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Impuphu ye-polymer ephinde ihlakazeke iyi-powder dispersion ecutshungulwa ngokufuthwa kwe-polymer emulsion eguquliwe. Iyakwazi ukuhlakazeka kahle futhi ingaphinde ihlanganiswe ibe yi-polymer emulsion ezinzile ngemva kokufaka amanzi. Ukusebenza kufana ncamashi ne-emulsion yokuqala. Ngenxa yalokho, kungenzeka...Funda kabanzi»
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Imikhiqizo yempuphu ye-polymer ephinde ihlakazeke iyimpuphu ephinde ihlakazeke emanzini, ehlukaniswe ngama-ethylene/vinyl acetate copolymers, ama-vinyl acetate/tertiary ethylene carbonate copolymers, ama-acrylic copolymers, njll., ene-polyvinyl alcohol njenge-colloid evikelayo. Le mpuphu ingasuswa ngokushesha...Funda kabanzi»
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Kukhona i-monosodium glutamate yezimboni, i-carboxymethyl cellulose, i-hydroxypropyl methyl cellulose, kanye ne-hydroxyethyl cellulose, okuyizona ezisetshenziswa kakhulu. Phakathi kwezinhlobo ezintathu ze-cellulose, okunzima kakhulu ukuzihlukanisa yi-hydroxypropyl methylcellulose kanye ne-hydroxyethyl cellulose. Ake sihlukanise...Funda kabanzi»
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I-Hydroxypropyl methylcellulose ihlukaniswe izinhlobo ezimbili: uhlobo olujwayelekile lwe-hot-melt kanye nohlobo lwe-cold-water instant. I-Hydroxypropyl methylcellulose isebenzisa 1. Uchungechunge lwe-Gypsum Emikhiqizweni yochungechunge lwe-gypsum, ama-cellulose ethers asetshenziswa kakhulu ukugcina amanzi nokwandisa ubushelezi. Ndawonye anikeza impumuzo ethile....Funda kabanzi»
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I-Hydroxypropyl methylcellulose iyinto eluhlaza esetshenziswa kabanzi. Ikakhulukazi ekusetshenzisweni kwe-putty powder. Kunezakhiwo eziningi zomkhiqizo ezifana: ukumelana nosawoti, umsebenzi womphezulu, i-thermal gelation, ukuzinza kwe-PH, ukugcinwa kwamanzi, ukunamathela, njll. Kodwa-ke, i-hydroxypropyl methylcellulose nayo ithambekele...Funda kabanzi»
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Ukubukeka kanye nezakhiwo ze-HPMC: impuphu emhlophe noma engemhlophe ngokuphelele enemicu noma e-granular Ubuningi: 1.39 g/cm3 Ukuncibilika: cishe akuncibiliki ku-ethanol ephelele, i-ether, i-acetone; ukuvuvukala kube yisisombululo se-colloidal esicacile noma esinamafu kancane emanzini abandayo I-HPMC Ukuzinza: Okuqinile kuyavutha futhi akuhambelani...Funda kabanzi»
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Inkomba ye-viscosity ye-hydroxypropyl methylcellulose iyinkomba ebaluleke kakhulu. I-viscosity ayimeleli ubumsulwa. I-viscosity ye-cellulose HPMC incike enqubweni yokukhiqiza. Izindawo ezahlukene zokusebenzisa kufanele zikhethe i-cellulose HPMC ene-viscosities ehlukene, hhayi ephakeme kune-vi...Funda kabanzi»
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Uyini umehluko phakathi kwe-hydroxypropyl methylcellulose (HPMC) ene-S noma engenayo? 1. I-HPMC ihlukaniswe ngohlobo olusheshayo kanye nohlobo lokusabalala okusheshayo lwe-HPMC uhlobo lokusabalala okusheshayo lune-suffixed ngohlamvu S. Ngesikhathi senqubo yokukhiqiza, kufanele kufakwe i-glyoxal. Uhlobo olusheshayo lwe-HPMC alufaki noma iyiphi...Funda kabanzi»
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I-HPMC :HPMC 400 isetshenziswa kakhulu ekudakeni okuzilinganisa, kodwa ngokuvamile ingeniswa kwamanye amazwe. Isizathu: I-viscosity iphansi, yize ukugcinwa kwamanzi kuphansi, kodwa i-leveling ilungile, futhi ubuningi be-mortar buphezulu. I-viscosity ephakathi nephansi: hydroxypropyl methylcellulose HPMC 20000-40000 ...Funda kabanzi»
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Ukotini ocwengisiwe—ukuvula—ukwenza i-alkalizing—ukwenza i-ether ingasebenzi—ukwenza i-neutralizing—ukuhlukanisa—ukuwasha—ukuhlukanisa, ukomisa—ukugaya—ukupakisha—ukuvula ukotini okuqediwe: ukotini ocwengisiwe uyavulwa ukuze kususwe insimbi, bese ukugaya. Ukotini ocwengisiwe ocwengisiwe usesimweni sempuphu, futhi usayizi wezinhlayiya zawo ungama-mesh angu-80 ...Funda kabanzi»
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Kuhlelo lokuvikela udonga lwangaphandle, ngokuvamile luhlanganisa udaka lokubopha lwebhodi lokuvikela kanye nodaka lokuplasta oluvikela ubuso bebhodi lokuvikela. Udaka oluhle lokubopha ludinga ukuba lula ukuluxuba, lube lula ukulusebenzisa, lunganamatheli emmeseni, futhi lune-anti-roke enhle.Funda kabanzi»
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I-Hydroxypropyl methylcellulose iyinto eluhlaza evamile embonini yamakhemikhali ezinto zokwakha. Ekukhiqizweni kwansuku zonke, sivame ukuzwa igama layo. Kodwa abantu abaningi abazi ukuthi isetshenziswa kanjani. Namuhla, ngizochaza ukusetshenziswa kwe-hydroxypropyl methylcellulose ezindaweni ezahlukene. 1. Ukwakhiwa ...Funda kabanzi»