Yiziphi izinto ezizothinta ukubonakala kwe-hydroxypropyllylyly methylcellulose?

Ukusetshenziswa kodaka olumanzi,hydroxypropyl methylcelluloseInezakhiwo ezinhle kakhulu zokuqina, zingakhulisa kakhulu ikhono lokubopha phakathi kodaka olumanzi kanye nongqimba lwesisekelo, futhi lungathuthukisa kabanzi ngodaka lwe-wortar, ngakho-ke lusetshenziselwa udaka lokufaka izikhonkwane.

Ngomphumela wokuqina we-cellulose ether, kungakhuphula futhi nekhono lokulwa nekhono lokulwa nokwenza usimende osusiwe kathusi, futhi kungavimba nezinkinga zokulingisa, ukuhlukaniswa nokopha ngodaka nokhonkolo. Ingasetshenziswa kukhonkolo oqiniswe ngokhonkolo, ukhonkolo ongaphansi kwamanzi kanye nokhonkolo ozihlanganisa.

IHydroxypropyllylylylyk ingangezela ukusebenza kwe-viscous kwezinto zokwenziwa kosimende. Lokhu kusebenza ikakhulukazi kuvela ngokubonakala kwe-purlulose ether perher solution. Ngokuvamile, inkomba yezinombolo ye-viscosity isetshenziselwa ukwahlulela i-viscosiose yekhambi le-ether, ngenkathi i-polillulose i-viscosity ye-ether isixazululo ikakhulukazi isixazululo se-cellulose ether ether, imvamisa, ngamazinga athile acacisiwe, njengama-degree angama-20 futhi isilinganiso sokujikeleza, usebenzisa ithuluzi lokulinganisa elicacisiwe, njenge-visecometer ejikelezayo. Inani le-viscosity.

I-Viscosity ingenye yamapharamitha abalulekile ukwahlulela ukusebenza kwe-cellulose ether. Ukuphakama kwe-viscoxprotity methylcellose solution, okungcono kakhulu kokubonakalayo kwezinto zokwenziwa kosimende, kanye nokusebenza okungcono kokusebenza kokusebenza kwe-substrate. Ngasikhathi sinye, inekhono lokulwa nokuhlanza kanye nekhono lokulwa nokuphambukiswa linamandla, kepha uma i-viscosity yayo iphakeme kakhulu, izothinta ukusebenza kokugeleza nokusebenza kwezinto zokwakha amasimende.

Yiziphi izinto ezizothinta ukubonakala kwe-hydroxypropyllylyly methylcellulose? Ikakhulukazi kuncike ngenxa yezizathu ezilandelayo.

1. Izinga eliphakeme kakhulu le-polymerization ye-cellulose ether ye-hydroxypropyllylylyllylylylylylylylylylylylylylylylylylylylyllose, incipha isisindo sayo samangqamuzana, okuholela ekubonakaleni okuphezulu kwesisombululo salo esinamanzi.

2. Uma inani noma ukugcwala kwe-cellulose ether liphakeme, kuzophakama isisombululo salo esinamanzi. Kodwa-ke, ukunakekelwa kufanele kuthathwe ukukhetha inani elifanele le-cellulose ether lapho kuyisebenzisa, ikakhulukazi ukugwema inani eliphakeme kakhulu le-cellulose ether. Kuzothinta ukusebenza kodaka nokhonkolo.

I-3. Njengokuqunjelwa okuningi, ukubonakala kwe-purnule ether perher solution kuzokwehla ngokwanda kokushisa, futhi kukhuphuka ukugcwala kwe-cellulose ether, okuphansi okushisa. Mphumela omkhulu.

4 Lapho kukhulu izinga lokufuya ngesikhathi sokuhlolwa, lincane ukubonwa.

Ukubumbana kodaka kuzoncishiswa ngenxa yesenzo samandla angaphandle, okuzuzisa ukwakhiwa okusolayo kodaka, okuholela ekubumbaneni okuhle nokusebenza kodaka ngasikhathi sinye. Kodwa-ke, umaI-Cellulose EtherIsixazululo sinokuhlushwa okuphezulu lapho i-viscosity iphansi futhi i-viscosity incane, izokhombisa izici zoketshezi lweNewtonian fluid. Lapho okuhlushwa kunyuka, ikhambi lizokhombisa kancane kancane izici ze-pseudoplastic fluid, futhi uma ukugxila kuphakeme, i-pseudoplasticity izocaca.