Hydroxyethyl cellulose (HEC) thiab hydroxypropyl methyl cellulose (HPMC) yog ob feem ntau siv cov thickeners.Lawv yog cov khoom ntawm cov nplaum nplaum uas tuaj yeem siv los muab kev tiv thaiv, nce viscosity, lossis muab ductility.Lawv cov tshuaj muaj pes tsawg leeg zoo sib xws, tab sis muaj qee qhov txawv txav.
HEC yog ib qho ethylene-acetate analogue uas muaj formaldehyde, methanol thiab sodium hydroxide.Nws yog thixotropic heev thiab tuaj yeem siv los ua cov roj nplua nyeem, cov tshuaj tua kab mob thiab cov nplaum rau cov khoom siv hluav taws xob thiab kev lag luam.Hecs tuaj yeem siv ua cov thickeners, dispersants thiab scale inhibitors.
HPMC yog lwm yam ethylene-acetate analogue, muaj xws li methanol, sodium hydroxide, thiab carbonate.Nws muaj viscosity siab, elasticity thiab expansibility, tuaj yeem siv los ua cov nplaum, xim, tshuaj ntxuav thiab number case additives.Tsis tas li ntawd, nws tseem tuaj yeem siv rau kev npaj siv lead ua thiab muaj kev ruaj ntseg ntawm kev ua haujlwm du.
Hydroxyethyl cellulose HEC, ua ib qho tsis-ionic surfactant, muaj cov khoom nram qab no ntxiv rau cov thickening, ncua kev kawm ntawv, adhesion, floating, tsim zaj duab xis, dispersion, dej tuav thiab tiv thaiv colloidal teebmeem:
1, hydroxyethyl cellulose HEC tuaj yeem yaj hauv dej kub lossis txias, kub lossis kub kub tsis tuaj yeem ua rau dej nag, yog li nws muaj ntau yam ntawm solubility thiab viscosity yam ntxwv, thiab cov khoom tsis kub kub;
2, hydroxyethyl cellulose HEC nws tus kheej tsis yog-ionic hom tuaj yeem ua ke nrog ntau yam ntawm lwm cov dej-soluble polymers, surfactants, ntsev, yog ib hom colloidal thickener uas muaj cov tshuaj electrolyte siab;
3, hydroxyethyl cellulose HEC dej tuav lub peev xwm yog ob zaug siab dua methyl cellulose, nrog rau kev khiav dej num;
4. Lub peev xwm dispersion ntawm hydroxyethyl cellulose HEC yog qhov tsis zoo piv nrog kev lees paub methyl cellulose thiab hydroxypropyl methyl cellulose, tab sis kev tiv thaiv colloid muaj peev xwm muaj zog.
Lub hom phiaj: Feem ntau yog siv los ua tus neeg ua kom tuab, tiv thaiv tus neeg sawv cev, nplaum, stabilizer thiab npaj cov xim pleev xim, lacquer, number case.Additives siv nyob rau hauv cov roj drilling, gels, tshuaj pleev, tshuaj pleev ib ce, qhov muag clearers, suppositories thiab ntsiav tshuaj, kuj siv raws li hydrophilic gels, skeleton cov ntaub ntawv, kev npaj cov pob txha sustained tso tawm npaj, thiab yuav siv tau raws li stabilizers nyob rau hauv cov zaub mov.