1. Petroleum kev lag luam
Sodium carboxymethyl cellulose feem ntau yog siv rau hauv cov roj extraction, siv hauv kev tsim cov av nkos, plays lub luag hauj lwm ntawm viscosity, dej poob, nws muaj peev xwm tiv taus ntau yam soluble ntsev muaj kuab paug, txhim kho cov roj rov qab. Sodium carboxymethyl hydroxypropyl cellulose (NaCMHPC) thiab sodium carboxymethyl hydroxyethyl cellulose (NaCMHEC) yog cov ntaub ntawv zoo rau kev kho av nkos thiab kev npaj cov kua dej ua tiav, nrog cov txiaj ntsig siab pulping, zoo ntsev thiab calcium tsis kam, zoo viscosity nce peev thiab kub tsis kam (160 ℃) . Tsim nyog rau kev npaj cov dej tshiab, dej hiav txwv thiab cov dej ntsev saturated dej drilling kua, nyob rau hauv qhov hnyav ntawm calcium chloride tuaj yeem npaj rau hauv ntau qhov ntom ntom (103 ~ 127g / cm3) drilling kua, thiab ua kom nws muaj qee yam viscosity thiab qis. filtration poob, nws viscosity thiab pom tsis muaj peev xwm zoo duahydroxyethyl cellulose, yog ib tug zoo roj ntau lawm additives.
Sodium carboxymethyl cellulose yog cellulose derivative dav siv nyob rau hauv cov txheej txheem ntawm kev siv roj, uas tau siv nyob rau hauv drilling kua, cementing kua, fracturing kua thiab txhim kho cov roj ntau lawm ntim, tshwj xeeb tshaj yog nyob rau hauv drilling kua nrog loj npaum li cas, feem ntau yog tshem tawm thiab tsaws pom thiab viscosification.Hydroxyethyl cellulose(HEC) yog siv rau hauv drilling, ua tiav thiab cementing txheej txheem raws li av nkos thickening stabilizer. Piv nrog sodium carboxymethyl cellulose thiab guar gum, hydroxyethyl cellulose muaj qhov zoo ntawm cov nyhuv thickening zoo, muaj zog tshem tawm cov xuab zeb, cov ntsiab lus ntsev siab, zoo tshav kub tsis kam, tsis tshua muaj dej poob, tawg kua nplaum thaiv thiab tsis tshua muaj residue.
2. Kev tsim kho thiab txheej kev lag luam
Sodium carboxymethyl cellulose, ib qho kev sib xyaw ntawm lub tsev mortar thiab coating mortar, tuaj yeem siv los ua ib qho retarder, dej tuav tus neeg saib xyuas, thickener thiab binder, thiab tuaj yeem siv los ua dispersant, dej tuav tus neeg saib xyuas thiab thickener rau plaster, mortar thiab pem teb smoothing cov ntaub ntawv ntawm gypsum thiab cement. hauv qab. Nws yog ib qho tshwj xeeb masonry thiab plastering mortar admixture ua los ntawm carboxymethyl cellulose rau aerated qhob blocks. Nws tuaj yeem txhim kho kev ua haujlwm, kev tuav dej thiab tawg tsis kam ntawm mortar, thiab zam kev tawg thiab hollowing ntawm phab ntsa thaiv. Cov khoom siv kho kom zoo nkauj hauv tsev Cao Mingqian et al ua los ntawm methyl cellulose yog ib qho khoom siv zoo nkauj hauv tsev kho kom zoo nkauj, cov txheej txheem tsim khoom yog yooj yim, huv si, tuaj yeem siv rau qib siab phab ntsa, pob zeb pob zeb nto, kuj tuaj yeem siv rau kev kho kom zoo nkauj saum npoo. ntawm kab thiab cov ntsiav tshuaj.
3. Kev lag luam tshuaj txhua hnub
Sodium carboxymethyl cellulose, lub tackifier ruaj khov, plays lub luag haujlwm hauv dispersing suspension stabilization nyob rau hauv muab tshuaj txhuam cov khoom ntawm cov hmoov raw khoom, thickening, dispersing thiab homogenizing nyob rau hauv kua los yog emulsion tshuaj pleev ib ce. Nws tuaj yeem siv ua stabilizer thiab viscosifier. Emulsifying stabilizer yog siv los ua emulsifier, tackifier thiab stabilizer rau tshuaj pleev thiab tshuaj zawv plaub hau. Sodium carboxymethyl hydroxypropyl cellulose tuaj yeem siv los ua cov nplaum stabilizer ntawm cov tshuaj txhuam hniav, nrog cov khoom zoo thixotropic, kom cov tshuaj txhuam hniav muaj qhov zoo formability, lub sij hawm ntev deformation, uniform thiab ilv saj. Sodium carboxymethyl hydroxypropyl cellulose ntsev tsis kam, acid kuj yog superior, cov nyhuv yog zoo dua li carboxymethyl cellulose, yuav siv tau raws li ib tug tackifier nyob rau hauv detergent, av adhesion tiv thaiv tus neeg sawv cev. Hauv kev tsim cov tshuaj ntxuav tes, sodium carboxymethyl cellulose feem ntau yog siv los ua cov av dispersant ntawm ntxhua khaub ncaws hmoov, thickener thiab dispersant ntawm kua detergent.
4. Kev lag luam kws tshuaj thiab zaub mov
Hauv kev lag luam kws tshuaj,hydroxypropyl carboxymethyl cellulose(HPMC) tuaj yeem siv los ua cov tshuaj excipients, dav siv nyob rau hauv lub qhov ncauj tshuaj lub cev pob txha tswj kev tso tawm thiab kev npaj tso tawm, raws li kev tso tawm cov khoom siv los tswj cov tshuaj tso tawm, raws li cov txheej txheem txheej txheem tso tawm tus neeg sawv cev, kev tso tawm pellets, kev tso tawm cov tshuaj ntsiav. . Feem ntau siv yog methyl carboxymethyl cellulose, ethyl carboxymethyl cellulose, xws li MC feem ntau yog siv rau hauv kev tsim cov ntsiav tshuaj thiab tshuaj ntsiav, los yog coated qab zib ntsiav tshuaj. Siab zoocellulose etherstuaj yeem siv rau hauv kev lag luam khoom noj khoom haus, thiab yog cov thickeners zoo, stabilizers, excipients, dej tuav cov neeg ua haujlwm thiab cov neeg kho tshuab foaming hauv ntau yam khoom noj. Methylcellulose thiabHydroxypropyl methylcellulose yog tsim los ntawm cov tshuajtau lees paub
Ib qho tshuaj metabolically inert uas tsis tsim kev puas tsuaj rau lub cev. High purity (99.5% los yog ntau tshaj purity)carboxymethyl cellulose(CMC) tuaj yeem muab ntxiv rau cov khoom noj xws li mis nyuj thiab qab zib, khoom qab zib, jams, daim tawv nqaij jellies, cov kaus poom, rooj syrups thiab dej haus. Carboxymethyl cellulose nrog purity ntau dua 90% tuaj yeem siv rau hauv cov khoom noj, xws li kev thauj mus los thiab khaws cov txiv hmab txiv ntoo tshiab. Cov hnab yas no muaj qhov zoo ntawm kev khaws cia zoo, muaj kuab paug tsawg, tsis muaj kev puas tsuaj, thiab kev siv tshuab yooj yim ntawm kev tsim khoom.
5. Cov khoom siv kho qhov muag thiab hluav taws xob
Vim lub siab purity ntawmcellulose ether, zoo acid kuj, ntsev kuj, tshwj xeeb tshaj yog cov ntsiab lus ntawm cov hlau thiab hnyav hlau, cov colloidal npaj yog ruaj khov, haum rau alkaline roj teeb, zinc-manganese roj teeb electrolyte thickening stabilizer. Ntaucellulose ethersqhia cov thermotropic kua siv lead ua zog. Acetylhydroxypropyl celluloseCov ntaub ntawv thermogenic cholesteric kua crystals hauv qab 164 ℃.
Post lub sij hawm: Mar-22-2024