Cellulose ether viscosity xeem

Lub viscosity ntawmNeeg muaj neeg ua haujlwm, xws li hydroxyprropy methylcellose (HPMC) lossis carboxymethyl cellulose (cmc), yog qhov cuam tshuam rau lawv qhov kev ua tau zoo hauv ntau yam kev siv. Viscosity yog kev ntsuas ntawm cov kua dej tsis kam mus ntws, thiab nws tuaj yeem cuam tshuam los ntawm kev pom zoo, ntsuas kub, thiab cov degree ntawm lub cellulose ether.

Ntawm no yog phau ntawv qhia dav dav ntawm yuav ua li cas viscosity kev ntsuam xyuas rau cellulose neeg muaj kev pab tau tuaj yeem ua tau:

Brookfield Viscometer:

Tus Brookfield Viscompteter yog ib qho khoom siv uas siv los ntsuas qhov viscosity ntawm dej. Cov kauj ruam hauv qab no muab cov qauv qhia tseem ceeb rau kev ua tus ntsuas viscosity:

1. Kev Npaj Qauv:
   • Npaj ib qho kev paub txog kev teeb tsa ntawm lub cellulose ether. Cov kev xaiv tau xaiv yuav nyob ntawm seb cov kev xav tau ntawm daim ntawv thov.
2. Qhov kub txau:
   • Xyuas kom meej tias cov qauv yog sib npaug rau qhov ntsuas kub xav tau. Viscosity tuaj yeem yog qhov kub-muaj kev kub ntxhov, yog li sim ntawm kev tswj kub yog qhov tseem ceeb rau kev ntsuas yog.
3. Calibration:
   • Ntsuas cov brookfield Viscometer siv cov tshuaj calibration kom huv si kom ntseeg tau tias yog kev nyeem tau meej.
4. Chaw thau cov qauv:
   • Thauj cov tshuaj ether muaj peev xwm ether ether rau hauv vis patamereter.
5. Xaiv cov spindle:
   • Xaiv ib qho uas tsim nyog ntxaiv raws li qhov xav pom viscosity ntau ntawm cov qauv. Cov nyias muaj nyias cov nyias muaj nyias rau qhov tsis muaj zog, nruab nrab, thiab siab voscosity li.
6. Kev Ntsuas:
   • Raus cov ntxaiv mus rau hauv cov qauv, thiab pib tus visliveg. Lub ntxaiv rotates nyob rau ntawm qhov ceev tsis tu ncua, thiab cov tsis kam mus rau kev sib hloov yog ntsuas.
7. Cov ntaub ntawv kaw tseg:
   • Sau cov viscososity nyeem ntawv los ntawm vis popcometer zaub. Chav ntsuas ntsuas ntsuas yog feem ntau hauv centipoise (CP) lossis Millipipascal-vib nas this (MpaN nkaus).
8. Rov ntsuas dua:
   • Ua ntau yam kev ntsuas ntsuas kom ntseeg tau repleupucient. Yog tias viscosity sib txawv nrog lub sijhawm, kev ntsuas ntxiv yuav tsim nyog.
9. Cov ntaub ntawv tsom xam:
   • Txheeb xyuas cov ntaub ntawv viscosity nyob rau hauv cov ntsiab lus uas yuav tsum tau ua. Cov ntawv thov sib txawv yuav muaj cov hom phiaj viscosity.

Yam cuam tshuam rau viscosity:

1. Concentration:
   • Kev txiav txim siab dua ntawm cellulose ether cov kev daws teeb meem feem ntau ua rau viscosities ntau dua.
2. Kub:
   • Viscosity tuaj yeem muaj qhov kub-nkag. Ntau dua qhov kub yuav txo vepisposity.
3. Degree ntawm hloov chaw:
   • Cov qib ntawm lub cellulose ether tuaj yeem cuam tshuam nws cov tuab thiab, yog li, nws viscosity.
4. Shear tus nqi:
   • Viscosity yuav txawv nrog shear tus nqi, thiab cov kev sib txawv ntawm cov neeg tuaj yeem sib txawv tuaj yeem ua haujlwm ntawm cov nqi sib txawv.

Nco ntsoov ua raws cov lus qhia tshwj xeeb muab los ntawm cov khw ntawm cellulose ether rau kev tshuaj xyuas raws li hom cellulose ether thiab nws cov ntawv thov.