Viscosity ntawm hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) yog ib qho polymer uas tsis yog ionic, yaj hauv dej uas siv dav ua cov khoom ua kom tuab, ruaj khov, thiab khi hauv ntau yam lag luam, suav nrog tshuaj, tshuaj pleev ib ce, thiab kev tsim kho. Nws qhov viscosity ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab nws cov kev ua tau zoo hauv cov ntawv thov no.

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

Qhov viscosity ntawm HEC tuaj yeem ntsuas tau siv lub viscometer, uas ntsuas qhov tsis kam ntawm cov kua dej kom ntws. Ntau hom viscometers yuav siv tau, suav nrog rotational viscometers thiab capillary viscometers, nyob ntawm daim ntawv thov tshwj xeeb thiab qhov ntau ntawm viscosity.

Feem ntau, HEC viscosity siab dua yog qhov nyiam siv rau hauv cov ntawv thov uas thickening thiab stabilization tseem ceeb, xws li hauv cov tshuaj formulations, tshuaj pleev ib ce, thiab cov khoom siv tu tus kheej. Piv txwv li, HEC viscosity siab feem ntau siv rau hauv cov tshuaj zawv plaub hau thiab cov tshuaj txias kom txhim kho lawv cov qauv thiab kev ua tau zoo, nrog rau hauv cov tshuaj pleev thiab cov tshuaj pleev kom muab qhov du, zoo nkauj.

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

Qhov viscosity ntawm HEC kuj tseem tuaj yeem hloov kho los ntawm ntau txoj kev tshuaj lom neeg thiab lub cev, suav nrog crosslinking, acid hydrolysis, thiab blending nrog lwm cov polymers. Cov kev hloov kho no tuaj yeem hloov cov khoom ntawm HEC thiab ua rau muaj kev ua tau zoo dua hauv cov ntawv thov tshwj xeeb.

Hauv kev xaus, qhov viscosity ntawm HEC yog ib qho tseem ceeb hauv kev txiav txim siab nws cov kev ua tau zoo hauv ntau yam kev siv. Qhov degree ntawm kev hloov pauv, qhov hnyav molecular, concentration, thiab pH txhua tus ua lub luag haujlwm hauv kev txiav txim siab nws cov viscosity, uas tuaj yeem ntsuas tau siv viscometer. Cov lag luam sib txawv thiab cov ntawv thov yuav xav tau ntau qib ntawm viscosity, thiab kev hloov kho rau HEC tuaj yeem ua kom nws cov kev ua tau zoo hauv cov ntawv thov tshwj xeeb.