Tsawg viscosity: 400 feem ntau yog siv rau tus kheej-leveling mortar, tab sis nws feem ntau yog imported.
Yog vim li cas: Tsawg viscosity, dej tsis zoo, tab sis zoo leveling zog, siab mortar ntom.
Nruab nrab thiab tsis tshua muaj viscosity: 20000-40000 yog tsuas yog siv rau cov pobzeb nplaum, tus neeg sawv cev caulking, anti-crack mortar, thermal insulation bonding mortar, thiab lwm yam.
Yog vim li cas: kev ua haujlwm zoo, tsis muaj dej ntxiv, thiab cov tshuaj khib nyiab siab.
1. Dab tsi yog qhov tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC)?
——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 kev siv. Tam sim no, feem ntau cov khoom siv hauv tsev yog qib kev tsim kho. Nyob rau hauv kev tsim kho qib, putty hmoov yog siv ntau npaum li cas, li 90% yog siv rau putty hmoov, thiab tus so yog siv rau cement mortar thiab kua nplaum.
2. Muaj pes tsawg hom hydroxypropyl methylcellulose (HPMC) muaj? Lawv siv dab tsi?
——A: HPMC tuaj yeem muab faib ua hom instant thiab kub yaj hom. Cov khoom tam sim no tawg sai sai hauv dej txias thiab ploj mus hauv dej. Cov kua tsis muaj viscosity nyob rau lub sijhawm no vim tias HPMC tsuas yog tawg mus rau hauv dej thiab tsis yaj tiag tiag. Tom qab li 2 feeb, lub viscosity ntawm cov kua maj mam nce thiab pob tshab viscous colloid yog tsim. Cov khoom kub-soluble tuaj yeem tawg sai sai hauv dej kub thiab ploj hauv dej kub thaum ntsib dej txias. 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 thaum lub pob tshab viscous colloid tsim. Kub yaj hom tsuas yog siv rau putty hmoov thiab mortar. Hauv cov kua nplaum thiab pleev xim, clumping yuav tshwm sim thiab siv tsis tau. Hom tam sim no muaj ntau yam kev siv. Nws tuaj yeem siv rau putty hmoov, mortar, kua kua nplaum, thiab xim tsis muaj contraindications.
3. Yuav ua li cas yog txoj kev dissolving hydroxypropyl methylcellulose (HPMC)?
—— Lus Teb: Cov txheej txheem dej kub dissolution: Txij li HPMC yog insoluble hauv dej kub, HPMC tuaj yeem sib npaug hauv cov dej kub thaum pib thiab yaj sai sai tom qab txias. Ob txoj kev raug piav qhia hauv qab no:
1) Muab cov dej kub uas xav tau rau hauv lub thawv thiab ua kom sov li ntawm 70 ℃. Maj mam ntxiv hydroxypropyl methylcellulose nrog qeeb stirring. Pib HPMC ntab rau saum npoo dej, tom qab ntawd maj mam tsim cov slurry, thiab txias nrog nplawm.
2). Ntxiv 1/3 los yog 2/3 ntawm cov dej xav tau rau hauv lub thawv, ua kom sov rau 70 ° C, disperse HPMC raws li txoj kev hauv 1), thiab npaj cov dej kub slurry; tom qab ntawd ntxiv cov dej txias ntxiv rau cov dej kub slurry. slurry hauv dej, do thiab txias qhov sib tov.
Txoj kev sib xyaw hmoov: Sib tov HPMC hmoov nrog ntau ntau ntawm lwm cov hmoov hmoov, sib tov kom huv si nrog rab diav, thiab tom qab ntawd ntxiv dej kom yaj. Lub sijhawm no, HPMC tuaj yeem yaj thiab yuav tsis sib koom ua ke, vim tias tsuas muaj HPMC me ntsis hauv txhua feem. Me ntsis ces kaum. Cov hmoov dissolves tam sim ntawd thaum sib cuag nrog dej. —— Putty hmoov thiab mortar manufacturers txais txoj kev no. Hydroxypropyl methylcellulose (HPMC) yog siv los ua cov thickener thiab dej-retaining tus neeg sawv cev nyob rau 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 txiav txim siab seb HPMC puas siv tau yooj yim, yog tias cov khoom ci ntxiv thaum lub sijhawm tsim khoom, nws yuav cuam tshuam rau nws qhov zoo. Txawm li cas los xij, cov khoom lag luam zoo feem ntau muaj cov xim zoo nkauj. (2) Fineness: Qhov zoo ntawm HPMC feem ntau yog 80 mesh thiab 100 mesh, nrog 120 mesh tsawg dua. Feem ntau ntawm HPMC tsim nyob rau hauv Hebei yog 80 mesh. Qhov zoo dua qhov zoo dua. (3) Lub teeb xa hluav taws xob: Muab hydroxypropyl methylcellulose (HPMC) rau hauv dej los tsim cov pob tshab colloid, thiab xyuas nws lub teeb xa hluav taws xob. Qhov siab dua lub teeb xa hluav taws xob, qhov zoo dua, qhia tias muaj cov khoom tsis zoo hauv sab hauv. Cov huab cua permeability ntawm ntsug reactors feem ntau zoo dua li cov kab rov tav reactors, tab sis nws tsis tuaj yeem hais tias qhov zoo ntawm ntsug reactors zoo dua li cov kab rov tav reactors. 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 thiab hnyav dua, qhov zoo dua. Qhov tshwj xeeb lub ntiajteb txawj nqus feem ntau yog vim muaj cov ntsiab lus siab hydroxypropyl hauv nws. Qhov siab dua cov ntsiab lus hydroxypropyl, qhov dej tuav tau zoo dua.
5. Qhov ntau npaum li cas ntawm hydroxypropyl methylcellulose (HPMC) hauv putty hmoov?
—— Teb: Qhov ntau npaum li cas ntawm HPMC nyob rau hauv daim ntawv thov tiag tiag txawv raws li kev nyab xeeb, qhov kub thiab txias, cov hmoov tshauv hauv zos calcium zoo, thiab cov khoom siv mis. ty hmoov thiab "cov neeg siv khoom xav tau zoo". Feem ntau hais lus, nws yog nruab nrab ntawm 4kg thiab 5kg. Piv txwv li, feem ntau putty hmoov nyob rau hauv Beijing yog 5 kg; feem ntau putty hmoov nyob rau hauv Guizhou yog 5 kg nyob rau hauv lub caij ntuj sov thiab 4.5 kg nyob rau hauv lub caij ntuj no;
6. Qhov viscosity tsim nyog ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
—— Teb: Putty hmoov feem ntau raug nqi 100,000 yuan, thiab mortar xav tau ntau dua, yog li 150,000 yuan txaus. Thiab qhov tseem ceeb tshaj plaws ua haujlwm ntawm HPMC yog dej tuav, ua raws li thickening. Nyob rau hauv cov hmoov putty, tsuav yog nws muaj dej tuav tau zoo thiab qis dua viscosity (70,000-80,000), nws zoo. Tau kawg, qhov siab dua qhov viscosity, qhov zoo dua qhov txheeb ze dej tuav. Thaum lub viscosity siab tshaj 100,000, lub viscosity muaj me ntsis cuam tshuam rau cov dej tuav.
7. Cov kev qhia tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
——A: Hydroxypropyl cov ntsiab lus thiab viscosity, cov neeg siv feem ntau txhawj xeeb txog ob qhov ntsuas no. Qhov siab dua cov ntsiab lus hydroxypropyl, qhov dej tuav tau zoo dua. Nrog cov viscosity siab, dej tuav yog qhov zoo (tsis yog kiag li) zoo dua, thiab nrog cov viscosity siab, nws zoo dua siv hauv cov 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 caustic soda, acid, toluene, isopropyl cawv, thiab lwm yam.
9. Lub luag haujlwm tseem ceeb ntawm HPMC yog dab tsi hauv kev siv cov hmoov putty? Nws puas muaj tshuaj lom neeg?
—— Lus Teb: HPMC muaj peb lub luag haujlwm tseem ceeb ntawm kev ua kom tuab, dej tuav thiab kev tsim kho hauv cov hmoov putty. Thickening: Cellulose tuaj yeem ua kom tuab, ua kom cov tshuaj sib xws thiab tiv thaiv sagging. Kev tuav dej: Ua kom cov hmoov putty qhuav maj mam thiab pab cov tshuaj tiv thaiv ntawm grey calcium nyob rau hauv qhov kev txiav txim ntawm dej. Kev tsim kho: Cellulose muaj cov nyhuv lubricating thiab tuaj yeem ua rau cov hmoov putty muaj kev ua haujlwm zoo. HPMC tsis koom nrog cov tshuaj tiv thaiv thiab tsuas yog ua lub luag haujlwm pabcuam. Thaum cov hmoov putty ntxiv rau dej thiab siv rau ntawm phab ntsa, cov tshuaj tiv thaiv yuav tshwm sim. Raws li cov khoom tshiab tsim, cov hmoov putty rau ntawm phab ntsa raug tshem tawm ntawm phab ntsa thiab hauv av ua hmoov ua ntej siv. Qhov no tsis ua haujlwm vim tias muaj cov khoom tshiab (calcium carbonate) tau tsim. ) nce. Cov khoom tseem ceeb ntawm grey 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 Grey calcium. yaj hauv dej thiab cua CO2 Raws li kev ua ntawm calcium carbonate, HPMC tsuas yog khaws cov dej thiab pab cov calcium grey kom hnov qab zoo dua, thiab tsis koom nrog cov tshuaj tiv thaiv nws tus kheej.
10. HPMC yog non-ionic cellulose ether, yog li dab tsi yog ib qho uas tsis yog-ionic?
A: Nyob rau hauv cov nqe lus ntawm layman, non-ions yog cov khoom uas tsis ionize nyob rau hauv dej. Ionization yog cov txheej txheem los ntawm cov electrolytes dissociate mus dawb do ions nyob rau hauv tej yam hnyav (xws li, dej, cawv). Piv txwv li, sodium chloride (NaCl), ntsev noj txhua hnub, dissolves nyob rau hauv dej thiab ionizes, ua dawb mobile zoo nqi sodium ions (Na +) thiab tsis zoo nqi chloride ions (Cl). 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 molecular.
Post lub sij hawm: Feb-06-2024