Txij li cov khoom ntawm hydroxypropyl methylcellulose zoo ib yam li lwm cov dej-soluble ethers, nws tuaj yeem siv rau hauv emulsion txheej thiab dej-soluble resin txheej txheej ua cov yeeb yaj kiab tsim, thickener, emulsifier thiab stabilizer, thiab lwm yam. zoo abrasion tsis kam. Homogeneous txheej thiab adhesion, thiab txhim kho nto nro, stability rau acids thiab bases, thiab compatibility nrog hlau pigments.
Txij li thaum HPMC muaj cov ntsiab lus siab dua li MC, nws kuj muaj peev xwm tiv taus cov kab mob ntau dua li lwm cov cellulose ethers, thiab yog li siv tau los ua cov thickening tus neeg sawv cev rau aqueous emulsion txheej. HPMC muaj viscosity cia ruaj khov thiab nws zoo heev dispersibility, yog li HPMC tshwj xeeb tshaj yog haum raws li ib tug dispersant nyob rau hauv emulsion txheej.
Daim ntawv thov ntawm hydroxypropyl methyl cellulose hauv kev lag luam txheej yog raws li hauv qab no.
1.various viscosity HPMC configuration xim hnav tsis kam, kub tsis kam, tiv thaiv kab mob piav qhia, ntxuav tsis kam thiab ruaj khov rau cov kua qaub thiab cov hauv paus zoo dua; Nws tuaj yeem siv los ua cov xim pleev xim uas muaj methanol, ethanol, propanol, isopropyl cawv, ethylene glycol, acetone, methyl ethyl ketone los yog diketone cawv thickener; HPMC formulated emulsified txheej muaj kev ntub dej zoo heev; HPMC dua HEC thiab EHEC thiab CMC raws li HPMC muaj txiaj ntsig zoo dua HEC thiab EHEC thiab CMC ua cov xim pleev xim.
2.Highly hloov hydroxypropyl methyl cellulose muaj kev tiv thaiv kab mob zoo dua li kev hloov qis, thiab muaj viscosity zoo dua nyob rau hauv polyvinyl acetate thickeners. Lwm cov cellulose ethers nyob rau hauv cia vim cov saw degradation ntawm cellulose ether thiab ua rau cov txheej viscosity txo.
3.paint stripper tuaj yeem ua dej-soluble HPMC (qhov twg methoxy yog 28% mus rau 32%, hydroxypropoxy yog 7% mus rau 12%), dioxymethane, toluene, paraffin, ethanol, methanol configuration, nws yuav siv tau rau upright nto, nrog qhov xav tau viscosity thiab volatility. Cov xim pleev xim no tshem tawm cov xim pleev xim rau feem ntau, cov kua roj vanish, enamels, thiab qee yam epoxy esters, epoxy amides, catalyzed epoxy amides, acrylates, thiab lwm yam. Ntau cov xim tuaj yeem tev tawm hauv ob peb feeb, qee cov xim xav tau 10 ~ 15min lossis ntau dua, qhov no xim stripper yog tshwj xeeb tshaj yog haum rau cov ntoo nto.
4. Cov xim dej emulsion tuaj yeem tsim los ntawm 100 qhov chaw ntawm inorganic lossis organic pigment, 0.5 ~ 20 feem ntawm cov dej-soluble alkyl cellulose lossis hydroxyalkyl cellulose thiab 0.01 ~ 5 feem ntawm polyoxyethylene ether lossis ether ester. Piv txwv li, cov xim yog tau los ntawm kev sib tov 1.5 feem ntawm HPMC, 0.05 qhov chaw ntawm polyethylene glycol alkyl phenyl ether, 99.7 qhov chaw ntawm titanium dioxide thiab 0.3 qhov chaw ntawm carbon dub. Cov sib tov yog ces nplawm nrog 100 qhov chaw ntawm 50% khoom polyvinyl acetate kom tau cov txheej, thiab tsis muaj qhov sib txawv ntawm cov txheej txheej qhuav uas yog siv los ntawm daim ntawv tuab thiab txhuam nws maj mam nrog txhuam.
Post lub sij hawm: May-20-2022