Tsawg viscosity HPMC: HPMC 400 feem ntau yog siv rau tus kheej-leveling mortar, tab sis feem ntau tuaj.
Yog vim li cas: Lub viscosity tsawg, txawm hais tias cov dej tuav tsis zoo, tab sis cov qib yog qhov zoo, thiab cov mortar ntom yog siab.
Nruab nrab thiab qis viscosity:Hydroxypropyl methylcellulose yog ib qho khoom siv zooHPMC 20000-40000 feem ntau yog siv rau pobzeb nplaum, tus neeg sawv cev caulking, anti-cracking mortar, thermal rwb thaiv tsev sib txuas mortar, thiab lwm yam.
Yog vim li cas: zoo workability, tsawg dej ntxiv, siab mortar compactness.
1. Lub hom phiaj tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
——A: HPMC yog siv dav hauv cov khoom siv hauv tsev, txheej, hluavtaws cob, ceramics, tshuaj, khoom noj khoom haus, textiles, 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.
2. Muaj ntau ntau hom hydroxypropyl methylcellulose (HPMC), thiab qhov txawv ntawm lawv siv yog dab tsi?
—— Lus Teb: HPMC tuaj yeem muab faib ua hom tam sim thiab hom kub yaj. 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 hauv dej thiab tsis muaj kev sib cais tiag tiag. Tom qab li 2 feeb, lub viscosity ntawm cov kua maj mam nce, tsim ib pob tshab viscous colloid. Cov khoom siv hluav taws xob kub, thaum ntsib cov dej txias, tuaj yeem tawg sai sai hauv cov dej kub, thiab ploj hauv dej kub. Thaum qhov kub thiab txias poob rau qee qhov kub (peb lub tuam txhab cov khoom yog 65 degrees Celsius), viscosity maj mam tshwm kom txog rau thaum nws tsim pob tshab viscous colloid. 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.
3. Yuav ua li cas yog cov txheej txheem dissolution ntawm hydroxypropyl methylcellulose (HPMC)?
—— Lus Teb: Cov dej kub dissolution txoj kev: Txij li thaum HPMC tsis yaj nyob rau hauv dej kub, HPMC tuaj yeem sib cais hauv cov dej kub thaum pib, thiab tom qab ntawd yaj sai sai thaum txias. Ob txoj kev raug piav raws li hauv qab no:
1) Muab cov dej kub uas xav tau rau hauv lub thawv thiab ua kom kub txog li 70 ° C. 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.
2), ntxiv 1/3 los yog 2/3 ntawm cov dej uas yuav tsum tau rau hauv lub thawv, thiab ua kom sov rau 70 ° C, raws li txoj kev 1), disperse HPMC, npaj 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 stirring.
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. ]
4. Yuav ua li cas txiav txim qhov zoo ntawm hydroxypropyl methylcellulose (HPMC) yooj yim thiab intuitively?
—— Lus Teb: (1) Dawb: Txawm hais tias dawb tsis tuaj yeem txiav txim siab seb HPMC puas siv tau yooj yim, thiab yog tias lub teeb ci 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. (2) 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. (3) Transmittance: Muab hydroxypropyl methylcellulose (HPMC) tso rau hauv dej los tsim cov pob tshab colloid, thiab xyuas nws cov kis. Qhov siab dua qhov transmittance, qhov zoo dua, qhia tias muaj cov tshuaj insoluble tsawg dua hauv nws. Qhov permeability ntawm ntsug reactor feem ntau yog qhov zoo, thiab kab rov tav reactor yog qhov phem dua, tab sis nws tsis tuaj yeem hais tias qhov zoo ntawm cov reactor ntsug yog zoo dua li cov kab rov tav reactor, thiab muaj ntau yam uas txiav txim siab cov khoom zoo. (4) Lub ntiajteb txawj nqus tshwj xeeb: qhov loj dua qhov tshwj xeeb lub ntiajteb txawj nqus, qhov hnyav dua qhov zoo dua. Qhov tshwj xeeb lub ntiajteb txawj nqus yog loj, feem ntau vim hais tias cov hydroxypropyl cov ntsiab lus nyob rau hauv nws yog siab, thiab cov ntsiab lus hydroxypropyl yog siab, dej tuav yog zoo dua.
5. Tus nqi ntawm hydroxypropyl methylcellulose (HPMC) nyob rau hauv putty hmoov?
—— Lus Teb: Tus nqi ntawm HPMC siv nyob rau hauv kev siv tswv yim sib txawv nyob ntawm seb qhov kev nyab xeeb, qhov kub thiab txias, lub zos tshauv calcium zoo, cov mis ntawm putty hmoov thiab cov "zoo xav tau los ntawm cov neeg muas zaub". Feem ntau hais lus, nws yog nruab nrab ntawm 4 kg thiab 5 kg. Piv txwv li, feem ntau ntawm cov hmoov putty nyob rau hauv Beijing yog 5 kg; feem ntau ntawm cov hmoov putty hauv Guizhou yog 5 kg nyob rau lub caij ntuj sov thiab 4.5 kg nyob rau lub caij ntuj no;
6. Qhov viscosity tsim nyog ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
—— Teb: Putty hmoov feem ntau yog 100,000 yuan, thiab mortar xav tau ntau dua, thiab nws yooj yim siv 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. Ntawm chav kawm, viscosity siab dua, thiab cov txheeb ze dej tuav tau zoo dua. Thaum lub viscosity siab tshaj 100,000, cov nyhuv ntawm viscosity ntawm dej tuav tsis ntau.
7. Cov kev qhia tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
—— Teb: Hydroxypropyl cov ntsiab lus thiab viscosity, feem ntau cov neeg siv mob siab txog ob qhov ntsuas no. Qhov siab dua cov ntsiab lus hydroxypropyl, qhov dej tuav tau zoo dua. High viscosity, dej tuav, kuj (tsis yog kiag li) zoo dua, thiab siab viscosity, zoo dua siv hauv cement mortar.
8. Cov ntaub ntawv tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
—— A: Cov ntaub ntawv tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC): cov paj rwb refined, methyl chloride, propylene oxide, lwm yam raw khoom muaj xws li flake alkali, acid, toluene, isopropanol, thiab lwm yam.
9. Lub luag haujlwm tseem ceeb ntawm HPMC yog dab tsi hauv kev siv cov hmoov putty, thiab puas muaj chemistry?
—— Lus Teb: HPMC muaj peb txoj haujlwm ntawm thickening, dej tuav thiab kev tsim kho hauv cov hmoov putty. Thickening: Cellulose tuaj yeem ua kom tuab kom tshem tawm, ua kom cov tshuaj sib xws thiab sib xws, thiab tiv thaiv sagging. Kev tuav dej: Ua kom cov hmoov putty qhuav maj mam, thiab pab cov tshuaj tiv thaiv cov hmoov tshauv calcium hauv qab dej. Kev tsim kho: Cellulose muaj cov nyhuv lubricating, uas tuaj yeem ua rau cov hmoov putty muaj kev ua haujlwm zoo. HPMC tsis koom nrog cov tshuaj tiv thaiv tshuaj thiab tsuas yog ua lub luag haujlwm pabcuam. Ntxiv dej rau cov hmoov putty thiab muab tso rau ntawm phab ntsa yog cov tshuaj tiv thaiv. Vim yog tsim cov tshuaj tshiab, muab cov hmoov putty rau ntawm phab ntsa tawm ntawm phab ntsa, zom rau hauv cov hmoov, thiab siv dua. Nws yuav tsis ua haujlwm, vim tias cov tshuaj tshiab (calcium carbonate) tau tsim. ) nce. Cov ntsiab lus tseem ceeb ntawm cov hmoov tshauv calcium hmoov yog: sib tov ntawm Ca (OH) 2, CaO thiab ib qho me me ntawm CaCO3, CaO + H2O = Ca (OH) 2 -Ca (OH) 2 + CO2 = CaCO3↓ + H2O Ash calcium. Hauv dej thiab huab cua Raws li kev ua ntawm CO2, calcium carbonate yog tsim, thaum HPMC tsuas khaws cov dej thiab pab cov tshuaj tiv thaiv zoo ntawm cov tshauv calcium, thiab tsis koom nrog cov tshuaj tiv thaiv nws tus kheej.
10. HPMC yog non-ionic cellulose ether, yog li dab tsi yog non-ionic?
- Teb: Nyob rau hauv layman cov ntsiab lus, non-ions yog cov khoom uas tsis ionize nyob rau hauv dej. Ionization yog hais txog cov txheej txheem uas ib qho electrolyte dissociated mus rau dawb-tsav ions nyob rau hauv ib qho hnyav hnyav (xws li dej, cawv). Piv txwv li, sodium chloride (NaCl), ntsev noj txhua hnub, yaj hauv dej thiab ionizes los tsim kev ywj pheej ntawm sodium ions (Na +) uas tau them nyiaj zoo thiab chloride ions (Cl) uas tsis zoo. Ntawd yog, thaum HPMC muab tso rau hauv dej, nws tsis cuam tshuam rau hauv ions them, tab sis muaj nyob rau hauv daim ntawv ntawm molecules.
Post lub sij hawm: Oct-17-2022