Yiziphi izici ezizothinta i-viscosity ye-hydroxypropyl methylcellulose?

Ukuze kusetshenziswe udaka olumanzi, i-hydroxypropyl methylcellulose inezici ezinhle zokuqina, ingakhuphula ngokuphawulekayo ikhono lokubopha phakathi kodaka olumanzi kanye nongqimba oluyisisekelo, futhi ingathuthukisa ukusebenza kwe-anti-sag yodaka, ngakho-ke isetshenziswa kabanzi ekufakeni i-Mortar, yangaphandle. uhlelo lokuvikela udonga kanye nodaka lokubopha ngezitini.

Ngomphumela wokujiya we-cellulose ether, ingaphinda ikhulise i-homogeneity kanye nekhono lokulwa nokuhlakazeka kwezinto ezisanda kuxutshwa esekwe usimende, futhi ingavimbela izinkinga zokuhlukaniswa, ukuhlukaniswa nokopha odakeni nokhonkolo. Ingasetshenziswa ku-Fiber-reinforced concrete, ukhonkolo ongaphansi kwamanzi kanye nokhonkolo ozihlanganisayo.

IHydroxypropyl methylcellulose ingakhuphula ukusebenza kwe-viscous yezinto ezisekelwe kusimende. Lokhu kusebenza ikakhulukazi kuvela ku-viscosity yesisombululo se-cellulose ether. Ngokuvamile, inkomba yezinombolo ye-viscosity isetshenziselwa ukwahlulela i-viscosity yesisombululo se-cellulose ether, kuyilapho i-cellulose I-viscosity ye-ether ngokuvamile ibhekisela ekuhlanganiseni okuthile kwesisombululo se-cellulose ether, ngokuvamile u-2%, ekushiseni okucacisiwe, njengama-degree angu-20 kanye isilinganiso sokuzungezisa, kusetshenziswa ithuluzi lokulinganisa elicacisiwe, njenge-viscometer ejikelezayo. Inani le-viscosity.

I-viscosity ingenye yemingcele ebalulekile yokuhlola ukusebenza kwe-cellulose ether. Ukuphakama kwe-viscosity yesisombululo se-hydroxypropyl methylcellulose, kuba ngcono i-viscosity yezinto ezisekelwe kusimende, kanye nokusebenza kangcono kokunamathela ku-substrate. Ngesikhathi esifanayo, inekhono lokulwa nokugoqa kanye nekhono lokulwa nokuhlakazeka kunamandla, kodwa uma i-viscosity yayo iphezulu kakhulu, izothinta ukusebenza kokugeleza nokusebenza kwezinto ezisekelwe kusimende.

Yiziphi izici ezizothinta i-viscosity ye-hydroxypropyl methylcellulose? Ikakhulukazi kuya ngezizathu ezilandelayo.

1. Izinga eliphakeme le-polymerization ye-cellulose ether ye-hydroxypropyl methylcellulose, isisindo sayo samangqamuzana sikhulu, okuholela ekubonakaleni okuphezulu kwesisombululo sayo esinamanzi.

2. Uma inani noma ukuhlushwa kwe-cellulose ether kungaphezulu, i-viscosity yesisombululo sayo esinamanzi izoba phezulu. Nokho, kufanele kuqashelwe ukukhetha inani elifanele le-cellulose ether uma uyisebenzisa, ikakhulukazi ukuze kugwenywe inani eliphezulu kakhulu le-cellulose ether. Kuzothinta ukusebenza kodaka nokhonkolo.

3. Njengoketshezi oluningi, i-viscosity yesisombululo se-cellulose ether izokwehla ngokunyuka kwezinga lokushisa, futhi ukuphakama kwe-cellulose ether, izinga lokushisa liphansi. Umthelela omkhulu.

4. Isixazululo se-cellulose ether ngokuvamile siyi-pseudoplastic, enezici zokunciphisa i-shear. Isilinganiso sokugunda kakhulu ngesikhathi sokuhlolwa, sincane i-viscosity.

Ukubumbana kodaka kuzoncishiswa ngenxa yesenzo samandla angaphandle, okubuye kube usizo ekwakhiweni kokukhuhla udaka, okuholela ekubambeni okuhle nokusebenza kodaka ngesikhathi esifanayo. Kodwa-ke, uma isisombululo se-cellulose ether sinokugxila okuphezulu Lapho i-viscosity iphansi futhi i-viscosity incane, izobonisa izici ze-Newtonian fluid. Lapho ukuhlushwa kukhula, isisombululo sizobonisa kancane kancane izici ze-pseudoplastic fluid, futhi uma ukugxila kuphezulu, i-pseudoplasticity izoba sobala kakhulu.