1. HPMC tau muab faib ua cov hom khoom siv nrawm nrawm
HPMC nrawm dua nrog tsab ntawv S Suffix, cov txheej txheem ntau lawm, ntxiv kev kho glyoxal.
HPMC tam sim no tsis ntxiv ib tsab ntawv, xws li "100000" yog "100000 viscire vas dispersing HPMC".
2. Nrog lossis tsis muaj S, cov yam ntxwv sib txawv
Ceev ceev faj HPMC, hauv dej txias sai sai, vim tias HPMC tsis muaj viscosity, txog li ob feeb dhau los ua loj, sib sau pob tshab colloid.
Tam sim no HPMC, tuaj yeem nrawm dua hauv dej kub txog li 70 ℃, yuav tsum tau poob rau qee qhov kub thiab maj mam tshwm sim, kom txog thaum tsim ntawm pob tshab viscous colloid.
3. Nrog lossis tsis muaj S, sib txawv siv
Tam sim no HPMC tsuas yog siv tau hauv cov hmoov ua kom muaj hmoov thiab tshuaj khib nyiab, hauv cov kua nplaum ua kua thiab pleev xim, yuav muaj ib pab pawg tshwm sim, tsis tuaj yeem siv.
Ceev Fast Dispersive HPMC, kev thov ntau heev, hauv cov hmoov uas ua kom huv, ua kua nplaum, pleev xim, ntxuav cov khoom siv tau, tsis muaj kev ntxhua khaub ncaws,.
Cov Qauv Piav Qhia
1. Coj qhov uas yuav tsum tau ntawm dej kub thiab ua kom sov rau 80 ℃ lossis sab saud hauv lub thawv. Ntxiv cov khoom lag luam maj mam ua rau qeeb qeeb.
2, lossis tshav kub 1/3 lossis 2/3 ntawm cov dej kub kom ntau dua 85 ℃, tau txais cov dej txias, kom nplawm, txias qhov sib tov yog tsim.
3, Tus naj npawb ntawm cov morulose mesh, hauv cov hmoov sib xyaw yog ib qho me me, tom qab tsim cov viscosity.
4. Ntxiv cellulose maj mam thiab tusyees ntawm chav tsev kub, nplawm tsis tu ncua nyob rau hauv cov txheej txheem kom txog thaum muaj kev daws teeb meem.
Yam dab tsi cuam tshuam rau cov dej khaws cia ntawm hydroxyprropy kasthyl cellulose?
HydroxyPropyl methylcellose HPMC cov khoom lawv tus kheej kav dej yuav nquag cuam tshuam los ntawm cov hauv qab no yam:
1. HPMC homogeneity ntawm cellulose ether
HPMC ntawm kev sib txawv, methoxy, hydroxyprropoxt faib cov khoom sib faib, cov dej siab khaws cia.
2. Cellulose ether HPMC kub gel kub
Cov gel kub muaj qhov kub thiab txias thiab siab ua kom dej siab. Ntawm qhov tsis sib xws, dej rov qab tus nqi qis qis.
3. HPMC viscosity ntawm cellulose ether
Thaum lub viscos ntawm HPMC nce, cov dej khaws nyiaj khaws cia kuj nce. Thaum lub viscosity mus txog ib qho degree, qhov nce ntawm dej khaws cia tus nqi ua kom tiaj tus.
Tus nqi ntawm cellulose ether HPMC ntxiv
Qhov ntau dua tus nqi ntawm cellulose ether HPMC ntxiv, ntau dua cov dej khaws cia, qhov zoo dua cov txiaj ntsig khaws cia.
Nyob rau hauv cov thaj tsam ntawm 0.25-0.6%, dej tswj kav dej nce nrawm nrog kev nce ntxiv ntawm tus nqi ntxiv. Kev nce zuj zus ntawm cov dej khaws cov nqi sib npaug qeeb qeeb thaum tus nqi ntxiv tau nce ntxiv.
Lub Sijhawm Post: Feb-20-2025