Viscosity ntawm hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) yog nonnionic, dej-soluble polymer uas yog dav siv los ua cov thickener, stabilizer, thiab binder nyob rau hauv ntau yam kev lag luam, nrog rau cov kws kho mob, tshuaj pleev ib ce, thiab kev tsim kho. Nws viscosity plays lub luag haujlwm tseem ceeb hauv kev txiav txim siab nws qhov kev ua tau zoo hauv cov ntawv thov no.

Lub viscosity ntawm HEC yog txiav txim siab los ntawm ntau yam, suav nrog nws qhov kev hloov pauv (DS), qhov hnyav molecular, concentration, thiab pH. Lub degree ntawm kev hloov pauv yog hais txog tus naj npawb ntawm hydroxyethyl pawg uas tau ntxiv rau hauv cellulose molecule, thaum lub cev hnyav molecular hais txog qhov loj ntawm cov saw hlau polymer. Qhov concentration ntawm HEC hauv kev daws kuj cuam tshuam rau nws cov viscosity, nrog cov concentrations ntau dua ua rau muaj viscosity ntau dua. Cov pH ntawm cov tshuaj kuj tuaj yeem cuam tshuam rau cov viscosity, nrog cov pH ntau dua qhov feem ntau ua rau qis viscosities.

Lub viscosity ntawm HEC tuaj yeem ntsuas tau siv lub viscometer, uas ntsuas qhov tsis kam ntawm cov kua dej ntws. Ntau hom viscometers tuaj yeem siv tau, suav nrog kev sib hloov viscometers thiab capillary viscometers, nyob ntawm cov ntawv thov tshwj xeeb thiab cov viscosity ntau qhov kev txaus siab.

Feem ntau, HEC muaj viscosity siab dua nyob rau hauv daim ntawv thov uas thickening thiab stabilization yog ib qho tseem ceeb, xws li hauv cov tshuaj formulations, tshuaj pleev ib ce, thiab cov khoom tu tus kheej. Piv txwv li, siab viscosity HEC feem ntau yog siv hauv cov tshuaj zawv plaub hau thiab cov tshuaj kho kom zoo dua qub thiab ua haujlwm zoo, nrog rau cov tshuaj pleev thiab tshuaj pleev kom zoo nkauj zoo nkauj.

Hauv kev tsim kho kev lag luam, HEC yog siv los ua cov thickener thiab dej tuav cov khoom hauv cov khoom siv cement, xws li mortars, grouts, thiab pob zeb. Lub viscosity ntawm HEC hauv cov ntawv thov no yog qhov tseem ceeb rau kev ua tiav qhov xav tau ua haujlwm, adhesion, thiab sib xws ntawm cov khoom kawg.

Lub viscosity ntawm HEC kuj tuaj yeem hloov kho los ntawm ntau yam tshuaj thiab lub cev, suav nrog kev sib txuas, kua qaub hydrolysis, thiab sib xyaw nrog lwm cov polymers. Cov kev hloov kho no tuaj yeem hloov kho cov khoom ntawm HEC thiab ua rau muaj kev ua tau zoo hauv cov ntawv thov tshwj xeeb.

Hauv cov ntsiab lus, viscosity ntawm HEC yog qhov tseem ceeb hauv kev txiav txim siab nws qhov kev ua tau zoo hauv ntau yam kev siv. Qib ntawm kev hloov pauv, qhov hnyav molecular, concentration, thiab pH tag nrho ua lub luag haujlwm hauv kev txiav txim siab nws cov viscosity, uas tuaj yeem ntsuas tau siv lub viscometer. Kev lag luam sib txawv thiab kev siv yuav xav tau ntau qib ntawm viscosity, thiab kev hloov kho rau HEC tuaj yeem tsim los txhim kho nws cov kev ua tau zoo hauv cov ntawv thov tshwj xeeb.