Yuav txheeb xyuas HPMC zoo li cas?

Hydroxypropyl methyl cellulose (HPMC)yog ib qho tsw tsw, tsw, tsis muaj tshuaj lom dawb hmoov. Tom qab tag nrho dissolving hauv dej, hydroxypropyl methyl cellulose yuav tsim ib pob tshab viscous colloid.

▲ Cov ntaub ntawv tseem ceeb ntawm hydroxypropyl methyl cellulose (HPMC): paj rwb refined, methyl chloride, propylene oxide, thiab lwm yam raw khoom, caustic soda, acid, toluene, isopropanol, thiab lwm yam.

Kev sib piv ntawm qhov zoo thiab qhov tsis zoo ntawm hydroxypropyl methyl cellulose:
1.Pure hydroxypropyl methyl cellulose HPMC yog xoob pom kev thiab muaj qhov ntom ntom me me, nrog qhov ntsuas ntawm 0.3-0.4 / ml.
HPMC deev luag poj luag txiv muaj fluidity zoo heev thiab xav tias hnyav dua, uas yog ho txawv ntawm cov khoom tiag nyob rau hauv tsos.
2.Ntshiab hydroxypropyl methyl cellulose HPMC aqueous tov yog ntshiab, siab transmittance, dej tuav tus nqi> 97%.
Cov tshuaj HPMC aqueous uas tau muab pov tseg yog qhov qias neeg, thiab cov dej tuav tau yooj yim mus txog 80%.
3.Pure HPMC yuav tsum tsis txhob hnov ​​​​qab txog ammonia, hmoov txhuv nplej siab thiab cawv.
Adulterated HPMC feem ntau tuaj yeem hnov ​​​​txhua yam ntawm flavors, txawm tias nws tsis qab, nws yuav hnov ​​​​qhov hnyav.
4.Pure hydroxypropyl methyl cellulose HPMC hmoov yog fibrous nyob rau hauv ib lub tshuab tsom iav los yog iav magnifying.
Adulterated HPMC tuaj yeem pom raws li cov khoom siv granular lossis crystals nyob rau hauv lub tshuab tsom iav lossis iav tsom iav.

Los ntawm dab tsi los txheeb xyuas qhov zoo thiab qhov tsis zoo ntawm hydroxypropyl methyl cellulose?
1. dawb degree
Txawm hais tias kev ua kom dawb tsis tuaj yeem txiav txim siab seb HPMC puas siv tau yooj yim, thiab yog tias cov tshuaj ntxuav hniav dawb ntxiv thaum lub sijhawm tsim khoom, nws yuav cuam tshuam rau nws qhov zoo. Txawm li cas los xij, feem ntau ntawm cov khoom zoo muaj cov xim zoo nkauj.

2. Kev ua zoo
Qhov zoo ntawm HPMC feem ntau muaj 80 mesh thiab 100 mesh, thiab qhov zoo dua qhov zoo, feem ntau hais lus, qhov zoo dua.
3. Kev xa tawm
Muab tso rauHydroxypropyl methyl cellulose (HPMC)rau hauv dej los tsim cov pob tshab colloid, thiab xyuas nws lub teeb transmittance. Qhov siab dua lub teeb xa hluav taws xob, qhov zoo dua, qhia tias muaj cov khoom tsis zoo hauv nws tsawg. Lub permeability ntawm ntsug reactors feem ntau zoo, thaum cov kab rov tav reactors yog phem.

4.Proportion
Qhov loj dua qhov tshwj xeeb gravity, qhov hnyav dua qhov zoo. Qhov tshwj xeeb yog loj, feem ntau vim hais tias cov ntsiab lus ntawm hydroxypropyl pawg hauv nws yog siab, thiab cov ntsiab lus ntawm hydroxypropyl pawg yog siab, cov dej tuav tau zoo dua.


Lub sij hawm xa tuaj: Plaub Hlis-25-2024