HPMC HydroxyPropyl methyl cellulose thiab xis mas piv?
Cov tshuaj tiv thaiv dej ntawm cov tshuaj pov tseg, nws cov yam ntxwv nyob ntawm cov khoom siv raw: pob zeb khov kho ua kom khib nyiab)HydroxyPropyyl Methyl cellulose7-9, silicon carbide hmoov 40-45, calcium hydroxide hmoov 10-12, cov ntaub ntawv hloov pauv ntawm cov hmoov av 40-44, cov khoom siv qhuav cov hmoov av roj av 40-6, dej 600-650; Lub tshuab hluav taws xob ua haujlwm ntawm cov khoom lag luam no muaj kev tiv thaiv zoo, muaj zog tiv thaiv tshav ntuj, ua kom zoo heev noo noo, tawg tsis kam, tiv thaiv poob. Niaj hnub no peb yuav tham txog qhov viscrot ntawm hydroxypropal methylropy cellulose aqueous kua yog txhua yam nyob rau hauv yam dab tsi? Cia peb kawm nws.
1. Tus txheeb ze lub cev hnyav, qhov kub ntawm cov aqueous, txiav tus nqi thiab qauv sim ntawm cellulose ether; 2. Qhov siab dua lub khob hloov cua kub, qhov ntau dua cov txheeb ze lub cev hnyav, lub viscosity ntawm kev daws teeb meem siab dua; 3. Qhov siab dua cov ntsiab lus ntawm cellulose ether, ntau dua cov kev ua kom haum xeeb, tiv thaiv kev sib xyaw ua ke ntawm cov cement ntawm cov cement; 4. Zoo li feem ntau ntawm cov kev daws teeb meem, qhov viscosity yuav kuj poob nrog qhov nce ntxiv nrog qhov kub thiab ntxiv rau cov ntsiab lus ntawm cellulose ether, ntau dua qhov kev phom sij ether, ntau dua qhov kev phom sij ether, ntau dua qhov kev phom sij ether, ntau dua qhov kev phom sij ether, ntau dua qhov kev phom sij ntawm qhov kub; Ib qho ntxiv, cov nyhuv tuab tuab kuj txawv txav ntxiv raws li cov dej siv rau epoxy MAAs.
HydroxyPropy cellulose aqueous mauv taus ntawm cov khoom siv Aposule, tab sis yog tias lub ntsiab lus tseem ceeb, yuav ua rau lub epoxy Meej ces yog cov khoom siv Apoxy, yuav ua rau lub epoxy xiss, yuav tsim kev puas tsuaj rau epoxy xis ntxhib cov khoom siv tam sim ntawd kev ua kom ua tau zoo tam sim ntawd kev ua kom ua tiav. Raws li rau qee qhov kev sib khib tus kheej nrog kev ua kom zoo, lub viscosity ntawm cellulose ether yuav tau teev tseg kom qis dua.
Cellulose ethous Cov tshuaj aqueous yog lub cev pseudoplastic lub cev, peb nyob rau tom qab theem ntawm cov shear tus nqi yog qhov ntau dua, lub viscosity yog me dua.
Yog li ntawd, kom suav tau yog: cov cohesion ntawm xis nyob ntawm cov khoom siv sab nraud, tab sis cov tshuaj muaj yees muaj ntau ntxiv, cov yam ntxwv dej yuav tshwm sim pseudoplast kua cov yam ntxwv.
Dej khaws cia los ntawm hydroxypropyl cellulose yog ib qho ntawm cov khoom tseem ceeb ntawm hydroxyprropy cellulose cellulose. Cov Evaporation tus nqi ntawm cov dej sib xyaw ua ke hauv cov khoom sib xyaw thiab cov khoom siv plaster yog cuam tshuam los ntawm cov pa kub, kub thiab siab tus nqi. Yog li ntawd, nyob rau lub caij sib txawv, ntxiv hydroxypropyl cellulose tib tus nqi ntawm cov khoom lag luam dej muaj qee qhov sib txawv.
Feem ntau, qhov ntau dua cov viscosity ntawm hydroxypropy cellulose yog, qhov kev phom sij ntawm cov dej tawm yuav raug txo qis dua 100,000 MPa. s. Thaum lub viscosity ntawm hydroxypropyl cellulose tshaj 100,000, dej ua kom zoo dua los ntawm hydroxypropyl methyl cellulose.
Hauv cov txheej txheem kev tsim kho, cov dej khaws cov nyhuv khaws cia ntawm slurry tuaj yeem hloov kho los ntawm hydroxypropyl cellulose. HydroxyPropy cell cov tshuaj cellulose tuaj yeem daws tau qhov teeb meem ntawm dej khaws cia nyob rau hauv txuas ntxiv kub. Nyob rau hauv lub caij kub txuas ntxiv, tshwj xeeb tshaj yog nyob rau thaj chaw sov thiab kev tsim kho ntawm lub hnub ci, zoo nkauj HydroxyPropyl cellulose yuav tsum tau txhim kho cov dej tuav ntawm cov slurry.
Zoo siab ntawm hydroxypropyl cellulose, nws muaj peev xwm tsim cov metyl aldalret pab pawg ntawm cov huab cua sov los ntawm cov pa dej evaporation, tom qab ntawd cov pa roj hmab ua ke
Zoo siab ntawm hydroxypropyl cellulose tuaj yeem haum cov tshuaj khib nyiab, thiab lav cov khoom siv roj av, thiab tag nrho cov khoom siv ua kom zoo nkauj, thiab tag nrho cov khoom siv roj av ntawm cov khoom siv raw compressively lub zog thiab tensile lub zog. Hauv kev tsim kho cov txheej txheem siab rau lub caij ntuj sov siab, yuav tsum tau ua rau muaj lub ntsej muag thiab tsis txaus ntseeg, yuav ua rau muaj kev tsis txaus siab, yuav ua rau muaj lub ntsej muag tsis txaus ntseeg Raws li qhov ntsuas kub thiab txias, tus nqi ntawm hydroxypropyl cellulose tuaj yeem txo qis qis thiab tib cov nyhuv retentely tau ua tiav.
Yog hais tias cellulose ether yog tsis ntxiv, cov chromatography ntawm cov xis khov kho tsis tau, ua rau muaj chlum colle tsis tuaj yeem nyuaj primed thiab tau txais zoo adhesion. Nyob rau tib lub sijhawm, ntxiv ntawm cellulose ether ua cement colle muaj qhov ua kom zoo nkauj uas muaj kev sib xyaw ua kom zoo thiab txhim kho cov kab cug sib xyaw ua ke ntawm xis.
1, HydroxyPropyyl methyl cellulose particle
Lub particle me me ntawm cellulose ua kom nws solubility. Lub cell tag nrho ether yog, lub nrawm dua nws cov kev txiav txim siab hauv dej thiab ntau dua nws cov dej khaws dej siab dua. Yog li ntawd, qhov me me ntawm cellulose ether yuav tsum suav nrog hauv kev tshawb nrhiav ntawm ib qho ntawm nws cov yam ntxwv. Feem ntau, cellulose ovher particle loj ntawm 80 mesh raws li.
2, HydroxyPropyyl methyl cellulose qhuav tsis muaj tus nqi nqus
Qhuav manic tsis muaj tus nqi nqus dej, hais txog qhov tseeb ntawm qhuav cellulose ether, poob ntawm cov qauv tshuaj lom neeg zoo feem pua ntawm cov khoom siv. Rau qee yam zoo ntawm cellulose ether nyob rau hauv lub qhuav tsis muaj qhov cuam tshuam ntawm kev siv cov nyiaj tau los hauv qis, tab sis kuj txhim kho tus nqi yuav khoom. Feem ntau cov cellulose qhuav ether tsis muaj nqi nqus nqus yuav tsum tsis pub tshaj 5.0%.
3, HydroxyPropyyl methyl cellulose potassium thiocyanate tshauv
Rau qee qhov zoo ntawm cellulose ether hauv cov tuam txhab tshauv yog qhov cuam tshuam ntawm cov tuam txhab hmoov av, yuav txo cov ntsiab lus tshauv yog qhov kev txiav txim siab tseem ceeb ntawm nws tus kheej index tus nqi.
4, HydroxyPropyyl methyl cellulose viscosity
HydroxyPropy cellulose dej khaws cia thiab cov nyhuv thuv yog tus yuam sij rau ntxiv cem shot cellulose cellulose cellulose cellulose cellulose encosity thiab incorporation.
5, HydroxyPropyl methyl cellulose py tus nqi
Lub viscosity ntawm hydroxypropy cov khoom lag luam me me ntawm cov khoom kub siab dua lossis tom qab khaws cia rau lub sijhawm ntev, tshwj xeeb yog tus nqi py yuav tsum tau txwv. Nws yog feem ntau tau raws li cov pH nqi qeb ntawm cellulose ether yuav tsum ua haujlwm li 5-9.
6. Hloov chaw ntawm HydroxyPropyl Methyl cellulose
Qhov zoo thiab qhov tsis zoo ntawm kev hloov cov kev cuam tshuam ntawm hydroxypropyl cellulose tuaj yeem cuam tshuam ncaj qha rau cov nyhuv hauv tsev. Lub Koom Haum Thawj Yam uas ua mob rau kev hloov pauv ntawm cellulose ether yog
1) qhov zoo ntawm cov ntaub ntawv raw; (2) qhov tseeb ntawm cov khoom noj; (3) Kev npaj thev naus laus zis; (4) cov kuab tshuaj organic kev npaj; (5) Qhov tseeb ntawm zhonghe.
Raws li cov ntawv thov ua tiav tiag tiag, kev hloov pauv ntawm cellulose ether yuav tsum tsis pub tsawg tshaj 80%.
7, HydroxyPropyl methyl cellulose xav tias kub
HydroxyPropy cellulose hauv cov khoom siv xis nyob ua kom cov nplaum, yog li cov dej tawm ntawm hydroxyprropy cellulose. Qhov kub yog siv los txiav txim rau hom thiab cov lus qhia txog cellulose ether, thiab qib hloov ntawm cellulose ether yog cuam tshuam.
8. Ib qho ntxiv, ntsev thiab cov seem yuav ua kom muaj kev phom sij kub ntawm cov kua nplaum. Thaum ntsuas kub ntawm cov aqueous daws, cov tshuaj polymer fiber ntau tsis muaj dej hauv aqueous. Thaum lub ntsiab lus nplaum tau mus txog, cov polymer yog qhuav thiab cov nplaum tsim tawm. Yog li ntawd, kev ua haujlwm kub ntawm cov lus cem cov tswv cuab feem ntau yog hauv qab daim tseem kub kua nplaum kub. Nyob rau hauv tus txheej txheem no, qis dua qhov kub, ntau dua qhov viscosity, thiab tus tseem ceeb tshaj qhov tshwm sim tiag tiag ntawm viscosification thiab dej khaws cia.
Lub Sijhawm Post: Jun-09-2022