Dilution ntawm HPMC (HydroxyPropyyl methylulose) feem ntau yog kho nws cov kev xav tau kom haum rau cov kev thov sib txawv. HPMC yog dej-soluble polymer compound dav siv nyob rau hauv cov tshuaj, kev tsim kho, khoom noj thiab kev lag luam kom zoo nkauj.
(1) Npaj
Xaiv lub npe HPMC ntau yam:
HPMC muaj cov vencosities sib txawv thiab kev lom zem. Xaiv txoj cai ntau yam muaj peev xwm xyuas tau tias cov tshuaj diluted raws li cov cai yuav tsum tau ua.
Npaj cov cuab yeej thiab cov ntaub ntawv:
HPMC Hmoov
Distilled dej los yog dej deionized
Sib Nqus Stirrer lossis Phau Ntawv Stirrer
Ntsuas cov cuab yeej xws li ntsuas cov kheej kheej thiab khob khob
Tsim nyog ntim, xws li cov iav fwj lossis hwj yas.
(2) Cov kua ntso ua haujlwm
Uas HPMC Hmoov:
Raws li kev xav kom tau diluted, qhov hnyav qhov yuav tsum tau muaj ntawm HPMC hmoov. Feem ntau, chav ntsuas ntawm cov siab yog qhov hnyav feem pua (w / w%), xws li 1%, 2%, thiab lwm yam.
Ntxiv Dej:
Ncuav ib tus nqi tsim nyog ntawm distilled lossis deionized dej rau hauv lub thawv. Cov dej yuav tsum tau txiav txim siab raws li txoj kev xav ntawm kev daws qhov kawg.
Ntxiv HPMC Hmoov:
Ntxiv lub luj Nyuaj HPMC hmoov tusyees rau hauv dej.
Stirring thiab dissolving:
Siv lub sib nqus stirrer los yog ib txhais tes nplawm kom do txoj kev daws teeb meem. Cloksring tuaj yeem pab HPMC hmoov yaj nrawm dua thiab muaj tusyees. Lub plhaw nrawm thiab lub sijhawm yuav tsum tau hloov kho raws li hom thiab concentration HPMC. Feem ntau, cov lus pom zoo txhawb tau yog 30 feeb txog ob peb teev.
Sawv thiab degassing:
Tom qab nplawm, cia cov tshuaj sawv rau ib lub sijhawm, feem ntau 1 teev mus rau 24 teev. Qhov no tso cai rau cov npuas hauv kev daws teeb meem kom sawv thiab ploj, ua kom muaj kev sib txawv ntawm kev daws teeb meem.
(3) Kev tiv thaiv ceev faj
Stirring ceev thiab lub sijhawm:
Qhov ceev thiab stirring lub sij hawm ntawm HPMC sib cais cuam tshuam los ntawm nws viscosity thiab dej kub. Feem ntau hais lus, siab viscosity HPMC yuav tsum muaj sijhawm.
Dej kub:
Siv dej sov (xws li 40 ° C-60 ° C) ° C) tuaj yeem nrawm tsis txhob siv qhov kub dhau ib zaug kom tsis txhob cuam tshuam cov khoom ntawm HPMC.
Tiv thaiv agglomeration:
Thaum ntxiv HPMC hmoov, sim kom tsis txhob agglomeration. Koj tuaj yeem ua ntej sib xyaw HPMC hmoov nrog ib qho me me ntawm cov dej mus rau hauv slurry, thiab tom qab ntawd maj mam ntxiv nws mus rau cov dej seem kom txo agglomeration.
Cia:
Kev daws teeb meem HPMC yuav tsum muab cia rau hauv cov thawv huv, kaw kom tsis txhob muaj cov dej noo lossis paug. Kev khaws cia yuav tsum tau hloov kho raws li kev siv thiab ib puag ncig cov xwm txheej ntawm HPMC.
Kev Nyab Xeeb:
Thaum lub sijhawm ua haujlwm, tsim nyog cov cuab yeej siv hnab looj tes xws li hnab looj tes thiab lub ntsej muag yuav tsum tau hnav kom tsis txhob muaj kev sib cuag HPMC thiab muaj kev daws teeb meem.
Los ntawm cov kauj ruam saum toj no, koj tuaj yeem dilute HPMC raws li xav tau kom ntseeg tau tias nws cov hauj lwm zoo thiab ruaj khov nyob rau hauv cov ntawv thov sib txawv. Txhua daim ntawv thov kev pab cuam yuav muaj sib txawv, yog li nws yog ib qho tseem ceeb kom nkag siab thiab ua raws li cov qauv kev ua haujlwm tshwj xeeb thiab cov cai.
Lub Sijhawm Post: Feb-17-2025