Cov tshuaj txhua hnub qib hydroxypropyl methyl cellulose yog ib qho hluavtaws polymer npaj los ntawm kev hloov kho tshuaj ntawm ntuj cellulose ua raw khoom. Cellulose ether yog ib qho derivative ntawm natural cellulose, cellulose ether ntau lawm thiab hluavtaws polymer yog txawv, nws cov khoom siv yooj yim tshaj plaws yog cellulose, lub ntuj polymer compound. Vim tias qhov tshwj xeeb ntawm cov qauv cellulose, cellulose nws tus kheej tsis muaj peev xwm ua rau cov tshuaj etherifying. Txawm li cas los xij, tom qab kev kho mob ntawm tus neeg sawv cev o, lub zog hydrogen bonds ntawm thiab nyob rau hauv cov saw hlau molecular raug rhuav tshem, thiab kev ua haujlwm ntawm pawg hydroxyl raug tso tawm rau hauv alkali cellulose nrog lub peev xwm reactive. Tom qab cov tshuaj tiv thaiv ntawm etherifying tus neeg sawv cev, pawg -OH hloov mus rau hauv -OR pawg kom tau txais cellulose ether.
Txhua hnub tshuaj qib tshwj xeeb 200 txhiab viscosity instant hydroxypropyl methyl cellulose yog cov hmoov dawb los yog daj me ntsis, thiab tsis muaj ntxhiab, tsis qab, tsis muaj tshuaj lom. Soluble nyob rau hauv ib tug sib tov ntawm dej txias thiab organic solvents los ua ib tug pob tshab kua. Cov kua dej muaj cov dej num saum npoo av, siab pob tshab, muaj zog ruaj khov, solubility hauv dej tsis cuam tshuam los ntawm pH. Thickening thiab antifreeze nyhuv hauv tshuaj zawv plaub hau thiab ntxuav lub cev, tuav dej thiab tsim cov yeeb yaj kiab zoo rau cov plaub hau thiab tawv nqaij. Nrog rau qhov nce loj hauv cov khoom siv raw, cellulose (antifreeze thickener) tuaj yeem siv rau hauv cov tshuaj zawv plaub hau thiab ntxuav lub cev tuaj yeem txo tus nqi thiab ua tiav cov txiaj ntsig xav tau.
1. Cov yam ntxwv thiab qhov zoo ntawm cov tshuaj niaj hnub qib cellulose HPMC:
1, tsis tshua muaj khaus, kub siab thiab kev sib deev;
2, ntau yam ntawm pH stability, nyob rau hauv tus nqi pH ntawm 3-11 ntau yam tuaj yeem ua kom nws ruaj khov;
3. Txhim kho qhov tseem ceeb ntawm kev muaj laj thawj;
4. Ua npuas ncauj, ruaj khov npuas, txhim kho daim tawv nqaij;
5. Ua tau zoo txhim kho lub cev muaj peev xwm.
2 txhua hnub tshuaj qib cellulose HPMC daim ntawv thov Scope:
Siv rau hauv tshuaj zawv plaub hau, ntxuav lub cev, tshuaj ntxuav lub ntsej muag, tshuaj pleev ib ce, gel, toner, txias, shaping khoom, tshuaj txhuam hniav, dej, khoom ua si npuas dej.
3 Lub luag haujlwm ntawm txhua hnub tshuaj qib cellulose HPMC:
Nyob rau hauv daim ntawv thov ntawm cov tshuaj pleev ib ce, nws yog tsuas yog siv rau thickening, foaming, ruaj khov emulsification, dispersion, adhesion, zaj duab xis tsim thiab dej retention kev ua tau zoo, high viscosity khoom yog siv raws li thickening, tsawg viscosity khoom yog tsuas yog siv raws li ncua kev kawm ntawv dispersion thiab zaj duab xis tsim. .
4 niaj hnub tshuaj qib cellulose HPMC tshuab:
Hydroxypropyl methyl fiber kom hloov mus rau viscosity ntawm cov tshuaj lom neeg kev lag luam feem ntau yog 100 txhiab, 150 txhiab, 200 txhiab, raws li lawv tus kheej cov mis los xaiv cov nyiaj ntxiv hauv cov khoom yog feem ntau peb mus rau tsib txhiab.
Post lub sij hawm: Sep-19-2022