Ukuqina komphumela we-cellulose ether

I-cellulose etherinika udaka olumanzi nge-viscosity enhle kakhulu, engakhuphula kakhulu amandla okubopha phakathi kodaka olumanzi kanye nongqimba oluyisisekelo, futhi ithuthukise ukusebenza kwe-anti-sag yodaka. Isetshenziswa kabanzi ekwenzeni udaka lokuplasta, uhlelo lokufakwa odongeni lwangaphandle kanye nodaka lokubopha ngezitini. Ukuqina komphumela we-cellulose ether nakho kungakhuphula i-homogeneity kanye nekhono lokulwa nokuhlakazeka kwezinto ezisanda kuxutshwa usimende, kuvimbele ukubola, ukuhlukaniswa kanye nokopha kodaka nokhonkolo, futhi kungasetshenziswa kukhonkolo yefayibha, ukhonkolo ongaphansi kwamanzi kanye nokhonkolo ozihlanganisayo. .

I-cellulose ether yandisa i-viscosity yezinto ezisekelwe kusimende kusukela ku-viscosity yesisombululo se-cellulose ether. Inkomba ye-"viscosity" ivame ukusetshenziselwa ukuhlola i-viscosity yesisombululo se-cellulose ether. I-viscosity ye-cellulose ether ngokuvamile ibhekisela kusixazululo se-cellulose ether esinokugxila okuthile (okufana no-2%). Isivinini (noma izinga lokuzungezisa, elifana no-20 rpm), inani le-viscosity elilinganiswa ngethuluzi lokulinganisa elicacisiwe (elifana ne-viscometer ejikelezayo).

I-Viscosity iyipharamitha ebalulekile yokuhlola ukusebenza kwe-cellulose ether. Ukuphakama kwe-viscosity yesisombululo se-cellulose ether, ngcono i-viscosity yezinto ezisekelwe kusimende, ngcono ukunamathela ku-substrate, futhi kunamandla okulwa nokucwiliswa kanye namandla okulwa nokuhlakazeka. Uma i-viscosity yayo iphezulu kakhulu, izoba nomthelela ekuguquguqukeni nasekusebenzeni kwezinto ezisekelwe kusimende (njengemimese yokunamathisela ngesikhathi sokwakha udaka). Ngakho-ke, i-viscosity ye-cellulose ether esetshenziswa odakeni oluxutshwe okomile ngokuvamile i-15,000 ~ 60,000 mPa. I-S-1, i-self-leveling mortar kanye nokhonkolo ozihlanganisayo, okudinga uketshezi oluphakeme, kudinga i-viscosity ephansi ye-cellulose ether.

Ngaphezu kwalokho, umphumela wokujiya we-cellulose ether wandisa isidingo samanzi sezinto ezisekelwe kusimende, ngaleyo ndlela andise isivuno sodaka.

I-viscosity yesisombululo se-cellulose ether incike kulezi zici ezilandelayo:

Isisindo samangqamuzana (noma idigri ye-polymerization) kanye nokuhlushwa kwe-cellulose ether, izinga lokushisa lesixazululo, izinga le-shear kanye nendlela yokuhlola.

1. Izinga eliphakeme le-polymerization ye-cellulose ether, isisindo samangqamuzana sikhulu, kanye nokukhuphuka kwe-viscosity yesisombululo sayo esinamanzi;

2. Uma uphakeme umthamo (noma ukugxila) kwe-cellulose ether, kulapho i-viscosity yesisombululo sayo esimanzi iphezulu, kodwa kufanele kuthathwe ukunakekelwa ukuze kukhethwe umthamo ofanele uma uyisebenzisa, ukuze ungaphazamisi ukusebenza kodaka nokhonkolo uma umthamo uphezulu kakhulu;

3. Njengoketshezi oluningi, i-viscosity yesisombululo se-cellulose ether izokwehla ngokunyuka kwezinga lokushisa, futhi ukuphakama kwe-cellulose ether, ithonya elikhulu lokushisa;

4. Isixazululo se-cellulose ether ngokuvamile siyi-pseudoplastic, enendawo yokunciphisa i-shear. Uma izinga le-shear likhulu ngesikhathi sokuhlolwa, i-viscosity iyancipha.

Ngakho-ke, ukuhlangana kodaka kuzoncishiswa ngenxa yamandla angaphandle, okuzuzisa ukwakhiwa kodaka, ukuze udaka lube nokusebenza okuhle nokuhlangana ngesikhathi esifanayo. Kodwa-ke, isixazululo se-cellulose ether sizobonisa izici ze-Newtonian fluid lapho ukugxila kuphansi kakhulu futhi i-viscosity incane. Lapho ukugxila kukhula, isixazululo sizobonisa kancane kancane izici ze-pseudoplastic fluid, futhi lapho ukugxila kuphezulu, kusobala kakhulu i-pseudoplasticity.