1. Kev lag luam roj av
Sodium carboxymethyl celluloseFeem ntau yog siv rau hauv kev rho roj, thiab nws yog siv rau hauv kev tsim cov av nkos kom nce viscosity thiab txo cov dej poob. Nws tuaj yeem tiv taus ntau yam kev ua qias tuaj ntawm cov ntsev thiab ua kom cov roj rov qab zoo. Sodium carboxymethyl hydroxypropyl cellulose (NACMHPC) thiab sodium carboxymethyl hydroxyethyl cellulose (NACMHEC) yog cov neeg sawv cev kho cov av nkos zoo thiab cov ntaub ntawv rau kev npaj cov kua dej tiav, nrog rau qhov siab slurrying thiab tsis kam ntsev, Kev ua haujlwm zoo tiv thaiv calcium, muaj peev xwm ua kom viscosity zoo, tiv taus kub (160 ℃). Nws yog qhov tsim nyog rau kev npaj cov kua dej drilling rau dej tshiab, dej hiav txwv thiab dej ntsev saturated. Nws tuaj yeem tsim rau hauv cov kua dej drilling ntawm ntau qhov ceev (103-127g / cm3) nyob rau hauv qhov hnyav ntawm calcium chloride, thiab nws muaj qee qhov viscosity thiab cov kua dej poob qis, nws qhov muaj peev xwm ua kom viscosity thiab txo cov kua dej poob zoo dua li hydroxyethyl cellulose, thiab nws yog ib qho khoom siv zoo rau kev ua kom cov roj ntau ntxiv.
Sodium carboxymethyl cellulose yog ib qho cellulose derivative siv dav hauv cov txheej txheem ntawm kev rho tawm roj. Nws yog siv rau hauv cov kua drilling, cov kua cementing, cov kua fracturing thiab txhim kho kev rov qab roj, tshwj xeeb tshaj yog hauv cov kua drilling. Nws feem ntau ua lub luag haujlwm ntawm kev txo cov kua poob thiab nce viscosity. Hydroxyethyl cellulose (HEC) yog siv los ua cov av nplaum thickening thiab stabilizing tus neeg sawv cev hauv cov txheej txheem ntawm kev drilling, kev ua tiav qhov dej thiab cementing. Piv nrog sodium carboxymethyl cellulose thiab guar gum, hydroxyethyl cellulose muaj cov nyhuv thickening zoo, muaj zog xuab zeb suspension, muaj peev xwm ntsev siab, tiv taus kub zoo, tsis tshua muaj kev sib xyaw, tsawg dua kua poob, thiab gel tawg. Block, tsawg residue thiab lwm yam ntxwv, tau siv dav.
2. Kev Tsim Kho, Kev Lag Luam Xim
Sodium carboxymethyl cellulose siv tau ua tus neeg tiv thaiv, tus neeg sawv cev khaws dej, tus neeg ua kom tuab thiab tus neeg khi rau kev tsim kho masonry thiab plastering mortar admixtures, thiab siv tau ua plaster, mortar thiab cov khoom siv hauv av rau gypsum puag thiab cement puag Nws yog siv ua dispersant, tus neeg sawv cev khaws dej thiab thickener. Ib qho tshwj xeeb masonry thiab plastering mortar admixture ua los ntawm carboxymethyl cellulose, uas tuaj yeem txhim kho kev ua haujlwm, kev khaws dej thiab kev tawg ntawm mortar, thiab zam kev tawg thiab voids hauv phab ntsa thaiv. nruas. Cov ntaub ntawv kho kom zoo nkauj ntawm lub tsev Cao Mingqian thiab lwm tus tau ua cov khoom siv kho kom zoo nkauj ntawm lub tsev ib puag ncig los ntawm methyl cellulose. Cov txheej txheem tsim khoom yooj yim thiab huv si. Nws tuaj yeem siv rau cov phab ntsa zoo thiab cov pob zeb pob zeb, thiab kuj tuaj yeem siv rau kev kho kom zoo nkauj ntawm cov kem thiab cov cim.
3. Kev lag luam tshuaj lom neeg txhua hnub
Cov tshuaj sodium carboxymethyl cellulose uas ua kom cov viscosifier ruaj khov ua lub luag haujlwm ntawm kev sib kis thiab kev ncua kev ruaj khov hauv cov khoom nplaum ntawm cov hmoov khov, thiab ua lub luag haujlwm ntawm kev ua kom tuab, kev sib kis thiab kev sib xyaw hauv cov kua lossis emulsion tshuaj pleev ib ce. Siv tau ua stabilizer thiab tackifier. Emulsion stabilizers siv tau ua emulsifiers, thickeners thiab stabilizers rau cov tshuaj pleev thiab tshuaj zawv plaub hau. Sodium carboxymethyl hydroxypropyl cellulose siv tau ua stabilizer rau cov nplaum tshuaj txhuam hniav. Nws muaj cov yam ntxwv zoo thixotropic, uas ua rau cov tshuaj txhuam hniav zoo hauv kev ua kom zoo, khaws cia ntev yam tsis muaj kev hloov pauv, thiab saj zoo ib yam thiab saj zoo. Sodium carboxymethyl hydroxypropyl cellulose muaj kev tiv thaiv ntsev thiab kua qaub zoo dua, thiab nws cov nyhuv zoo dua li carboxymethyl cellulose. Nws siv tau ua thickener hauv cov tshuaj ntxuav tes thiab cov tshuaj tiv thaiv kev ua qias tuaj. Dispersion thickener hauv kev tsim cov tshuaj ntxuav tes, sodium carboxymethylcellulose feem ntau siv ua av nkos dispersant rau cov hmoov ntxhua khaub ncaws, thickener thiab dispersant rau cov kua tshuaj ntxuav tes.
4. Tshuaj, Kev lag luam zaub mov
Hauv kev lag luam tshuaj,Hydroxypropyl carboxymethylcellulose (HPMC)siv tau ua cov tshuaj pab txhawb, siv dav hauv kev tso tawm tshuaj matrix thiab kev npaj tso tawm ntev, ua cov khoom siv tiv thaiv kev tso tawm los tswj kev tso tawm tshuaj, thiab ua cov khoom siv txheej kom ncua kev tso tawm tshuaj. Cov qauv tso tawm, cov pellets tso tawm ntev, cov tshuaj ntsiav tso tawm ntev. Cov siv dav tshaj plaws yog methyl carboxymethyl cellulose thiab ethyl carboxymethyl cellulose, xws li MC, uas feem ntau siv los ua cov ntsiav tshuaj thiab cov tshuaj ntsiav, lossis los txheej cov ntsiav tshuaj qab zib. Cov cellulose ethers qib siab siv tau hauv kev lag luam zaub mov thiab yog cov khoom ua kom tuab, cov khoom ruaj khov, cov khoom siv, cov neeg sawv cev khaws dej thiab cov neeg sawv cev ua npuas dej hauv ntau yam zaub mov. Methyl cellulose thiab hydroxypropyl methyl cellulose tau raug lees paub tias yog cov tshuaj tsis muaj teeb meem hauv lub cev. Cov khoom huv siab (saum toj no 99.5%) carboxymethylcellulose (CMC) tuaj yeem ntxiv rau cov zaub mov, xws li cov khoom mis nyuj thiab mis qab zib, cov khoom qab zib, jams, jelly, zaub mov hauv kaus poom, kua txiv hmab txiv ntoo thiab dej haus. Cov yas qhwv no muaj cov carboxymethyl cellulose uas muaj qhov huv tshaj 90% thiab siv tau rau hauv cov khoom noj xws li kev thauj mus los thiab khaws cia cov txiv hmab txiv ntoo tshiab. Cov yas qhwv no muaj cov txiaj ntsig zoo ntawm kev khaws cia cov txiv hmab txiv ntoo tshiab, tsis muaj kuab paug, tsis muaj kev puas tsuaj, thiab yooj yim siv tshuab los tsim cov khoom noj.
5. Cov ntaub ntawv siv hluav taws xob thiab kho qhov muag
Electrolyte thickening stabilizer muaj qhov huv siab ntawm cellulose ether, zoo acid tsis kam thiab ntsev tsis kam, tshwj xeeb tshaj yog cov hlau tsawg thiab cov hlau hnyav, yog li cov colloid ruaj khov heev, haum rau cov roj teeb alkaline, zinc-manganese roj teeb Electrolyte thickening stabilizer. Ntau cellulose ethers qhia txog thermotropic kua crystallinity. Hydroxypropyl cellulose acetate tsim thermotropic cholesteric kua crystals hauv qab 164 ° C.
Lub sijhawm tshaj tawm: Plaub Hlis-26-2024