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I-Hydroxypropyl methylcellulose – udaka lokubumba Thuthukisa ukunamathela ebusweni bobumba, futhi uthuthukise ukugcinwa kwamanzi, ukuze amandla obumba athuthukiswe. Ukuthamba okuthuthukisiwe kanye nokuqina kwepulasitiki ukuze kuthuthukiswe izakhiwo zokusetshenziswa, ukusetshenziswa okulula konga isikhathi futhi kuthuthukise...Funda kabanzi»
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I-Cellulose hydroxypropyl methyl ether yenziwe nge-cotton cellulose emsulwa kakhulu ngokusebenzisa i-etherification ekhethekile ngaphansi kwezimo ze-alkaline. umphumela: 1. Imboni yokwakha: Njenge-ejenti yokugcina amanzi kanye ne-retarder ye-cement mortar, ingenza i-mortar ikwazi ukupompa. Ku-plaster, i-gypsum, i-putty powder noma...Funda kabanzi»
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1. Izinga lokushisa lejeli (isixazululo esingu-0.2%) 50-90°C. 2. Incibilika emanzini kanye nengxenye enkulu ye-polar c kanye nesilinganiso esifanele se-ethanol/amanzi, i-propanol/amanzi, i-dichloroethane, njll., ayincibiliki ku-ether, i-acetone, i-ethanol ephelele, futhi ivuvukale ibe yisisombululo se-colloidal esicacile noma esimanzi kancane emanzini abandayo. Amanzi ...Funda kabanzi»
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I-MC iyi-methyl cellulose, eyenziwe nge-cellulose ether ngokwelapha ukotini ocwengekile nge-alkali, kusetshenziswa i-methane chloride njenge-etherification agent, futhi idlula ochungechungeni lwezimpendulo. Ngokuvamile, izinga lokushintshana lingu-1.6~2.0, kanti ukuncibilika nakho kuhlukile ngamadigri ahlukene...Funda kabanzi»
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I-hydroxypropyl methylcellulose yamakhemikhali yansuku zonke iyi-polymer yokwenziwa eyenziwe ngama-linters ekotini e-cellulose yemvelo ngokuguqulwa kwe-etherification. I-Cellulose ether iyi-derivative ye-cellulose yemvelo. Ukukhiqizwa kwe-cellulose ether kuhlukile kuma-polymer okwenziwa. I-ma...Funda kabanzi»
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Ukwengeza i-hydroxypropyl methylcellulose ukwenza i-putty powder, i-viscosity yayo akulula ukuthi ibe nkulu kakhulu, inkulu kakhulu izobangela ukungasebenzi kahle, ngakho-ke i-hydroxypropyl methylcellulose idinga i-viscosity engakanani ye-putty powder? Ake siyihlaziye ukuze wonke umuntu ayithole. Kungcono ukwengeza i-hydroxypropyl methylc...Funda kabanzi»
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Ku-samente mortar kanye ne-gypsum-slurry, i-hydroxypropyl methylcellulose idlala indima yokugcina amanzi kanye nokuqina, futhi ingathuthukisa ngempumelelo ukunamathela kanye nokumelana nokuwa kwe-slurry. Izici ezifana nokushisa komoya, izinga lokushisa kanye nesivinini sokucindezela komoya kuzothinta i-volatili...Funda kabanzi»
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1. Izinkinga ezivamile ku-putty powder Ukomisa ngokushesha: Lokhu kungenxa kakhulu yenani le-lime calcium powder engeziwe (inkulu kakhulu, inani le-lime calcium powder esetshenziswa ku-putty formula lingancishiswa ngokufanele) lihlobene nesilinganiso sokugcina amanzi se-fiber, futhi lihlobene futhi nokuqina...Funda kabanzi»
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ukoma ngokushesha Lokhu kungenxa yokwengezwa ngokweqile kwempuphu ye-calcium yomlotha (inani lempuphu ye-calcium yomlotha esetshenziswa kufomula ye-putty lingancishiswa ngokufanele) kuhlobene nesilinganiso sokugcina amanzi se-hydroxypropyl methylcellulose, futhi kuhlobene nokoma kodonga. Ukuhlubula...Funda kabanzi»
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I-Hydroxypropyl methylcellulose iyi-non-ionic cellulose ether ecutshungulwa kusuka kukotini ocolisisiwe ngokusebenzisa uchungechunge lwezimo zamakhemikhali. Iyinto emhlophe engenaphunga, engenabuthi, ewumpuphu encibilika emanzini futhi iveze isixazululo se-colloidal esicacile noma esinamafu kancane. Inezici ze-t...Funda kabanzi»
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Igama lesiShayina le-HPMC yi-hydroxypropyl methylcellulose. Ayiyona i-ionic futhi ivame ukusetshenziswa njenge-ejenti yokugcina amanzi ku-mortar exutshwe okomile. Yinto evame ukusetshenziswa kakhulu yokugcina amanzi ku-mortar. Umkhiqizo we-ether osuselwa ku-polysaccharide okhiqizwa yi-alkalization kanye ne-etherification. Ayinawo...Funda kabanzi»
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1. Izinkinga ezivamile ku-putty powder eyomile ngokushesha Lokhu kuhlobene kakhulu nenani le-ash calcium powder engeziwe (inkulu kakhulu, inani le-ash calcium powder esetshenziswa ku-putty formula lingancishiswa ngokufanele) kanye nezinga lokugcina amanzi le-hydroxypropyl methylcellulose (HPMC), futhi iphinde isetshenziswe...Funda kabanzi»