Kev npaj cov tshuaj methylcellulose suav nrog ntau cov kauj ruam thiab kev txiav txim siab, suav nrog kev xaiv cov qib tsim nyog ntawm methylcellulose, txiav txim siab qhov xav tau concentration, thiab ua kom muaj kev sib cais kom raug.Methylcellulose yog cov khoom siv ntau yam siv dav hauv ntau yam lag luam, suav nrog tshuaj, khoom noj, thiab tshuaj pleev ib ce, vim nws cov thickening, gelling, thiab stabilizing zog.
1. Xaiv Qib Methylcellulose:
Methylcellulose muaj nyob rau hauv ntau qib, txhua qhov sib txawv viscosity thiab gelation zog.Kev xaiv qib yog nyob ntawm daim ntawv thov npaj thiab cov yam ntxwv xav tau ntawm cov khoom kawg.Cov qib nrog cov viscosity siab dua feem ntau yog siv rau cov ntawv thov uas xav tau cov kev daws teeb meem tuab dua lossis cov gels, thaum cov qib viscosity qis dua yog tsim rau cov kua dej ntau dua.
2. Kev Txiav Txim Siab Xav Tau:
Qhov concentration ntawm cov tshuaj methylcellulose yuav nyob ntawm seb cov kev cai tshwj xeeb ntawm koj daim ntawv thov.Cov concentrations siab dua yuav ua rau cov tshuaj tuab dua lossis cov gels, thaum cov concentrations qis dua yuav ua kua dej ntau dua.Nws yog ib qho tseem ceeb los txiav txim siab qhov zoo tshaj plaws concentration raws li kev npaj siv, xav txog yam xws li viscosity, stability, thiab compatibility nrog lwm cov khoom xyaw.
3. Cov khoom siv thiab cov khoom siv:
Ua ntej pib txheej txheem npaj, sau tag nrho cov khoom siv thiab cov khoom tsim nyog:
Methylcellulose hmoov
Distilled dej los yog lwm yam kuab tshuaj uas tsim nyog
Cov khoom siv stirring (piv txwv li, magnetic stirrer lossis mechanical stirrer)
Kawm tiav lub tog raj kheej lossis ntsuas khob
Beakers los yog ntim rau kev sib tov
Thermometer (yog tias xav tau)
pH meter los yog pH qhia strips (yog tias xav tau)
4. Cov txheej txheem npaj:
Ua raws li cov kauj ruam no los npaj cov tshuaj methylcellulose:
Kauj Ruam 1: Ntsuas cov Methylcellulose Hmoov
Siv lub ntsuas digital, ntsuas qhov tsim nyog ntawm methylcellulose hmoov raws li qhov xav tau concentration.Nws yog ib qho tseem ceeb los ntsuas cov hmoov kom raug kom ua tiav qhov xav tau viscosity thiab sib xws ntawm cov tshuaj kawg.
Kauj ruam 2: Ntxiv cov kuab tshuaj
Muab qhov ntsuas ntsuas ntawm methylcellulose hmoov rau hauv lub thawv huv, qhuav.Maj mam ntxiv cov kuab tshuaj (xws li, dej distilled) rau cov hmoov thaum nplawm tas li.Qhov sib ntxiv ntawm cov kuab tshuaj yuav tsum tau ua kom maj mam los tiv thaiv clumping thiab xyuas kom meej dispersion ntawm methylcellulose.
Kauj Ruam 3: Mixing thiab Dissolution
Txuas ntxiv sib tov kom txog thaum cov hmoov methylcellulose tag nrho dispersed thiab pib yaj.Nyob ntawm qib thiab concentration ntawm methylcellulose siv, kev ua kom tiav yuav siv sij hawm ntev.Kev kub siab dua tuaj yeem ua kom cov txheej txheem tawg sai sai, tab sis zam dhau qhov ntsuas kub tau pom zoo, vim nws tuaj yeem cuam tshuam cov khoom ntawm cov tshuaj.
Kauj Ruam 4: Kho pH (yog tias tsim nyog)
Hauv qee qhov kev siv, nws yuav tsim nyog los kho cov pH ntawm cov tshuaj methylcellulose kom ua tiav cov khoom xav tau lossis txhim kho kev ruaj ntseg.Siv lub ntsuas pH lossis pH ntsuas pH los ntsuas pH ntawm cov tshuaj thiab kho nws raws li qhov xav tau los ntawm kev ntxiv me me ntawm cov kua qaub lossis cov hauv paus.
Kauj Ruam 5: Tso dej rau dej
Tom qab cov hmoov methylcellulose tau yaj tag, cia cov tshuaj hydrate rau lub sijhawm txaus.Lub sij hawm dej tuaj yeem sib txawv nyob ntawm qib thiab cov concentration ntawm methylcellulose siv.Thaum lub sij hawm no, cov tshuaj tej zaum yuav undergo ntxiv thickening los yog gelling, yog li saib xyuas nws viscosity thiab kho raws li qhov tsim nyog.
Kauj Ruam 6: Homogenization (yog tias tsim nyog)
Yog hais tias cov tshuaj methylcellulose pom tsis sib xws los yog particle aggregation, ntxiv homogenization yuav tsum tau.Qhov no tuaj yeem ua tiav los ntawm kev sib txuas ntxiv lossis siv homogenizer kom ntseeg tau tias muaj kev sib cais ntawm cov methylcellulose hais.
Kauj Ruam 7: Cia thiab tuav
Thaum npaj, khaws cov tshuaj methylcellulose hauv ib lub thawv huv, kaw ntom ntom kom tsis txhob muaj kab mob thiab evaporation.Cov thawv ntim khoom kom zoo yuav tsum qhia qhov concentration, hnub ntawm kev npaj, thiab lwm yam kev cia khoom (piv txwv li, qhov kub thiab txias, lub teeb raug).Tuav cov tshuaj nrog kev saib xyuas kom tsis txhob nchuav thiab tswj nws txoj kev ncaj ncees.
5. Kev daws teeb meem:
Yog tias cov hmoov methylcellulose tsis yaj tag, sim ua kom lub sij hawm sib tov los yog kho qhov kub.
Kev sib cais los yog tsis sib xws yuav tshwm sim los ntawm kev ntxiv cov kuab tshuaj sai dhau los yog tsis txaus sib xyaw.Xyuas kom maj mam ntxiv ntawm cov kuab tshuaj thiab ua tib zoo nplawm kom ua tau zoo dispersion.
Kev tsis sib haum xeeb nrog lwm cov khoom xyaw lossis pH hnyav tuaj yeem cuam tshuam rau kev ua haujlwm ntawm cov tshuaj methylcellulose.Xav txog kev kho cov formulation los yog siv lwm yam additives kom ua tiav cov khoom uas xav tau.
6. Kev txiav txim siab txog kev nyab xeeb:
Tuav methylcellulose hmoov nrog kev saib xyuas kom tsis txhob nqus los yog sib cuag nrog daim tawv nqaij thiab qhov muag.Hnav cov khoom tiv thaiv tus kheej tsim nyog (piv txwv li, hnab looj tes, tsom iav) thaum tuav cov hmoov.
Ua raws li cov txheej txheem kev nyab xeeb thiab cov lus qhia kom raug thaum ua haujlwm nrog cov tshuaj thiab cov khoom siv hauv chav kuaj.
Pov tseg cov tshuaj methylcellulose uas tsis siv lossis tas sij hawm siv raws li cov cai hauv zos thiab cov lus qhia rau kev pov tseg tshuaj lom neeg.
Kev npaj cov tshuaj methylcellulose suav nrog kev xaiv cov qib tsim nyog, txiav txim siab qhov xav tau concentration, thiab ua raws cov txheej txheem ib ntus rau kev sib cais thiab homogenization.Los ntawm kev ua raws li cov lus qhia no thiab xav txog kev ceev faj txog kev nyab xeeb, koj tuaj yeem npaj cov tshuaj methylcellulose haum raws li koj qhov kev thov tshwj xeeb.
Post lub sij hawm: Apr-12-2024