Hydroxyethyl cellulose yog non-ionic dej-soluble polymer ua los ntawm cellulose, ib tug natural polymer khoom, los ntawm ib tug series ntawm tshuaj. Nws yog xim dawb los yog daj, tsis muaj ntxhiab tsw thiab tsis qab zib hmoov, uas tuaj yeem yaj hauv ob qho dej txias thiab dej kub, thiab qhov kev sib cais nce ntxiv nrog qhov kub thiab txias. Feem ntau, nws yog insoluble nyob rau hauv feem ntau cov organic solvents. Nws yog siv los ua thickener thiab stabilizer hauv cov xim latex. Nws yog ib qho yooj yim rau disperse nyob rau hauv dej txias nrog pH nqi tsawg dua los yog sib npaug rau 7, tab sis nws yog ib qho yooj yim rau agglomerate nyob rau hauv alkaline kua, yog li nws yog feem ntau npaj ua ntej rau kev siv tom qab, los yog qaug zog acid dej los yog cov organic tov yog ua rau slurry. , thiab nws tseem tuaj yeem tov nrog lwm cov granular Cov khoom xyaw qhuav qhuav ua ke.
Cov yam ntxwv ntawm hydroxyethyl cellulose:
HEC yog soluble nyob rau hauv dej kub los yog txias, thiab tsis precipitate ntawm kub los yog boiling, uas ua rau nws muaj ib tug ntau yam ntawm solubility thiab viscosity yam ntxwv, thiab non-thermal gelation.
Nws tuaj yeem ua ke nrog ntau yam ntawm lwm cov dej-soluble polymers, surfactants, thiab ntsev, thiab yog ib qho zoo heev colloidal thickener rau cov kev daws teeb meem uas muaj cov electrolytes siab.
Lub peev xwm tuav dej yog ob zaug siab dua li ntawm methyl cellulose, thiab nws muaj kev tswj xyuas zoo dua.
Piv nrog rau kev lees paub methyl cellulose thiab hydroxypropyl methyl cellulose, lub peev xwm dispersing ntawm HEC yog qhov phem tshaj, tab sis muaj peev xwm tiv thaiv colloid yog qhov muaj zog tshaj.
Kev tsim kho zoo heev; nws muaj qhov zoo ntawm kev ua haujlwm-txuag, tsis yooj yim rau drip, anti-sag, zoo tiv thaiv txaws, thiab lwm yam.
Zoo compatibility nrog ntau yam surfactants thiab preservatives siv nyob rau hauv latex xim.
Kev khaws cia viscosity ruaj khov, uas tuaj yeem tiv thaiv qhov dav dav hydroxyethyl cellulose los ntawm kev txo cov viscosity ntawm cov xim latex thaum khaws cia vim qhov decomposition ntawm enzymes.
Post lub sij hawm: May-25-2023