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Zaj duab xis Hydroxypropyl methylcellulose (HPMC) muaj kev ua tau zoo heev, tab sis vim HPMC yog cov thermal gel, qhov viscosity ntawm qhov kub qis qis dhau, uas tsis zoo rau kev txheej (lossis dipping) thiab ziab ntawm qhov kub qis dua los npaj zaj duab xis noj tau, ua rau kev ua haujlwm tsis zoo; hauv ...Nyeem ntxiv»
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Hauv kev sim thiab kev tsim cov tshuaj nifedipine uas tso tawm cov tshuaj ntsiav, cov tshuaj tiv thaiv kev xeeb tub, cov tshuaj ntsiav stomachicangning, cov tshuaj ntsiav ferrous fumarate, cov tshuaj ntsiav buflomedil hydrochloride, thiab lwm yam, peb siv cov kua hydroxypropyl methylcellulose (HPMC), Hydroxypropyl methylcellulose thiab polyacrylic acid resin...Nyeem ntxiv»
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Hydroxypropyl methylcellulose (HPMC) yog siv los ua ib qho ntawm cov tshuaj ntxiv loj tshaj plaws hauv tsev thiab txawv teb chaws. HPMC tuaj yeem siv los ua tus neeg sawv cev tsim zaj duab xis, nplaum, tso tawm tus neeg sawv cev, ncua tus neeg sawv cev, emulsifier, disintegrating tus neeg sawv cev, thiab lwm yam. Cov tshuaj ntxiv yog ib feem tseem ceeb ntawm p ...Nyeem ntxiv»
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Hais txog qhov teeb meem ntawm qhov kub ntawm Hydroxypropyl Methyl Cellulose HPMC, ntau tus neeg siv tsis tshua them sai sai rau qhov teeb meem ntawm qhov kub ntawm Hydroxypropyl Methyl Cellulose. Niaj hnub no, Hydroxypropyl Methyl Cellulose feem ntau yog qhov sib txawv raws li nws cov viscosity, tab sis rau Rau ...Nyeem ntxiv»
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1. Kev Faib Tawm: HPMC muaj peev xwm muab faib ua hom tam sim ntawd thiab hom kub-yaj. Cov khoom tam sim ntawd-hom tawg sai sai hauv dej txias thiab ploj mus rau hauv dej. Lub sijhawm no, cov kua tsis muaj viscosity, vim tias HPMC tsuas yog tawg hauv dej thiab tsis muaj kev yaj tiag tiag. Tom qab li 2 feeb, qhov ...Nyeem ntxiv»
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Hydroxypropyl methylcellulose (HPMC) yog cov cellulose ether uas tsis yog ionic ua los ntawm cov khoom siv polymer ntuj cellulose los ntawm ntau yam kev ua tshuaj lom neeg. Lawv yog cov hmoov dawb tsis muaj ntxhiab, tsis muaj saj thiab tsis muaj tshuaj lom uas swells hauv dej txias mus rau hauv cov kua colloidal meej lossis me ntsis fazy. Muaj cov pro...Nyeem ntxiv»
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Ua ntej, ntxuav sab nraub qaum ntawm cov vuas. Yog tias cov xim av, cov txheej uas ntab thiab cov hmoov tso tawm seem ntawm sab nraub qaum ntawm cov vuas tsis tau ntxuav, nws yooj yim rau kev sib sau ua ke thiab tsis ua tiav ib zaj duab xis tom qab siv cov nplaum. Kev ceeb toom tshwj xeeb, cov vuas uas tau ntxuav tsuas yog tuaj yeem pleev xim nrog cov nplaum tom qab lawv...Nyeem ntxiv»
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1. Cov ntsiab lus thiab qhov ntau thiab tsawg ntawm kev siv Txoj kev no qhia txog cov cuab yeej thiab cov kauj ruam ua haujlwm rau kev txiav txim siab qhov fluidity ntawm cov cement mortar. Txoj kev no siv tau rau kev txiav txim siab qhov fluidity ntawm cov mortar ntawm volcanic ash Portland cement, composite Portland cement, ordinary Portland c...Nyeem ntxiv»
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Sodium carboxymethyl cellulose (CMC) yog ib qho carboxymethylated derivative ntawm cellulose, tseem hu ua cellulose gum, thiab yog qhov tseem ceeb tshaj plaws ionic cellulose gum. CMC feem ntau yog ib qho anionic polymer compound tau los ntawm kev cuam tshuam cov cellulose ntuj nrog caustic alkali thiab monochloroacetic acid. Cov mol ...Nyeem ntxiv»
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Cov ntsiab lus tshauv yog ib qho cim qhia tseem ceeb ntawm hydroxypropyl methylcellulose. Ntau tus neeg siv khoom feem ntau nug thaum lawv nkag siab txog hydroxypropyl methylcellulose: tus nqi tshauv yog dab tsi? Hydroxypropyl methylcellulose nrog cov ntsiab lus tshauv me me txhais tau tias muaj kev huv siab dua; cellulose nrog cov ntsiab lus tshauv loj txhais tau tias...Nyeem ntxiv»
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Tus nqi pH dav dav ntawm cov khoom gypsum yog acidic lossis nruab nrab. Tam sim no muaj ob hom kev tsim kho qib hydroxypropyl methylcellulose hauv khw: cellulose qeeb-yaj thiab cellulose instant (S). Instant cellulose tsis haum rau cov kab ke gypsum. Cov khoom, qhov solubility tsis zoo heev ...Nyeem ntxiv»
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Qhov kev khaws dej ntawm Hydroxypropyl Methyl Cellulose yog ib qho ntawm cov khoom tseem ceeb ntawm Hydroxypropyl Methyl Cellulose. Cov yam ntxwv xws li qhov kub ntawm huab cua, qhov kub thiab qhov ceev ntawm cua yuav cuam tshuam rau qhov kev hloov pauv ntawm dej hauv cov cement mortar thiab cov khoom siv gypsum. Yog li ntawd, hauv...Nyeem ntxiv»