Feem ntau siv cov neeg muaj kev pab cuam cellulose suav nrog HEC, HPMC, CMC, CMC, MHEC thiab qhov zoo li. Cov dej tsis-ionic-soluble cellulose muaj cov nplaum, dispersion ruaj khov thiab dej retiving muaj peev xwm, thiab yog ib qho kev siv ntxiv rau cov khoom siv hauv tsev. HPMC, MC lossis EHEC tau siv nyob rau hauv feem ntau cement-raws li cov kev sib xyaw ua ke, thiab lwm yam tuaj yeem txhim kho qhov tawg ntawm cov cement lossis xuab zeb thiab txhim kho cov nplaum, uas yog qhov tseem ceeb heev rau plaster, vile xis mas thiab putty. HEC yog siv hauv cov cement, tsis tsuas yog ua retarder, tab sis kuj yog dej-retaining tus neeg sawv cev. HEHPC tseem muaj daim ntawv thov no.
HydroxyPropyl methylcellose HPMC cov khoom ua ke ntau lub cev thiab tshuaj lom neeg mus rau cov khoom lag luam tshwj xeeb nrog ntau yam khoom siv thiab cov khoom:
Dej khaws cia: Nws tuaj yeem khaws cov dej ntawm cov chaw muaj ntau yam xws li cov ntoo zeb cient thiab cib.
Zaj duab xis-tsim: Nws tuaj yeem tsim qhov pob tshab, tawv thiab muag ua zaj duab xis nrog grease zoo heev.
Organic solubility: cov khoom yog soluble hauv qee cov kuab tshuaj organic, xws li tsim nyog sib tw ntawm ethanicol / dej, dichloroethane thiab cov kuab tshuaj uas muaj ob tus organic cov kuab tshuaj.
Thermal gelation: Thaum cov tshuaj aqueous ntawm cov khoom lag luam yog rhuab, gel yuav tsim, thiab cov gel tsim rov qab rau hauv kev daws teeb meem thaum txias.
Cov haujlwm saum npoo av: Muab cov kev ua si saum npoo hauv kev daws teeb meem emulsification thiab tiv thaiv kev tiv thaiv kab colloids, raws li theem ruaj khov.
Kev ncua: HydroxyPropyyl methylcellulose tiv thaiv cov khoom me me los ntawm kev tsim, yog li inhibiting qhov tsim ntawm cov peev xwm.
Kev tiv thaiv kev sib xyaw: tiv thaiv cov tee dej thiab cov khoom ntawm cov coalescing lossis coagulating.
DEJ SOLLEBLE: Cov khoom tuaj yeem tawm hauv cov dej hauv cov khoom sib txawv, qhov siab tshaj plaws tsuas yog tsuas yog los ntawm viscosity.
Tsis yog-ionic inertness: cov khoom yog cov tsis-ionic cellulose cellulose ether uas tsis sib xyaw nrog cov kav hlau lossis lwm yam ions los ua insoluble precipitates.
Acid-puag kev ruaj khov: haum rau siv nyob rau hauv ntau ntawm PH3.0-11.0.
Lub Sijhawm Post: Sep-22-2022