Carboxymethyl cellulose

Ntuj cellulose yog qhov feem ntau faib tawm thiab feem ntau muaj ntau polysaccharide hauv xwm, thiab nws cov peev txheej tau nplua nuj. Tam sim no hloov kho cov thev naus laus zis ntawm cov cellulose feem ntau yog ethermau thiab esterification. Carboxymethylation cov tshuaj tiv thaiv yog ib hom ntawm etherilication thev naus laus zis. Carboxymethyl cellulose (CMC) tau tom qab Carboxymowylation ntawm cellulose. Nws cov kev daws teeb meem aqueous muaj cov haujlwm ntawm thickening, kev tiv thaiv, zaub mov, khoom noj, yog ib qho ntawm cellule cellulose muaj kev hais txog tseem ceeb tshaj plaws.

Cov Khoom Siv Lub Cev
Sodium Carboxymetylcelleculose (CMC) yog anionic cellulose ether. Nws cov tsos yog dawb lossis me ntsis daj flocculent fiber ntau los yog hmoov dawb, tsw, thiab tsis muaj tshuaj lom; Nws yog yooj yim soluble nyob rau hauv txias los yog dej kub thiab ua qhov txawv viscosity. pob tshab. The solution is neutral or slightly alkaline, insoluble in ethanol, ether, isopropanol, acetone and other organic solvents, but soluble in 60% ethanol or acetone solution. Nws yog hygroscopic thiab ruaj khov rau lub teeb thiab kub. Lub viscosity txo nrog qhov nce ntawm kub. Cov kev daws teeb meem yog ruaj khov ntawm Ph 2-10. Thaum lub p yog qis dua 2, cov khib nyiab yog precipitated. Thaum lub pH yog siab tshaj 10, lub viscosity txo. Qhov kub qhuav dej kub yog 227 ° C, cov carbonation kub yog 252 ° C, thiab cov tshuaj muaj yees ntawm 21mn / n.

Tshuaj Tshuaj Muaj Zog
Nws tau los ntawm kho cellulose nrog carboxymethyl chaw, kho cellulose nrog socium cellulose, thiab tom qab ntawd reacting nrog monochloroacetic acid. Cov dej qab zib qab zib uas suav tau cov pawg muaj peb pawg neeg hydroxyl uas tuaj yeem hloov, yog li cov khoom lag luam nrog cov hloov pauv sib hloov tuaj yeem tau txais. Nyob rau nruab nrab, 1MMOL ntawm Carboxymethyl pab pawg ib 1g ntawm qhov hnyav yog insoluble hauv dej thiab dilute acid, tab sis tuaj yeem tau o ion txauv cov chromatography. Carboxymethyl Pka yog li 4 nyob rau hauv cov dej ntshiab thiab txog 3.5 nyob rau 0.5Mol / l nacl. Nws yog qhov tsis muaj zog acidic cation compress compress thiab feem ntau yog siv rau kev sib cais ntawm nruab nrab thiab cov protein yooj yim ntawm Ph> 4. Ntau tshaj 40% ntawm cov pab pawg hydroxyl tau hloov los ntawm cov pab pawg carboxymethyl, uas tuaj yeem ua kom yaj nyob rau hauv cov dej los ua kom muaj kev ruaj khov siab colloloal tov.

Lub hom phiaj tseem ceeb
Carboxymetylcelleculose (CMC) yog cov hmoov tsis muaj tshuaj lom, tsw dawb Nws cov kua aqueous yog qhov nruab nrab lossis alkaline pob tshab viscous kua, soluble ci ci ci thiab resins, thiab insoluble hauv cov kuab tshuaj ethanol. CMC tuaj yeem siv los ua cov phau ntawv, cov tuab dua, emulsify, emulsifier, dispersant, stabilizer, sizing tus neeg sawv cev, thiab lwm yam.

Sodium Carboxymethyl cellulose (CMC) yog cov khoom siv nrog cov khoom siv ntau tshaj plaws, feem ntau paub txog "Industrial Monosodium Glutamate".

1. Siv hauv cov roj thiab roj av drilling, zoo khawb thiab lwm yam haujlwm
① CMC-muaj cov av nkos tuaj yeem ua kom lub zoo phab ntsa daim ntawv nyias nyias thiab lub forial lim ncuav mog qab zib nrog cov khoom siv qis, txo cov dej poob qis.
② Tom qab ntxiv CMC mus rau cov av nkos, lub chaw nres tsheb tuaj yeem muab tso tawm cov roj qis, yog li cov av nkos tau yooj yim tso pov tseg hauv cov av nkos.
③ Qhov av nkos, zoo li lwm cov kev ncua thiab kev faib tawm, muaj qee yam txee lub neej. Ntxiv CMC tuaj yeem ua rau nws ruaj khov thiab ua kom tiav lub txee lub neej.
④ CMC-muaj cov av nkos tsis tshua muaj cuam tshuam los ntawm pwm, yog li nws tsis tsim nyog los tswj tus nqi pH siab thiab siv cov tshuaj txuag.
⑤ muaj CMC ua tus neeg sawv cev kho rau drilling av nkos, uas tuaj yeem tiv thaiv cov kuab paug ntawm ntau cov ntsev soluble.
⑥ CMC-muaj cov av nkos muaj qhov ruaj khov zoo thiab tuaj yeem txo cov dej poob txawm tias qhov ntsuas kub nyob saum toj 150 ° C.

CMC nrog cov viscosity siab thiab qib siab ntawm kev ceev, thiab cmc nrog cov viscosity tsawg dua yog tsim nyog rau cov av nkos nrog siab ntom ntom ntom. Kev xaiv ntawm CMC yuav tsum txiav txim siab raws li cov xwm txheej sib txawv xws li hom av nkos, thaj av, thiab qhov tob tob.

2. Siv rau hauv Textile, luam ntawv thiab daubing kev lag luam. Hauv kev lag luam textile, cmc yog siv los ua tus sawv cev cov neeg sawv cev rau lub teeb cov xov paj sizing ntawm paj rwb, cov ntaub qhwv hmoov, sib xyaw thiab lwm yam khoom siv khov kho;

3. Siv hauv cov ntawv lag luam CMC tuaj yeem siv tau los ua ntawv smoothing tus neeg sawv cev thiab sizing tus neeg sawv cev hauv kev lag luam ntawv. Ntxiv 0.1% rau 0.3% ntawm CMC nyob rau hauv lub pulp tuaj yeem nce lub zog tensile ntawm daim ntawv los ntawm 50%, thiab nce kneading cov cuab yeej los ntawm 4 txog 5 zaug.

4. CMC tuaj yeem siv los ua cov av adsorbent thaum ntxiv rau cov hluavtaws hluav taws xob; Cov tshuaj txhua hnub xws li cov tshuaj txhuam hniav CMC Glycerol Aqueous daws yog siv los ua cov hniav cov hniav tshuaj txhuam hniav; Kws Tshuaj Kev Lag Luam yog siv los ua cov tuab thiab emulsifier; CMC aqueous daws yog siv raws li ntab tom qab thickening mining thiab li ntawd.

5. Nws tuaj yeem siv tau ua nplaum, yas, tuaj yeem ncua tus neeg sawv cev ntawm ci, xim kho tus neeg sawv cev, thiab lwm yam hauv kev lag luam ceramic.

6. Siv hauv kev tsim kho kom txhim kho cov dej tuav cia thiab lub zog

7. Siv hauv kev lag luam khoom noj. Cov khoom noj khoom haus siv CMC nrog qib siab ntawm cov tuab tuab rau cov dej khov, cov zaub mov kaus poom, thiab ua npuas dej khov kho rau npias. Rau cov thickeners, binders lossis conformal tus neeg sawv cev.

8. Lub tsev kws tshuaj paus xaiv cov qauv dav dav raws li cov phau ntawv sib tsoo ntawm cov ntsiav tshuaj, thiab cov sawv cev ntawm kev txwv, thiab lwm yam.