Hydroxypropyl Methylcellulose HPMC kev paub

1. Lub hom phiaj tseem ceeb ntawm HPMC yog dab tsi?

Cov khoom no yog siv los ua cov thickener, dispersant, binder, excipient, roj-resistant txheej, muab tub lim, emulsifier thiab stabilizer hauv kev lag luam textile.Nws kuj yog siv dav hauv cov khoom siv hluavtaws, petrochemical, ceramic, ntawv, tawv, tshuaj, zaub mov thiab tshuaj pleev ib ce industries.

2. Lub luag haujlwm ntawm HPMC yog dab tsi hauv cov phab ntsa sab hauv putty hmoov?

HPMC muaj peb txoj haujlwm: putty hmoov rau sab hauv phab ntsa, thickening, dej-locking thiab kev tsim kho.Concentration: Methyl cellulose tuaj yeem ua kom muaj zog los ntawm cov dej ntws los yog cov kua dej kom muaj kev sib luag thiab ua haujlwm zoo ib yam thiab tiv thaiv kev ntws thiab dai.Locking dej: Cov phab ntsa sab hauv cov hmoov dries maj mam, thiab ntxiv cov txiv qaub calcium ntxiv yog xav txog kev siv dej.Kev tsim kho vaj tsev: Methyl cellulose muaj cov dej ntub dej, uas tuaj yeem ua rau cov phab ntsa sab hauv putty hmoov muaj cov qauv zoo engineering.HPMC tsis koom nrog kev hloov pauv ntawm tag nrho cov tshuaj, tab sis tsuas yog koom nrog kev rov ua dua tshiab.Sab hauv phab ntsa putty hmoov, rau ntawm phab ntsa, yog cov tshuaj hloov pauv, vim tias muaj cov tshuaj hloov pauv tshiab, cov hmoov txheej sab hauv phab ntsa tau muab tshem tawm ntawm phab ntsa, milled, thiab rov siv dua, Vim tias muaj cov tshuaj tshiab (calcium bicarbonate) tau tsim tawm. .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. Hauv dej thiab huab cua Raws li kev ua ntawm CO2, calcium carbonate yog tsim, thaum HPMC tsuas yog khaws cov dej thiab pab cov tshuaj tiv thaiv zoo ntawm cov calcium grey, thiab nws tsis koom nrog cov tshuaj tiv thaiv nws tus kheej.

3. Yuav ua li cas txiav txim qhov zoo ntawm HPMC yooj yim thiab intuitively?

(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, cov khoom zoo muaj cov xim zoo nkauj.(2) Fineness: Qhov zoo ntawm HPMC feem ntau yog 80 mesh thiab 100 mesh, 120 mesh tsawg dua, thiab HPMC feem ntau ua hauv Hebei yog 80 mesh.Qhov finer qhov fineness, qhov zoo nyob rau hauv dav dav.(3) Transmittance: Muab hydroxypropyl methylcellulose (HPMC) tso rau hauv dej los tsim cov pob tshab colloid, thiab saib nws cov transmittance.Qhov ntau dua qhov transmittance, qhov zoo dua, qhia tias muaj tsawg insolubles hauv..Lub permeability ntawm ntsug reactor feem ntau yog zoo, thiab kab rov tav reactor yog phem, tab sis nws tsis txhais hais tias qhov zoo ntawm ntsug reactor yog zoo dua li cov kab rov tav reactor.Cov khoom zoo tseem txiav txim siab los ntawm ntau yam.(4) Qhov Loj: Qhov loj dua qhov sib piv, qhov hnyav dua qhov zoo dua.Qhov tshwj xeeb siab yog feem ntau yog vim muaj cov ntsiab lus hydroxypropyl siab hauv nws, thiab siab dua cov ntsiab lus hydroxypropyl, qhov dej tuav tau zoo dua.

4. Dab tsi yuav tsum tau them sai sai rau thaum siv cov viscosity thiab kub ntawm HPMC?

Lub viscosity ntawm HPMC yog inversely proportional rau kub, uas yog, lub viscosity nce raws li qhov kub thiab txias.Peb feem ntau hais tias viscosity ntawm ib yam khoom yog hais txog qhov tshwm sim ntawm kev sim nws 2% aqueous tov ntawm qhov kub ntawm 20 degrees Celsius.Hauv kev siv tswv yim, nyob rau hauv cov cheeb tsam uas muaj qhov sib txawv ntawm qhov kub ntawm lub caij ntuj sov thiab lub caij ntuj no, nws yuav tsum tau muab sau tseg tias nws raug pom zoo kom siv cov viscosity tsawg nyob rau lub caij ntuj no, uas yog qhov zoo rau kev tsim kho.Txwv tsis pub, thaum kub qis, viscosity ntawm cellulose yuav nce, thiab tes yuav hnov ​​​​qhov hnyav thaum khawb.

5. Cov txheej txheem kev sib cais ntawm HPMC yog dab tsi?

Cov txheej txheem dej kub dissolution: Txij li HPMC tsis yaj 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).Tus nqi ntawm cov dej kub thiab rhuab mus txog 70 ° C.Maj mam ntxiv hydroxypropyl methylcellulose nrog qeeb nplawm, pib HPMC ntab saum npoo dej, thiab tom qab ntawd maj mam tsim cov slurry, thiab txias cov slurry nrog nplawm.2).Ntxiv 1/3 los yog 2/3 ntawm cov dej xav tau rau hauv lub thawv thiab kub rau 70 ° C.Raws li txoj kev ntawm 1), disperse HPMC los npaj cov dej kub slurry;tom qab ntawd ntxiv cov dej txias ntxiv rau cov dej kub Nyob rau hauv slurry, txias qhov sib tov tom qab stirring.Txoj kev sib xyaw hmoov: sib tov HPMC hmoov nrog ntau ntawm lwm cov khoom siv hmoov, sib tov kom huv si, thiab tom qab ntawd ntxiv dej kom yaj, ces HPMC tuaj yeem yaj nyob rau lub sijhawm no yam tsis muaj clumping thiab agglomerating, vim hais tias txhua lub ces kaum me me, tsuas muaj. me ntsis ntawm HPMC Cov hmoov yuav yaj tam sim ntawd thaum nws ntsib dej.-Putty hmoov thiab mortar manufacturers siv txoj kev no.[Hydroxypropyl methyl cellulose (HPMC) yog siv los ua cov thickener thiab dej-retaining tus neeg sawv cev nyob rau hauv putty hmoov mortar.]

6. Dab tsi yog qhovkoob tshuajntawm HPMC ntxiv rau hauv cov hmoov putty?

Tus nqi ntawm HPMC siv rau hauv daim ntawv thov tiag tiag txawv nyob ntawm qhov kev nyab xeeb, qhov kub thiab txias, cov hmoov tshauv calcium hauv zos, cov mis ntawm cov hmoov putty, thiab "zoo xav tau los ntawm cov neeg siv khoom".Feem ntau hais lus, nws yog nruab nrab ntawm 4 kg thiab 5 kg.Piv txwv li, cov hmoov putty hauv kho kom zoo nkauj'> Beijing yog feem ntau 5 kg;putty hmoov nyob rau hauv Guizhou feem ntau yog 5 kg nyob rau hauv lub caij ntuj sov thiab 4.5 kg nyob rau hauv lub caij ntuj no;Yunnan tus nqi ntxiv yog me me, feem ntau 3 kg-4 kg thiab hais txog.