Yam xwm txheej yuav cuam tshuam dab tsi ntawm hydroxypropyl methylulose?

Rau daim ntawv thov ntawm ntub cug,HydroxyPropyyl MethylcelluloseMuaj cov khoom siv thickening zoo, tuaj yeem ua kom muaj peev xwm txhim kho cov tshuaj khib nyiab, yog li tseem tuaj yeem txhim kho phab ntsa sab nraud, thiab muaj zog sib xyaw.

Rau cov nyhuv tuab ntawm cellulose ether, nws kuj tuaj yeem tiv thaiv cov khoom siv ntawm cov khoom siv ntawm cov khoom siv ua kom zoo nkauj, thiab los ntshav thiab los ntshav. Nws tuaj yeem siv rau fiber-profinfed qhob ua, hauv qab dej ua ke thiab kev sib cav sib xyaw ua ke.

HydroxyPropyyl Metylcellulose tuaj yeem ua kom muaj kuab ua tau zoo ntawm cov ntaub ntawv tso cai. Qhov kev ua tau zoo no tsuas yog los ntawm viscosity ntawm cellulose ether. Feem ntau, cov lej ntsuas ntawm viscosity yog siv los txiav txim rau lub viscosity ntawm etherrose ntawm cellulose feem ntau yog hais txog ib qho kev xav ether ether, feem ntau yog 2%, ntawm ib qho ntsuas kub, xws li 20 degrees thiab Ib tus nqi sib hloov, siv cov twj ntsuas ntsuas, xws li cov viscometer sib hloov. Viscosity tus nqi.

Viscosity yog ib qho ntawm cov tsis tseem ceeb los txiav txim rau kev ua tau zoo ntawm cellulose ether. Qhov siab tshaj lub viscosity ntawm hydroxypropylulose cov tshuaj me me ntawm cov khoom siv xis mas raws li cov khoom ua tiav rau lub substrate. Nyob rau tib lub sijhawm, nws muaj kev tawm tsam muaj peev xwm los tiv thaiv kev muaj peev xwm thiab kev tawm tsam muaj zog dua, tab sis yog tias nws cov tshuaj vis discosity dhau lawm, nws yuav cuam tshuam cov khoom siv ntws thiab cov haujlwm ua haujlwm.

Yam xwm txheej yuav cuam tshuam dab tsi ntawm hydroxypropyl methylulose? Feem ntau yog nyob ntawm cov laj thawj hauv qab no.

1. Cov qib siab dua ntawm polymerization ntawm cellulose ntawm hydroxypropylulose, qhov loj dua nws cov tshuaj aqueous.

2. Yog tias cov nyiaj los yog concentration ntawm cellulose ether yog siab dua, lub viscosity ntawm nws cov kua nyeem muaj siab dua. Txawm li cas los xij, kev saib xyuas yuav tsum raug coj los xaiv tus nqi tsim nyog Ethaws thaum siv nws, feem ntau yog kom tsis txhob muaj ntau ntawm cov cellulose ether. Nws yuav cuam tshuam rau kev ua tau zoo ntawm cug thiab pob zeb ua.

3. Zoo li cov kua dej feem ntau, cov viscosity ntawm cellulose ntawm cov tshuaj ether yuav txo qis nrog qhov nce ntxiv mus, thiab ntau dua concentration ntawm cellulose ether, qis dua qhov kub. Qhov ntau dua qhov cuam tshuam.

4. Cellulose cov tshuaj feem ntau yog pseudopastic, uas muaj cov yam ntxwv ntawm shear thinning. Qhov ntau dua cov shear tus nqi thaum ntsuas, qhov me me viscosity.

Cov cohesion ntawm cug yuav raug txo kom zoo vim kev ua ntawm sab nraud, uas tseem muaj txiaj ntsig zoo rau kev tshuaj khib, ua rau muaj kev sib xyaw ntawm lub sijhawm. Txawm li cas los xij, yog tusCellulose etherKev daws teeb meem tau muaj kev txhawj xeeb ntau thaum lub viscosity yog tsawg thiab viscosity yog me me, nws yuav qhia cov yam ntxwv ntawm cov yam ntxwv ntawm Newtonian kua. Thaum cov kev daws teeb meem nce, kev daws teeb meem yuav maj pom cov yam ntxwv ntawm pseudoplastic kua kua, thiab yog ntau dua, pseudoplasticity yuav pom tseeb.