IHydroxypropyl methylcellulosenge-viscosity ye-100,000 ngokuvamile yanele ku-putty powder, kuyilapho udaka lunesidingo esiphezulu se-viscosity, ngakho-ke i-viscosity ye-150,000 kufanele ikhethwe ukuze isetshenziswe kangcono. Umsebenzi obaluleke kakhulu wei-hydroxypropyl methylcelluloseukugcinwa kwamanzi, okulandelwa ukujiya. Ngakho-ke, ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kufinyelelwa, i-viscosity ephansi nayo iyamukeleka. Ngokuvamile, ukuphakama kwe-viscosity, ukugcinwa kwamanzi kungcono, kodwa lapho i-viscosity idlula i-100,000, umthelela we-viscosity ekugcinweni kwamanzi awubalulekile.
IHydroxypropyl methylcelluloseNgokuvamile ihlukaniswe ngezigaba ezilandelayo ngokuya nge-viscosity:
1. I-viscosity ephansi: I-cellulose ye-viscosity engu-400, ikakhulukazi esetshenziselwa udaka lokuzilinganisa.
I-viscosity ephansi, i-fluidity enhle, ngemva kokwengeza izolawula ukugcinwa kwamanzi angaphezulu, ukugeleza kwamanzi akubonakali, ukuncipha kuncane, ukuqhekeka kuyancipha, futhi kungamelana ne-sedimentation, ukuthuthukisa uketshezi nokudonsa.
2. I-viscosity ephakathi nendawo: 20,000-50,000 i-viscosity cellulose, ikakhulukazi esetshenziselwa imikhiqizo ye-gypsum kanye nama-caulking agents.
I-viscosity ephansi, ukugcinwa kwamanzi, ukusebenza kahle kokwakhiwa, ukungezwa kwamanzi okuncane.
3. I-viscosity ephakathi: 75,000-100,000 i-viscosity cellulose, ikakhulukazi esetshenziselwa i-putty yangaphakathi nangaphandle yodonga.
I-viscosity emaphakathi, ukugcinwa kwamanzi okuhle, ukwakhiwa okuhle kanye nezakhiwo ezilengayo
4. I-viscosity ephezulu: 150,000-200,000, ikakhulukazi esetshenziselwa i-polystyrene izinhlayiyana zokufakwa kwe-glue powder kanye ne-vitrified micro-bead insulation mortar. I-viscosity ephezulu, ukugcinwa kwamanzi aphezulu, udaka akulula ukuwa, ukugeleza, ukuthuthukisa ukwakhiwa.
Ngokuvamile, ukuphakama kwe-viscosity, kungcono ukugcina amanzi. Ngakho-ke, amakhasimende amaningi azokhetha ukusebenzisa i-cellulose ye-medium-viscosity (75,000-100,000) esikhundleni se-cellulose ye-viscosity ephakathi nendawo (20,000-50,000) ukunciphisa inani elingeziwe futhi ngaleyo ndlela ulawule izindleko.
I-Hydroxypropyl methylcellulose (HPMC)iyi-polymer ye-semisynthetic evame ukusetshenziswa ezimbonini ezahlukahlukene, kufaka phakathi ezokwakha, ezemithi, kanye nokukhiqizwa kokudla. I-viscosity ye-HPMC iyimpahla ebalulekile enquma ukusebenza kwayo ezinhlelweni ezahlukene.
I-viscosity ye-HPMC ithonywa izinto ezifana nezinga lokushintshwa (DS), isisindo samangqamuzana, kanye nokugxila kwesixazululo se-HPMC. Ngokuvamile, njengoba izinga lokushintshwa kanye nesisindo samangqamuzana e-HPMC likhula, kanjalo ne-viscosity yayo.
I-HPMC itholakala ngebanga lamabanga e-viscosity, ngokuvamile elikalwa "ngesisindo samangqamuzana" noma "okuqukethwe kwe-methoxyl." I-viscosity ye-HPMC ingashintshwa ngokukhetha ibanga elifanele noma ngokulungisa ukugxila kwesixazululo se-HPMC.
Ezicelweni zokwakha, i-HPMC ene-viscosity ephezulu ivame ukusetshenziselwa ukuthuthukisa ukusebenza nokugcinwa kwamanzi ezintweni ezisekelwe kusimende. Kwezemithi, i-viscosity iyisici esibalulekile ekulawuleni izinga lokukhululwa kwezithako ezisebenzayo ekwakhiweni kwezidakamizwa.
Ngakho-ke, ukuqonda i-viscosity ye-hydroxypropyl methylcellulose kubalulekile ekukhetheni ibanga elifanele lezinhlelo zokusebenza ezithile kanye nokuqinisekisa izici zokusebenza ezifiselekayo.
Isikhathi sokuthumela: May-30-2024