Npaj HydroxyPropyyl methylcellulose (HPMC) Txheej daws yog qhov kev daws teeb meem tseem ceeb hauv kev lag luam thiab khoom noj khoom haus. HPMC yog ib feem siv polymer nyob rau hauv cov txheej txheem ua qauv vim nws cov yeeb yaj kiab zoo tshaj plaws, kev ruaj khov, thiab sib xyaw nrog ntau yam khoom xyaw nquag. Tej cov kev daws teeb meem yog siv los cuam tshuam cov khaubncaws sab nraud povtseg, tswj kev tawm tswv yim thiab kev nthuav dav ntawm cov ntsiav tshuaj, tsiav tshuaj, thiab lwm yam khoom noj.
1. Cov Ntaub Ntawv Yuav Tsum Tau:
HydroxyPropyyl methylcellulose (HPMC)
Kuab (feem ntau yog dej lossis sib xyaw ntawm cov dej thiab dej cawv)
Planizer (Yeem, los txhim kho cov khoom siv yooj yim ntawm zaj duab xis)
Lwm yam kev sib ntxiv (xaiv tau, zoo li cov coungants, opacifiers, lossis anti-tacking tus sawv cev)
2. Cov Khoom Siv Yuav Tsum Tau:
Sib tov hlab lossis thawv
Stirrer (tshuab lossis sib nqus)
Uas Sib Tw
Tau qhov twg los sov (yog tias yuav tsum tau)
Sab cib (yog tias tsim nyog kom tshem cov lumps)
Phos me me (yog tias PHEM kev hloov kho yog qhov tsim nyog)
Kev nyab xeeb iav (hnab looj tes, goggles, lab lub tsho tiv no)
3. Cov txheej txheem:
Kauj ruam 1: Kev hnyav cov khoom xyaw
Ntsuas qhov uas yuav tsum muaj tsawg ntawm HPMC siv qhov hnyav sib npaug. Tus nqi yuav sib txawv raws li qhov xav tau ntawm cov kev daws teeb meem thiab qhov loj me ntawm cov pob.
Yog tias siv lub tshuab yas lossis lwm yam ntxiv, ntsuas cov khoom uas xav tau ib yam nkaus.
Kauj ruam 2: Kev npaj ntawm cov kuab tshuaj
Txiav txim siab hom kuab tshuaj los siv raws li daim ntawv thov thiab sib xyaw nrog cov khoom xyaw nquag.
Yog tias siv dej ua cov kuab tshuaj, kom nws muaj kev coj dawb huv thiab nyiam dua tshiab.
Yog tias siv cov dej sib xyaw thiab dej cawv, txiav txim siab cov piv txwv tsim nyog raws li cov solubility ntawm HPMC thiab cov yam ntxwv xav tau ntawm cov kev daws teeb meem.
Kauj ruam 3: Sib xyaw
Tso lub nkoj sib xyaw ntawm lubirrer thiab ntxiv cov kuab tshuaj.
Pib nplawm cov kuab tshuaj ntawm qhov nrawm nrawm.
Maj mam ntxiv qhov ua ntej hnyav HPMC hmoov rau hauv lub plab nplawm kom tsis txhob muaj clumping.
Txuas ntxiv nplawm kom txog thaum HPMC hmoov yog dispersed uniformly nyob rau hauv cov kuab tshuaj. Cov txheej txheem no yuav siv qee lub sijhawm, nyob ntawm cov concentration ntawm HPMC thiab kev ua tau zoo ntawm cov khoom siv stirring.
Kauj ruam 4: Cov cua kub (yog tias yuav tsum tau)
Yog tias HPMC tsis yaj kiag li ntawm chav tsev kub, huab cua sov yuav tsim nyog.
Ua kom sov qhov sib tov thaum nplawm kom txog thaum HPMC yog yaj tag. Ceev faj kom tsis txhob overheat, li ntau dhau yuav txwv HPMC lossis lwm yam ntawm kev daws teeb meem.
Kauj Ruam 5: Ntxiv ntawm cov yas thiab lwm yam ntxiv (yog tias muaj)
Yog tias siv lub tshuab yas, ntxiv nws rau kev daws maj thaum hliav.
Ib yam li ntawd, ntxiv lwm yam kev xav tau ntxiv xws li cov duab lossis opacifiers nyob rau theem no.
Kauj Ruam 6: PH Haum (yog tias tsim nyog)
Txheeb xyuas cov ph txog cov txheej daws tau siv lub ntsuas ntev.
Yog tias cov pH yog tawm ntawm cov khoom seem rau kev ruaj ntseg lossis sib xyaw, kho nws, kho nws los ntawm kev ntxiv cov tshuaj me me lossis cov kev daws teeb meem yooj yim.
Do cov kev daws teeb meem kom huv si tom qab txhua qhov ntxiv thiab recheck lub v kom txog thaum qib xav tau tiav.
Kauj Ruam 7: Kev Sib xyaw Thaum Kawg thiab Kev Ntsuas
Thaum tag nrho cov khoom sib xyaw ntxiv thiab muab sib xyaw kom huv, txuas ntxiv nplawm rau ob peb feeb ntxiv kom ua kom paub tseeb homogeneity.
Ua tej yam kev ntsuas tsim nyog xws li ntsuas ntsuas lossis ntsuas kev tshuaj xyuas lossis kuaj pom rau tej yam xwm txheej ntawm cov teeb meem lossis theem sib cais.
Yog tias xav tau, dhau qhov kev daws teeb meem los ntawm ib sab cib kom tshem tawm cov lumns uas seem los yog tsis muaj kev cuam tshuam.
Kauj Ruam 8: Cia thiab Ntim
Hloov cov npaj npaj HPMC rau hauv cov thawv ntim khoom tsim nyog, nyiam dua cov khoom siv yas ua kom zoo lossis cov khoom siv yas zoo.
Sau npe nrog cov ntaub ntawv tsim nyog xws li tus lej ntawm kev npaj, kev npaj, siab, thiab cov chaw cia khoom.
Khaws cov tshuaj hauv qhov chaw txias, qhuav, qhov chaw qhuav tiv thaiv los ntawm lub teeb thiab noo noo los tswj nws lub neej ruaj khov thiab lub txee.
4. Cov lus qhia thiab saib xyuas:
Nco ntsoov ua raws li kev kuaj cov haujlwm zoo thiab cov lus qhia kev nyab xeeb thaum tuav tshuaj thiab khoom siv.
Tswj kev nyiam huv thiab muaj menyuam muaj menyuam kom tsis txhob muaj paug.
Ntsuam xyuas qhov sib xyaw ntawm cov kev daws teeb meem nrog rau cov phiaj xwm substrate (ntsiav tshuaj, tsiav tshuaj) ua ntej daim ntawv thov loj.
Ua kev kawm kev coj ua tau zoo los ntsuas qhov kev ua tau ntev ntev thiab kev cia khoom ntawm cov txheej txheej.
Sau cov txheej txheem npaj tau npaj thiab khaws cov ntaub ntawv rau cov hom phiaj tswj thiab kev tswj hwm kev ua raws.
Lub Sijhawm Post: Mar-07-2024