Hydroxypropyl methyl cellulose HPMC yog dab tsi?

HPMC hydroxypropyl methyl cellulosechaw tsim khoom tsim khoom Hoobkas muag khoom xa tawm
Kev siv tseem ceeb ntawm HPMC yog dab tsi?
HPMC muaj peev xwm muab faib ua: qib kev tsim kho, qib zaub mov thiab qib kev kho mob los ntawm kev siv.
HPMC siv dav hauv cov ntaub ntawv tsim kho, tshuaj pleev xim, cov khoom siv hluavtaws, cov khoom siv av nplaum, tshuaj, khoom noj, textile, kev ua liaj ua teb, tshuaj pleev ib ce, luam yeeb thiab lwm yam lag luam.
Tam sim no, feem ntau ntawm cov qib kev tsim kho hauv tsev, hauv qib kev tsim kho, cov hmoov putty ntau heev, kwv yees li 90% yog siv los ua hmoov putty, tus so yog siv los ua cov cement mortar thiab kua nplaum.

Cov khoom siv tseem ceeb ntawm HPMC yog dab tsi?
Cov khoom siv tseem ceeb ntawm HPMC: paj rwb zoo, chloromethane, propylene oxide. Lwm cov khoom siv raw yog, ntsiav tshuaj alkali, acid, toluene, isopropanol thiab lwm yam.

- HPMC muab faib ua ntau hom, qhov sib txawv ntawm kev siv yog dab tsi?
HPMC muaj peev xwm muab faib ua hom instant thiab hom kub soluble.

Cov khoom lag luam tam sim ntawd, hauv dej txias sai sai tawg, ploj mus rau hauv dej, lub sijhawm no cov kua tsis muaj viscosity, vim HPMC tsuas yog tawg hauv dej, tsis muaj kev yaj tiag tiag. Kwv yees li 2 feeb, qhov viscosity ntawm cov kua maj mam nce, tsim cov colloid viscous pob tshab. Ntau yam kev siv, hauv cov hmoov putty thiab mortar, thiab kua nplaum thiab xim, tuaj yeem siv, tsis muaj kev txwv.

Cov khoom kub yaj, hauv dej txias, tuaj yeem tawg sai sai hauv dej kub, ploj mus hauv dej kub, thaum qhov kub poob rau qee qhov kub, viscosity maj mam tshwm sim, kom txog thaum tsim cov pob tshab viscous colloid. Tsuas yog siv tau rau hauv hmoov putty thiab mortar, hauv kua nplaum thiab xim, yuav muaj ib pawg neeg tshwm sim, tsis tuaj yeem siv.

Cov cim qhia tseem ceeb ntawm kev siv tshuab yog dab tsi?HPMC?
Cov ntsiab lus Hydroxypropyl thiab viscosity, feem ntau cov neeg siv txhawj xeeb txog ob qho ntsuas no.

Cov ntsiab lus Hydroxypropyl siab, kev khaws dej feem ntau zoo dua.

Qhov viscosity, dej khaws cia, txheeb ze (tab sis tsis yog kiag li) kuj zoo dua, thiab viscosity, hauv cov cement mortar zoo dua siv qee qhov.

Muaj pes tsawg viscosity haum rau HPMC?
Lub luag haujlwm tseem ceeb tshaj plaws ntawm HPMC yog kev khaws cia dej, ua raws li kev ua kom tuab.
Feem ntau, cov hmoov putty muaj peev xwm tuav tau 100,000 cps. Yog tias cov dej khaws cia zoo, qhov viscosity qis (70,000-80000), nws kuj ua tau, tau kawg, qhov viscosity loj dua, qhov dej khaws cia zoo dua, thaum qhov viscosity ntau dua 100,000, qhov viscosity tsis muaj feem cuam tshuam rau qhov dej khaws cia.
Qhov yuav tsum tau muaj nyob rau hauv MORTAR yog qee qhov siab dua, XAV TAU 150 TXHIAB tsuas yog kom zoo siv.
Daim ntawv thov kua nplaum: xav tau cov khoom lag luam tam sim ntawd, viscosity siab.