Xov xwm
-
Vim li cas cellulose ether yog siv dav hauv cov tshuaj excipients?
Pharmaceutical excipients yog excipients thiab additives siv nyob rau hauv kev tsim cov tshuaj thiab tshuaj, thiab yog ib feem tseem ceeb ntawm kev npaj tshuaj.Raws li ib tug natural polymer derived khoom, cellulose ether yog biodegradable, non-toxic, thiab pheej yig, xws li sodium carboxymethyl cellu ...Nyeem ntxiv -
Koj puas paub txog hydroxypropyl methylcellulose cog mos capsules thiab nws cov pob zeb colloid?
Tam sim no, cov ntaub ntawv nyoos ntawm cov tshuaj ntsiav tshuaj yog hydroxypropyl methylcellulose (HPMC) thiab rubulan, thiab hydroxypropyl starch kuj tseem siv los ua raw khoom.Txij li thaum pib xyoo 2010s, HPMC tau siv rau hauv Suav teb cog tshuaj ntsiav tshuaj kev lag luam, thiab raws li nws ...Nyeem ntxiv -
Koj puas paub qhov ua tau zoo ntawm hydroxypropyl methylcellulose?
Hydroxypropyl methylcellulose yog ib hom non-ionic cellulose tov ether.Tsis zoo li ionic methyl carboxymethyl cellulose sib xyaw ether, nws tsis hnov mob nrog cov hlau hnyav.Vim qhov sib txawv ntawm cov ntsiab lus methoxyl thiab hydroxypropyl cov ntsiab lus hauv hydroxypropyl methylcellulose thiab sib txawv viscos ...Nyeem ntxiv -
Cov ntxhiab tsw ntawm hydroxypropyl methylcellulose cuam tshuam li cas?
Dab tsi yog qhov cuam tshuam ntawm cov ntxhiab tsw loj ntawm hydroxypropyl methylcellulose: Synthesis ntawm hydroxypropyl methylcellulose: Kho cov paj rwb refined cellulose nrog lye ntawm 35-40 ° C rau ib nrab ib teev, nias, zuaj cov cellulose, thiab hnub nyoog kom zoo ntawm 35 ° C, kom lub Qhov nruab nrab degree ntawm polymerization ntawm tau txais ib ...Nyeem ntxiv -
Dab tsi yog cov txiaj ntsig ntawm kev siv hydroxypropyl methylcellulose ua cov tshuaj ntsiav hollow?
Cov khoom no yog 2-hydroxypropyl ether methyl cellulose, uas yog ib qho khoom siv hluavtaws.Nws tuaj yeem tsim los ntawm ob txoj hauv kev: (1) Tom qab kho cov paj rwb lossis cov ntaub ntoo ntoo nrog cov dej qab zib caustic, lawv tau tov nrog chloromethane thiab epoxy Propane reacts, refined thiab pulverized kom tau nws;(2)...Nyeem ntxiv -
Cov khoom siv cog qoob loo twg yog qhov tsim nyog rau kev tsim cov hollow hard capsules?
Nyob rau hauv keeb kwm ntawm ib puas xyoo ntawm cov tshuaj ntsiav, gelatin yeej ib txwm tuav nws txoj hauj lwm raws li cov khoom siv tshuaj ntsiav vim nws ntau qhov chaw, ruaj khov lub cev thiab tshuaj, thiab kev ua haujlwm zoo heev.Nrog kev nce ntawm cov neeg nyiam rau cov tshuaj ntsiav, hollo ...Nyeem ntxiv -
Hypromellose (HPMC) siv li cas hauv cov ntsiav tshuaj ntev-tso tawm matrix?
Hauv kev lag luam kws tshuaj, hypromellose (HPMC, METHOCEL ™) tuaj yeem siv los ua cov muab tub lim, binder, ntsiav tshuaj txheej polymer thiab tseem ceeb excipient los tswj cov tshuaj tso tawm.Hypromellose tau siv rau hauv cov ntsiav tshuaj rau ntau tshaj 60 xyoo thiab yog ib qho tseem ceeb excipient dav siv nyob rau hauv hydrophilic gel matrix ntsiav tshuaj.Muaj ntau p...Nyeem ntxiv -
Dab tsi yog daim ntawv thov ntawm hydroxypropyl methylcellulose ether hauv tshuab blasting mortar?
Kev tsim kho tshuab ntawm mortar tau sim thiab txhawb nqa ntau xyoo hauv Suav teb, tab sis tsis muaj kev vam meej ntau.Ntxiv nrog rau cov neeg tsis ntseeg txog cov kev hloov pauv hloov pauv uas kev tsim kho tshuab yuav coj mus rau kev tsim kho ib txwm muaj, qhov laj thawj tseem ceeb ...Nyeem ntxiv -
Cellulose ether cuam tshuam dab tsi rau cov khoom siv cement?
1. Thaum tshav kub kub hydration Raws li qhov tso tawm nkhaus ntawm lub tshav kub ntawm hydration dhau sij hawm, cov txheej txheem hydration ntawm cov cement feem ntau muab faib ua tsib theem, uas yog, lub sij hawm pib hydration (0 ~ 15min), lub sij hawm induction (15min ~ 4h) , acceleration thiab teem sij hawm (4h ~ 8h), deceleration ...Nyeem ntxiv -
Yuav ua li cas txog hydroxypropyl methylcellulose 400 viscosity li tus kheej-leveling mortar?
Self-leveling mortar yog cov khoom siv hmoov sib xyaw qhuav uas muaj ntau yam khoom xyaw, uas tuaj yeem siv tom qab sib tov nrog dej ntawm qhov chaw.Tom qab me ntsis kis nrog ib tug scraper, ib tug siab tiaj puag saum npoo yuav tau.Lub hardening ceev ceev, thiab koj tuaj yeem taug kev hauv 24 teev ...Nyeem ntxiv -
Koj puas nkag siab lub luag haujlwm tseem ceeb ntawm cellulose ether hauv cov khoom sib xyaw ua ke?
Hauv cov khoom sib xyaw ua ke, qhov sib ntxiv ntawm cellulose ether yog tsawg heev, tab sis nws tuaj yeem txhim kho kev ua haujlwm ntawm cov khib nyiab ntub, thiab nws yog ib qho tseem ceeb ntxiv uas cuam tshuam rau kev tsim kho ntawm mortar.Tsim nyog xaiv ntawm cellulose ethers ntawm ntau yam, txawv visc ...Nyeem ntxiv -
Dab tsi cuam tshuam rau qhov thickening ntawm cellulose ether?
Cov nyhuv thickening ntawm cellulose ether nyob ntawm: qib ntawm polymerization ntawm cellulose ether, kua concentration, shear npaum li cas, kub thiab lwm yam mob.Cov cuab yeej gelling ntawm cov tshuaj yog tshwj xeeb rau alkyl cellulose thiab nws cov derivatives hloov.Cov yam ntxwv ntawm gelation yog r...Nyeem ntxiv
