukhethwa komthamo ofanele, ukuze kungaxubeki kakhulu, kuthinte ukusebenza kodaka kanye nokhonkolo; Njengezinye izinto eziningi eziwuketshezi, i-viscosity yesisombululo se-cellulose ether izoncipha ngokwanda kwezinga lokushisa, futhi lapho ukuhlushwa kwe-cellulose ether kuphakeme, kulapho umphumela wokushisa uba mkhulu; Isixazululo se-cellulose ether ngokuvamile siyi-pseudoplastic body ene-shear thinning. Uma izinga lokucheba liphezulu, i-viscosity iyancipha.

Ngakho-ke, ukuhlangana kwe-mortar kuzoncishiswa ngamandla angaphandle, okusiza ekwakheni i-mortar yokuklwebha, okwenza i-mortar ibe nokusebenza kahle kanye nokuhlangana okuhle. Kodwa-ke, isixazululo se-cellulose ether sizobonisa izici zoketshezi lwe-Newtonian lapho ukuhlushwa kuphansi kakhulu futhi i-viscosity incane kakhulu. Lapho ukuhlushwa kwanda, isixazululo siveza kancane kancane izici zoketshezi lwe-pseudoplastic, futhi lapho ukuhlushwa kuphakeme, kulapho i-pseudoplastic isobala khona.