1. Muaj ntau ntau hom hydroxypropyl methylcellulose HPMC, thiab qhov sib txawv ntawm lawv siv yog dab tsi?
Teb: Hydroxypropyl methylcellulose HPMC tuaj yeem muab faib ua hom instant thiab kub-melt hom. Cov khoom lag luam tam sim no tawg sai sai hauv dej txias thiab ploj mus rau hauv dej. Lub sijhawm no, cov kua dej tsis muaj viscosity, vim tias HPMC tsuas yog tawg mus rau hauv dej, tsis muaj qhov yaj tiag tiag. Tom qab li 2 feeb, lub viscosity ntawm cov kua maj mam nce, tsim ib pob tshab viscous colloid. Cov khoom kub dissolving, thaum ntsib dej txias, tuaj yeem tawg sai sai hauv dej kub thiab ploj mus hauv dej kub. Thaum qhov kub thiab txias poob rau qee qhov kub, qhov viscosity maj mam tshwm kom txog thaum lub pob tshab viscous colloid tsim. Hom kub-melt tsuas yog siv rau hauv cov hmoov putty thiab mortar. Hauv cov kua nplaum thiab pleev xim, qhov tshwm sim clumping yuav tshwm sim thiab siv tsis tau. Hom instant muaj ntau yam kev siv. Nws tuaj yeem siv rau hauv cov hmoov nplej thiab mortar, nrog rau cov kua nplaum thiab xim, tsis muaj contraindications.
2. Lub hom phiaj tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
A: HPMC tau siv dav hauv cov khoom siv hauv tsev, txheej txheej, hluavtaws cob, ceramics, tshuaj, khoom noj khoom haus, textile, kev ua liaj ua teb, tshuaj pleev ib ce, luam yeeb thiab lwm yam lag luam. HPMC tuaj yeem muab faib ua: qib kev tsim kho, qib zaub mov thiab qib tshuaj raws li lub hom phiaj. Tam sim no, feem ntau ntawm cov khoom siv hauv tsev yog qib kev tsim kho. Nyob rau hauv kev tsim kho qib, tus nqi ntawm cov hmoov putty yog loj heev, li ntawm 90% yog siv rau putty hmoov, thiab tus so yog siv rau cement mortar thiab kua nplaum.
3. Yuav ua li cas yog txoj kev dissolving ntawm hydroxypropyl methylcellulose HPMC?
Teb: Cov dej kub dissolution txoj kev: Txij li thaum HPMC tsis yaj nyob rau hauv dej kub, HPMC yuav uniformly dispersed nyob rau hauv dej kub nyob rau hauv thawj theem, thiab ces yaj sai sai thaum txias. Ob txoj kev raug piav raws li hauv qab no:
1), ntxiv 1/3 lossis 2/3 ntawm qhov xav tau ntawm cov dej hauv lub thawv, thiab ua kom sov rau 70 ° C, raws li txoj kev 1), disperse HPMC, npaj cov dej kub slurry; tom qab ntawd ntxiv cov dej txias ntxiv rau cov dej kub hauv cov slurry, qhov sib tov yog txias tom qab nplawm.
Txoj kev sib xyaw hmoov: Sib tov HPMC hmoov nrog ntau ntawm lwm cov hmoov hmoov, sib tov kom huv si nrog lub tov khoom, thiab tom qab ntawd ntxiv dej kom yaj, ces HPMC tuaj yeem yaj nyob rau lub sijhawm no yam tsis muaj clumping ua ke, vim tias tsuas muaj HPMC me ntsis hauv txhua qhov. me me ces kaum. Cov hmoov yuav yaj tam sim ntawd hauv kev sib cuag nrog dej. —— Txoj kev no yog siv los ntawm putty hmoov thiab mortar manufacturers. [Hydroxypropyl methylcellulose (HPMC) yog siv los ua thickener thiab dej-retaining tus neeg saib xyuas hauv putty hmoov mortar.
2), muab cov dej kub uas yuav tsum tau muab tso rau hauv lub thawv, thiab kub kom txog li 70 ℃. Cov hydroxypropyl methylcellulose tau maj mam ntxiv nrog qeeb nplawm, pib lub HPMC ntab rau saum npoo dej, thiab tom qab ntawd maj mam tsim cov slurry, uas tau txias nrog nplawm.
4. Yuav ua li cas txiav txim qhov zoo ntawm hydroxypropyl methylcellulose (HPMC) yooj yim thiab intuitively?
Teb: (1) Lub ntiajteb txawj nqus tshwj xeeb: qhov loj dua qhov tshwj xeeb lub ntiajteb txawj nqus, qhov hnyav dua qhov zoo dua. loj, feem ntau yog vim
(2) Whiteness: Txawm hais tias dawb tsis txiav txim siab seb HPMC puas siv tau yooj yim, thiab yog tias tus neeg sawv cev dawb ntxiv rau hauv cov txheej txheem tsim khoom, nws yuav cuam tshuam rau nws qhov zoo. Txawm li cas los xij, feem ntau ntawm cov khoom zoo muaj cov xim zoo nkauj.
(3) Fineness: Qhov zoo ntawm HPMC feem ntau yog 80 mesh thiab 100 mesh, thiab 120 mesh tsawg dua. Feem ntau ntawm HPMC tsim nyob rau hauv Hebei yog 80 mesh. Qhov finer qhov fineness, qhov zoo nyob rau hauv dav dav.
(4) Transmittance: Muab hydroxypropyl methylcellulose (HPMC) nyob rau hauv dej los tsim ib pob tshab colloid, thiab xyuas nws transmittance. Qhov siab dua qhov transmittance, qhov zoo dua, qhia tau hais tias muaj tsawg insoluble tshuaj nyob rau hauv . Lub permeability ntawm ntsug reactors feem ntau zoo, thiab cov kab rov tav reactors yog phem dua, tab sis nws tsis tuaj yeem hais tias qhov zoo ntawm ntsug reactors zoo dua li cov kab rov tav reactors, thiab muaj ntau yam uas txiav txim siab qhov zoo ntawm cov khoom. Cov ntsiab lus hydroxypropyl hauv nws yog siab, thiab cov ntsiab lus hydroxypropyl yog siab, cov dej tuav tau zoo dua.
5. Cov kev qhia tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
Teb: Hydroxypropyl cov ntsiab lus thiab viscosity, feem ntau cov neeg siv saib xyuas txog ob qhov ntsuas no. Qhov siab dua cov ntsiab lus hydroxypropyl, qhov dej tuav tau zoo dua. Viscous, dej tuav, kuj (xws li
6. Qhov viscosity tsim nyog ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
Teb: Putty hmoov feem ntau yog 100,000 yuan, thiab mortar yog xav tau, thiab nws yog ib qho yooj yim mus use ntawm 150,000 yuan. Tsis tas li ntawd, lub luag haujlwm tseem ceeb tshaj plaws ntawm HPMC yog khaws cov dej, ua raws li cov thickening. Hauv cov hmoov putty, tsuav yog cov dej tuav tau zoo thiab cov viscosity qis dua (70,000-80,000), kuj tseem ua tau. Tau kawg, yog tias cov viscosity siab dua, cov txheeb ze dej tuav tau zoo dua. Thaum lub viscosity siab tshaj 100,000, cov nyhuv ntawm viscosity ntawm dej tuav tsis ntau. Yog lawm) kuj zoo dua, thiab cov viscosity siab, thiab nws yog qhov zoo dua los siv hauv cov cement mortar.
7. Cov ntaub ntawv tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
Teb: Cov ntaub ntawv tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC): refined paj rwb, methyl chloride, propylene oxide, lwm yam raw khoom muaj xws li flake alkali, acid, toluene, isopropanol, thiab lwm yam.
Post lub sij hawm: Sep-21-2022