Tsis muaj viscosity HPMC: HPMC 400 yog tsuas yog siv rau tus kheej txoj kev sib khib, tab sis feem ntau txawv teb chaws.
Vim li cas: Lub viscosity yog tsawg, txawm tias cov dej tuav tsis zoo, tab sis theem yog qhov zoo, thiab lub cap densabrity yog siab.
Nruab nrab thiab qis viscosity:HydroxyPropyyl MethylcelluloseHPMC 20000-40000 yog siv rau vais nplaum, caulking tus neeg tshuaj khib, thermium rwb thaiv tsev cug cug, thiab lwm yam.
Vim li cas: kev ua haujlwm zoo, tsawg dua cov dej ntxiv, loj chot compactness.
1. Dab tsi yog lub hom phiaj tseem ceeb ntawm hydroxypropyl methylcelulose (HPMC)?
--A: HPMC tau siv dav hauv cov khoom siv hauv tsev, cov khoom siv hluavtaws, cov tshuaj, cov khoom noj, cov tshuaj ua liaj ua teb, luam yeeb thiab lwm yam kev lag luam. 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.
2. Muaj ob peb hom hydroxypropyl methylcellose (HPMC), thiab dab tsi yog qhov sib txawv hauv lawv cov kev siv?
- 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 thiab tsis muaj kev sib cav tiag. Tom qab txog 2 feeb, lub viscosity ntawm cov kua maj mam nce, sib sau ua pob tshab viscous colloid. Cov khoom kub-dissolving, thaum ntsib dej txias, tuaj yeem nrawm nrawm hauv dej kub, thiab ploj hauv dej kub. Thaum qhov kub thiab txias rau qhov kub thiab txias (peb lub tuam txhab cov khoom lag luam yog 65 degrees Celsius), maj mam viscosity maj mam tshwm sim kom txog thaum nws tsim lub pob tshab viscous colloid. 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.
3. Dab tsi yog cov kev sib cais ntawm hydroxypropyl methylcelulose (HPMC)?
- Aanswer: Dej kub xaus txoj kev: Txij li HPMC tsis yog yaj nyob rau hauv dej kub thiab tom qab ntawd ua kom sai thaum txias. Ob txoj hauv kev tau piav raws li nram qab no:
1) Muab cov dej kub uas yuav tsum muaj dej kub hauv lub thawv thiab cua sov nws txog 70 ° C. 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.
2), ntxiv 1/3 lossis 2/3 ntawm qhov yuav tsum tau dej rau hauv lub thawv, 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, vim tias muaj HPMC me ntsis hauv txhua Lub ces 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. ]
4. Yuav ua li cas thiaj li txiav txim siab qhov zoo ntawm hydroxyprropal methylcellose (HPMC) tsuas yog thiab intuitively?
- Guiteness: (1) whiteness: tsis tuaj yeem txiav txim siab seb puas yooj yim siv, thiab yog tias muaj zog ntxiv rau cov txheej txheem ntau lawm, nws yuav cuam tshuam nws cov kev zoo. Txawm li cas los xij, feem ntau ntawm cov khoom lag luam zoo muaj zoo dawb. (2) 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 fineness, qhov zoo dua. (3) Kev hloov pauv tau: Tso hydroxypropylulose (HPMC) nyob rau hauv dej los ua ib tug pob tshab Colloid, thiab xyuas nws cov kev hloov pauv. Qhov siab dua qhov kev hloov pauv, qhov zoo dua, qhia tias muaj cov tshuaj tsis muaj roj nyob hauv nws. Lub permeability ntawm txoj kev ntsug yog feem ntau zoo, tab sis nws tsis tuaj yeem hais tau zoo dua li tias ntawm cov kab rov tav reactor, thiab muaj ntau yam khoom siv ua tau zoo. (4) Qhov Loj Tshaj Plaws: Qhov loj dua qhov sib tsoo tshwj xeeb, qhov hnyav dua qhov zoo dua. Qhov tshwj xeeb nqus tau loj, feem ntau vim tias cov ntsiab lus hydroxypropyl hauv nws siab, thiab cov dej ua ke yog qhov zoo dua.
5. Tus nqi ntawm hydroxypropyl methylcellose (HPMC) hauv hmoov putty?
- Tus nqi HPMC siv nyob rau hauv cov ntawv thov tswv yim txawv nyob ntawm cov huab cua, qhov chaw ntawm cov hmoov txhuas tsis zoo thiab cov neeg siv khoom "zoo". Feem ntau hais lus, nws yog nruab nrab ntawm 4 kg thiab 5 kg. Piv txwv li, feem ntau ntawm cov hmoov putty hauv Beijing yog 5 kg; Feem ntau ntawm cov hmoov putty hauv Guizhou yog 5 kg nyob rau lub caij ntuj sov thiab 4.5 kg thaum lub caij ntuj no;
6. Dab tsi yog qhov tsim nyog viscosity ntawm hydroxypropyl methylulose (HPMC)?
- Luj tshuaj: Putty hmoov feem ntau yog feem ntau 100,000 yuan, thiab tshuaj khib yog xav tau ntau dua, thiab nws yooj yim los 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, lub viscosity yog siab dua, thiab 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.
7. Dab tsi yog cov ntsuas ntsuas tseem ceeb ntawm hydroxypropylropeny (HPMC)?
Aanswer: Hydroxypropropyl 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. Cov viscosity siab, kev siv dej siab, feem ntau (tsis yog abusute) zoo dua, thiab muaj viscosity siab, zoo dua siv hauv xis mas cug.
8. Dab tsi yog cov ntaub ntawv nyoos ntawm hydroxypropyl methylcelulose (HPMC)?
- A: Lub ntsiab raw cov ntaub ntawv raw ntawm hydroxypropylulose (HPMC): tshuaj raws muaj xws li flake alkali, acid, yog toluene, isopropanol, thiab lwm yam.
9. Lub luag haujlwm ntawm HPMC yog dab tsi hauv kev thov ntawm cov hmoov uas muaj zaub mov, thiab puas muaj kev siv tshuaj?
- HPMC muaj peb lub zog ntawm thickening, dej tuav thiab tsim kho hauv cov hmoov ua kom muaj hmoov. Thickening: cellulose tuaj yeem ua tuab rau ncua, ua kom cov kev daws teeb meem thiab xwm yeem, thiab tiv taus sagging. Dej khaws cia: Ua kom cov hmoov noj kom qhuav, thiab pab cov tshuaj tiv thaiv hmoov tshauv hauv qab dej. Kev tsim kho: Cellulose muaj cov nyhuv muaj lubricating nyhuv, uas tuaj yeem ua rau cov hmoov puty muaj cov haujlwm zoo. HPMC tsis koom nrog kev tshuaj tiv thaiv tshuaj thiab tsuas yog ua lub luag haujlwm ntawm lub luag haujlwm. Ntxiv cov dej rau cov hmoov putty thiab muab tso rau ntawm phab ntsa yog tshuaj lom neeg. Vim tias tsim ntawm cov tshuaj tshiab, nqa cov hmoov nplej rau ntawm phab ntsa tawm ntawm phab ntsa, zom nws mus rau hauv cov hmoov, thiab siv nws dua. Nws yuav tsis ua haujlwm, vim tias cov tshuaj tshiab (calcium carbonate) tau tsim. . Lub hauv paus tseem ceeb ntawm cov hmoov tshauv calcium hmoov yog: sib xyaw ntawm Ca (OHO (OH) 2 -CA (OH) 2 ↓ + H2O HEXH FOSCAS Hauv dej thiab huab cua nyob rau hauv kev txiav txim ntawm CO2, calcium carbonate yog tsim, thaum HPMC tsuas yog khaws cov tshuaj ntsuab zoo dua, thiab tsis koom nrog txhua yam kev siv tshuaj.
10. HPMC yog tsis-iona cellulose ether, yog li dab tsi tsis-ionic?
- Teb: Nyob rau hauv Layman cov lus, tsis yog cov tshuaj ntsuab yog cov tshuaj uas tsis ionize hauv dej. Ionization hais txog cov txheej txheem uas ib qho electrolyte rau hauv kev hloov pauv dawb uas txav mus los rau hauv cov kuab tshuaj tshwj xeeb (xws li dej, cawv). Piv txwv li, sodium chloride (NACL), cov ntsev noj nyob rau hauv dej thiab ionolves los tsim dawb sodium ions (na) uas yog qhov tsis zoo. Ntawd yog, thaum HPMC tau muab tso rau hauv dej, nws tsis muaj kev sib cais rau hauv kev them nyiaj, tab sis muaj nyob rau hauv daim ntawv ntawm lwg me me.
Lub Sijhawm Post: Oct-16-2022