Ukuqina komphumela we-cellulose ether

I-cellulose etherifaka udaka olumanzi olune-viscosity enhle kakhulu, ingakhuphula kakhulu amandla okubopha udaka olumanzi kanye nezimpande, ithuthukise ukusebenza kwe-anti-sag yodaka, esetshenziswa kabanzi odakeni lwe-plaster, uhlelo lokufakwa kwangaphandle kanye nodaka lokubopha ngezitini. Ukuqina komphumela we-cellulose ether nakho kungakhuphula ukufana kanye nekhono lokulwa nokuhlakazeka kwezinto ezintsha ezisekelwe kusimende, ukuvimbela ukuhlukaniswa, ukuhlukaniswa kanye nokopha kodaka nokhonkolo, kungasetshenziswa ku-fiber ukhonkolo, ukhonkolo ongaphansi kwamanzi kanye nokhonkolo ozihlanganisayo.

I-cellulose etherkwandisa i-viscosity yezinto ezisekelwe kusimende kusukela ku-viscosity yesisombululo se-cellulose ether. Ngokuvamile sebenzisa i-“viscosity” le metric ukuze uhlole i-viscosity yesixazululo se-cellulose ether, i-viscosity ye-cellulose ether ngokuvamile ibhekisela ekuhlanganiseni okuthile (2%) kwesisombululo se-cellulose ether, izinga lokushisa (20 ℃) ​​kanye nesilinganiso sokugunda (noma isivinini sokuzungezisa, esifana no-20 RPM) izimo, nezinhlinzeko zethuluzi lokulinganisa, njengamavelu e-viscometer ajikelezayo alinganisa i-viscosity. I-viscosity iyipharamitha ebalulekile yokuhlola ukusebenza kwe-cellulose ether ne-cellulose ether, ukuphakama kwe-viscosity yesixazululo, i-viscosity yezinto eziyisisekelo zikasimende, i-viscosity yezinto eziyisisekelo ingakwazi, ukumelana nokugoqa kanye nokumelana namandla okuhlakazeka, kodwa uma i-viscosity inkulu kakhulu, ingathinta ukuhamba kwesisekelo sikasimende nokuhamba kahle (njengokwakhiwa kwe-plaster yokunamathisela osimende). Ngakho-ke, i-viscosity ye-cellulose ether esetshenziswa odakeni oluxutshwe okomile ngokuvamile i-15,000 ~ 60,000 Mpa. s-1, kanye ne-viscosity ye-cellulose ether iyadingeka ukuthi ibe ngaphansi odakeni oluzilinganisayo kanye ne-self-compactconcrete enezidingo eziphezulu zoketshezi. Ukwengeza, umphumela wokuqina we-cellulose ether uzokwandisa isidingo samanzi sezinto ezisekelwe kusimende, ngaleyo ndlela ukwandisa ukukhishwa kodaka. I-viscosity yesisombululo se-cellulose ether incike esisindweni samangqamuzana (noma idigri ye-polymerization) kanye nokugxila kwe-cellulose ether, izinga lokushisa lesixazululo, izinga le-shear, kanye nendlela yokuhlola. Ukuphakama kwedigri ye-polymerization ye-cellulose ether, sikhulu isisindo samangqamuzana, ukuphakama kwe-viscosity yesisombululo sayo esinamanzi; Ukuphakama kwesilinganiso (noma ukugxila) kwe-cellulose ether, ukuphakama kwe-viscosity yesisombululo saso samanzi, kodwa ekusetshenzisweni kufanele kunake ukukhethwa kwesilinganiso esifanele, ukuze kungaxubeki kakhulu, kuthinte ukusebenza kodaka nokhonkolo; Njengoketshezi oluningi, i-viscosity yesisombululo se-cellulose ether izokwehla ngokunyuka kwezinga lokushisa, futhi ukuphakama kwe-cellulose ether, umphumela omkhulu wokushisa; Isixazululo se-cellulose ether ngokuvamile siwumzimba we-pseudoplastic onempahla yokugunda kwe-shear. Lapho izinga lokugunda liphakeme, i-viscosity iyancipha.

Ngakho-ke, ukuhlangana kodaka kuzoncishiswa ngamandla angaphandle, okuhambisana nokwakhiwa kokukhuhla kodaka, ukwenza udaka kungaba nokusebenza okuhle nokuhlangana. Kodwa-ke, isisombululo se-cellulose ether sizobonisa izici ze-Newtonian fluid lapho ukugxila kuphansi kakhulu futhi i-viscosity incane kakhulu. Lapho ukugxila kukhula, isixazululo siveza kancane kancane izici ze-pseudoplastic fluid, futhi lapho ukugxila kuphezulu, kusobala kakhulu i-pseudoplastic.