Hydroxypropylmethylcellulose (HPMC) yog cov tshuaj siv dav hauv ntau lub lag luam. Nws yog tsuas yog siv rau thickening thiab emulsifying lub hom phiaj hauv kev tsim kho, khoom noj khoom haus, tshuaj pleev ib ce thiab tshuaj. Hauv tsab xov xwm no, peb tham txog qee cov lus qhia txog kev siv HPMC kom zoo hauv cov txheej txheem tsim khoom.
1. Nkag siab cov yam ntxwv ntawm HPMC
Ua ntej siv HPMC hauv kev tsim khoom, nws yog ib qho tseem ceeb kom nkag siab txog nws lub cev thiab tshuaj lom neeg. HPMC yog soluble hauv dej thiab insoluble hauv cov kuab tshuaj organic. Thaum ntxiv rau dej, nws tsim cov kua dej ntshiab thiab khov. HPMC yog non-toxic, non-ionic, thiab tsis hnov mob nrog lwm yam tshuaj.
2. Txiav txim siab qib HPMC uas tsim nyog
HPMC muaj nyob rau hauv ntau qib, txhua qhov sib txawv viscosities, molecular luj thiab particle loj. Xaiv qhov raug qib yog nyob ntawm hom khoom koj tsim. Piv txwv li, yog tias koj tab tom ua cov kua dej nyias, koj yuav xav tau qib qis viscosity ntawm HPMC, thiab rau cov khoom tuab, qib viscosity siab dua. Kev sab laj nrog HPMC cov chaw tsim khoom raug pom zoo los txiav txim siab qib tsim nyog rau koj cov khoom.
3. Ua kom muaj kev cia zoo
HPMC yog hygroscopic, uas txhais tau hais tias nws absorbs noo noo los ntawm huab cua. Nws yog ib qho tseem ceeb uas yuav tsum khaws HPMC nyob rau hauv qhov chaw qhuav thiab txias kom tsis txhob muaj caking lossis hardening. Yuav tsum tau muab cia rau hauv cov thawv airtight kom tsis txhob raug cua lossis ya raws.
4. Muab HPMC sib xyaw nrog lwm cov khoom xyaw
HPMC feem ntau yog siv los ua thickener lossis binder thaum lub sijhawm tsim khoom. Nws yog ib qho tseem ceeb kom sib xyaw HPMC zoo nrog rau lwm cov khoom xyaw kom ntseeg tau tias muaj kev sib xyaw ua ke. HPMC yuav tsum tau ntxiv rau hauv dej thiab nplawm kom huv si ua ntej sib tov nrog lwm cov khoom xyaw.
5. Siv HPMC tus nqi tsim nyog
Qhov tseeb ntawm HPMC ntxiv rau cov khoom yog nyob ntawm seb lub cev xav tau, viscosity thiab lwm yam khoom xyaw. Tshaj lossis qis dua ntawm HPMC tuaj yeem cuam tshuam qhov zoo thiab ruaj khov ntawm cov khoom kawg. Nws raug nquahu kom siv HPMC nyob rau hauv ntau qhov kev pom zoo los ntawm cov chaw tsim khoom.
6. Maj mam ntxiv HPMC rau dej
Thaum ntxiv HPMC rau dej, nws yuav tsum tau ntxiv maj mam kom tsis txhob tsim cov clumps. Kev nplawm tas li yog qhov tsim nyog thaum ntxiv HPMC rau dej kom ntseeg tau tias muaj kev sib xyaw ua ke. Ntxiv HPMC sai heev yuav ua rau muaj kev sib cais tsis sib xws, uas yuav cuam tshuam rau cov khoom kawg.
7. Ua kom zoo pH
Thaum siv HPMC, pH ntawm cov khoom yog qhov tseem ceeb. HPMC muaj qhov txwv pH, nyob nruab nrab ntawm 5 thiab 8.5, dhau qhov uas nws cov txiaj ntsig yuav raug txo lossis poob. Kev tswj hwm qib pH kom raug yog qhov tseem ceeb thaum ua haujlwm nrog HPMC.
8. Xaiv qhov kub thiab txias
Thaum siv HPMC, qhov kub ntawm cov khoom thaum lub sij hawm tsim thiab cia yog qhov tseem ceeb. Cov khoom ntawm HPMC, xws li viscosity, solubility, thiab gelation, nyob ntawm qhov kub thiab txias. Qhov kub zoo tshaj rau kev sib xyaw HPMC yog 20-45 degrees Celsius.
9. Txheeb xyuas qhov sib raug ntawm HPMC nrog lwm cov khoom xyaw
Tsis yog tag nrho cov khoom xyaw sib xyaw nrog HPMC. Compatibility ntawm HPMC nrog rau lwm cov khoom xyaw yuav tsum tau kuaj ua ntej ntxiv HPMC. Qee cov khoom xyaw tuaj yeem txo cov txiaj ntsig ntawm HPMC, thaum lwm tus tuaj yeem txhim kho nws.
10. Saib xyuas cov kev mob tshwm sim
Txawm hais tias HPMC tsis muaj tshuaj lom thiab siv tau zoo, nws yuav ua rau tawv nqaij lossis qhov muag khaus. Yuav tsum tau ceev faj, xws li hnav cov khoom tiv thaiv xws li hnab looj tes thiab tsom iav, thiab tsis txhob ua pa HPMC plua plav.
Txhawm rau ua kom tiav, ntxiv HPMC hauv cov txheej txheem tsim khoom tuaj yeem txhim kho qhov zoo thiab ruaj khov ntawm cov khoom. Txawm li cas los xij, txhawm rau siv HPMC kom zoo, nws yog ib qho tsim nyog yuav tsum tau ceev faj thiab ua raws li cov lus qhia saum toj no.
Post lub sij hawm: Lub Xya hli ntuj-28-2023