Carboxymethyl cellulose (Carboxymethyl cellulose) yog tsim los ntawm cov tshuaj tiv thaiv ntawm hydroxyl pab pawg neeg ntawm anhydroglucose chav tsev ntawm cellulose saw nrog etherification pawg (chloro Z acid los yog ethylene oxide);
Nws yog xim tsis muaj xim amorphous soluble hauv dej, aqueous alkali kua, ammonia thiab cellulose kua, insoluble nyob rau hauv organic kua thiab ntxhia roj; nws tuaj yeem siv los ua qhov loj me, calendering thiab thickening tus neeg sawv cev hauv kev lag luam textile;
Tus neeg saib xyuas tus qauv hauv daim ntawv thiab pawg thawj coj saib;
Reabsorption ntawm impurities nyob rau hauv cov khoom siv tshuaj ntxuav;
Flotation tus neeg sawv cev rau xaiv tooj liab-nickel thiab potassium ore;
Nqus suspension thickener thiab stabilizer thaum drilling roj thiab roj qhov dej;
kua nplaum muaj pes tsawg leeg rau wallpaper;
qhuav siv sib tov Cheebtsam;
Dej latex xim Cheebtsam, thiab lwm yam.
Hydroxypropyl methylcellulose (Hypromellose, Cellulose) yog ua los ntawm cov paj rwb ntshiab heev cellulose ua raw khoom, uas yog tshwj xeeb etherified nyob rau hauv alkaline tej yam kev mob, thiab tsis muaj tej yam khoom xyaw xws li tsiaj cov kab mob thiab roj. Soluble nyob rau hauv dej thiab feem ntau polar thiab tsim nyog proportions ntawm ethanol / dej, propanol / dej, dichloroethane, thiab lwm yam, insoluble nyob rau hauv ether, acetone, thiab kiag li ethanol, thiab swells rau hauv ib tug ntshiab los yog me ntsis turbid colloidal tov nyob rau hauv dej txias. Cov tshuaj aqueous muaj cov dej num saum npoo av, siab pob tshab thiab kev ua haujlwm ruaj khov.
HPMC muaj cov cuab yeej ntawm thermal gelation. Cov khoom aqueous tov yog rhuab los ua ib tug gel thiab precipitates, thiab ces dissolves tom qab txias. Lub gelation kub ntawm txawv specifications txawv. Solubility sib txawv nrog viscosity. Qhov qis dua qhov viscosity, qhov ntau dua qhov solubility. Cov kev tshwj xeeb sib txawv ntawm HPMC muaj qee qhov sib txawv hauv lawv cov khoom. Kev sib cais ntawm HPMC hauv dej tsis cuam tshuam los ntawm tus nqi pH.
Post lub sij hawm: Apr-24-2023