1. Muaj ob peb hom hydroxypropyl methylcellulose hpmc, thiab dab tsi yog qhov sib txawv ntawm lawv cov kev siv?
Teb: HydroxyPropyyl methylcellose HPMC tuaj yeem muab faib ua cov hom hom tseem ceeb thiab kub. Instant-hom khoom tawg tawm sai sai hauv dej txias thiab ploj mus rau hauv dej. Nyob rau lub sijhawm no, cov kua tsis muaj viscosity, vim HPMC tsuas yog dispersed hauv dej, tsis muaj yaj tiag tiag. Tom qab txog 2 feeb, lub viscosity ntawm cov kua maj mam nce, sib sau ua pob tshab viscous colloid. Kub-distrolving cov khoom, thaum ntsib dej txias, tuaj yeem tawg sai nyob rau hauv dej kub thiab ploj hauv dej kub. Thaum qhov kub thiab txias rau qhov kub thiab txias, maj mam pom maj mam tshwm sim kom txog thaum lub pob tshab viscous colloid yog tsim. Qhov kub-melt hom tsuas yog siv rau hauv cov hmoov ua kom muaj hmoov thiab tshuaj khib. Hauv cov kua nplaum kua thiab pleev xim, clumping promomenon yuav tshwm sim thiab tsis tuaj yeem siv. Cov hom tseem ceeb muaj cov kev siv dav dav. Nws tuaj yeem siv tau hauv cov hmoov ua kom muaj hmoov thiab tshuaj khib, nrog rau hauv cov kua nplaum ua kua thiab pleev xim, tsis muaj cov contraindications.
2. Dab tsi yog lub hom phiaj tseem ceeb ntawm hydroxypropyl methylcellose (HPMC)?
A: HPMC tau siv dav hauv cov khoom siv hauv tsev, cov khoom siv hluavtaws, cov tshuaj, ua zaub mov, ua liaj ua teb, tshuaj pleev ib ce, luam yeeb. HPMC tuaj yeem faib ua: Qib Kev Tsim Kho Qib, Khoom Noj Qib Qib thiab Tshuaj Khoom raws li lub hom phiaj. Tam sim no, feem ntau ntawm cov khoom lag luam yog cov qib kev tsim kho. Nyob rau qib kev tsim kho, tus nqi ntawm cov hmoov putty yog qhov loj heev, txog 90% yog siv rau cov hmoov putty, thiab tus so yog siv rau cug cug thiab kua nplaum.
3. Dab tsi yog cov txheej txheem dissolving ntawm hydroxypropyl methylcellose HPMC?
Teb: Dej kub xaus txoj kev: Txij li HPMC tsis yog yaj hauv dej kub, HPMC tuaj yeem sib xyaw ua ke hauv dej kub, thiab tom qab ntawd ua kom sai thaum txias. Ob txoj hauv kev tau piav raws li nram qab no:
1), ntxiv 1/3 lossis 2/3 ntawm qhov uas yuav tsum tau dej hauv lub ntim, thiab ua kom sov rau ntawm lub sijhawm 1), Disperse HPMC, npaj cov dej ntws qeeb; Tom qab ntawd ntxiv cov dej txias rau dej txias rau cov dej kub hauv cov slurry, cov sib tov tau txias tom qab nplawm.
Hmoov sib xyaw txoj kev: Sib tov HPMC hmoov nrog cov khoom loj ntawm lwm cov hmoov av, thiab tom qab ntawd HPMC tuaj yeem yaj ua ke, thiab tom qab ntawd tsuas yog HPMC me ntsis hauv txhua lub kaum me me. Cov hmoov yuav yaj tawm tam sim ntawd hauv kev sib cuag nrog dej. - Lub hau kev yog siv los ntawm kev siv hmoov thiab tshuaj cug tuam ntxhab. [Hydroxypropyl methylcellose (HPMC) yog siv los ua cov thickener thiab dej-khaws cov neeg sawv cev hauv ncoo hmoov.
2), muab cov dej uas yuav tsum muaj dej kub hauv lub ntim, thiab ua kom sov li 70 ℃. Lub HydroxyPropyf methylcellulose tau maj mam ntxiv nrog qeeb stirring, thiab tom qab ntawd maj mam tsim ib qho slurry, uas tau txias nrog nplawm.
4. Yuav ua li cas thiaj li txiav txim siab qhov zoo ntawm hydroxyprropal methylcellose (HPMC) tsuas yog thiab intuitively?
Teb: (1) Tshwj xeeb lub ntiajteb txawj nqus: qhov loj dua qhov kev nqus tshwj xeeb, qhov hnyav dua qhov zoo dua. loj dua, feem ntau vim
(2) whiteness: txawm tias dawb tsis txiav txim siab seb puas siv tau yooj yim, thiab yog tias muaj kev ntxuav hniav dawb, nws yuav cuam tshuam nws cov kev zoo. Txawm li cas los xij, feem ntau ntawm cov khoom lag luam zoo muaj zoo dawb.
(3) Fineness: lub txiaj ntsig ntawm HPMC feem ntau yog 80 mesh thiab 100 mesh, thiab 120 mesh tsawg dua. Feem ntau ntawm HPMC tsim hauv Hebei yog 80 mesh. Tus finer lub txiaj ntsig, qhov zoo dua feem ntau.
(4) Kev Hloov Chaw) Tso rau HydroxyPropyf methylcellose (HPMC) nyob rau hauv dej los ua ib tug pob tshab Colloid, thiab xyuas nws cov kev hloov pauv. Qhov siab dua cov kev hloov pauv, qhov zoo dua, qhia tias muaj cov tshuaj tsis muaj insoluble hauv. Lub permeability ntawm cov neeg ntsug ntawm cov reactors feem ntau yog qhov zoo, tab sis nws tsis tuaj yeem hais tau zoo dua li tias ntawm kab rov tav uas txiav txim siab cov khoom lag luam zoo. Cov ntsiab lus hydroxypropyl hauv nws yog siab, thiab hydroxypropyl cov ntsiab lus yog qhov siab, cov dej khaws cia zoo dua.
5. Dab tsi yog cov ntsuas ntsuas tseem ceeb ntawm hydroxypropyl metthylculose (HPMC)?
Teb: Hydroxyproprotsl cov ntsiab lus thiab viscosity, feem ntau cov neeg siv kev saib xyuas txog ob qhov ntsuas no. Lub siab dua cov ntsiab lus hydroxypropyl, qhov zoo dua cov dej khaws cia. Viscous, dej-tuav, kuj yog (hloov
6. Dab tsi yog qhov tsim nyog viscosity ntawm hydroxypropyl methylulose (HPMC)?
Teb: putty hmoov feem ntau yog 100,000 yuan, thiab tshuaj khib yog xav tau ntau dua, thiab nws yooj yim siv ntawm 150,000 Yuan. Ntxiv mus, lub luag haujlwm tseem ceeb tshaj plaws ntawm HPMC yog los khaws dej, ua raws li thickening. Hauv cov hmoov putty, tsuav li lub taub dej ceev yog qhov zoo thiab lub viscosity yog qis dua (70,000-80,000), nws tseem ua tau. Ntawm chav kawm, yog tias viscosity siab dua, cov txheeb ze cov dej rov qab yog qhov zoo dua. Thaum lub viscosity tshaj 100,000, cov txiaj ntsig ntawm viscosity ntawm dej khaws cia tsis ntau. Kiag li) kuj tseem zoo dua, thiab cov viscosity yog siab, thiab nws yog qhov zoo dua rau kev siv hauv cov xis.
7. Dab tsi yog cov ntaub ntawv nyoos ntawm hydroxypropyl methylcelulose (HPMC)?
Teb: Lub ntsiab raw cov ntaub ntawv raw ntawm hydroxypropylulose (hpmc): tshuaj raws muaj xws li flake alkali, acid, yog tolreene, isopropanol, thiab lwm yam.
Lub Sijhawm Post: Feb-20-2025