HPMC HydroxyPropyl Methyl celluloseChaw tsim tshuaj paus tsim khoom lag luam Hoobkas xa khoom
Dab tsi yog qhov tseem ceeb ntawm HPMC?
HPMC tuaj yeem faib ua: Qib Kev Tsim Kho, Khoom Noj Qib thiab Qib Kawm Los Ntawm Kev Siv.
HPMC tau dav siv hauv cov ntaub ntawv hauv tsev, cov khoom siv hluavtaws, cov tshuaj, khoom noj, ua yeeb yam, tshuaj pleev ib ce, luam yeeb.
Tam sim no, feem ntau ntawm cov qauv tsim kho hauv tsev, tso hmoov ntau ntau, txog 90% yog siv los ua cov hmoov xis thiab lo kua nplaum.
Dab tsi yog cov ntaub ntawv nyoos ntawm HPMC?
HPMC lub ntsiab raw khoom: refined paj rwb, chloromethane, propylene oxide. Lwm cov khoom siv raw yog, ntsiav tshuaj alkali, acid, toluene, isopropanol thiab lwm yam.
- HPMC tau muab faib ua ntau hom, dab tsi yog qhov sib txawv hauv kev siv?
HPMC tuaj yeem muab faib ua tam sim thiab kub soluble.
Cov khoom lag luam tseem ceeb, hauv dej txias sai sai, ploj hauv cov dej, vim tias HPMC tsuas yog dispersed hauv dej, tsis muaj kev sib cav tiag tiag. Txog 2 feeb, viscosity ntawm cov kua maj mam nce, kev sib sau pob tshab viscous colloid. Kev thov dav ntau, hauv cov hmoov ua kom muaj hmoov thiab tshuaj khib, thiab kua nplaum kua thiab pleev xim, tuaj yeem siv, tsis muaj kev tab.
Cov kub soluble cov khoom, hauv dej txias, tuaj yeem nrawm nrawm rau hauv dej kub, thaum kub txav maj mam tshwm, kom txog thaum tsim ntawm pob tshab viscous colloid. Tsuas siv tau hauv cov hmoov ua kom muaj hmoov thiab tshuaj khib, hauv kua nplaum kua thiab pleev xim, yuav muaj ib pab pawg tshwm sim, tsis tuaj yeem siv.
Dab tsi yog qhov ntsuas pom tseeb ntawmHPMC?
Hydroxypropyl cov ntsiab lus thiab viscosity, feem ntau cov neeg siv tau txhawj xeeb nrog ob ntu no.
Hydroxypropyl cov ntsiab lus yog qhov siab, dej khaws cia yog feem ntau zoo dua.
Viscosity, dej tuav, tab sis tsis paub meej) kuj zoo dua, thiab viscosity, hauv cov cement cug zoo dua siv qee qhov.
Ntau npaum li cas viscosity puas haum rau HPMC?
Lub luag haujlwm tseem ceeb tshaj plaws ntawm HPMC yog dej tuav, ua raws li thickening.
Putty hmoov feem ntau yog 100000 CPS tuaj yeem ua tau. Ntev npaum li lub taub dej rov qab yog qhov zoo, lub viscosity yog tsawg (70,000 Me nyhuv rau cov dej khaws cia.
Qhov yuav tsum tau nyob rau hauv kev txaws yog qee qhov siab dua, xav tau feem ntau 150 txhiab tsuas yog siv tau zoo.
Cov ntawv thov kua nplaum: Xav tau cov khoom lag luam tam sim ntawd, siab viscosity.
Lub Sijhawm Post: Apr-28-2024