Sodium carboxymethyl cellulose (CMC) yog anionic, ncaj saw, dej-soluble cellulose ether, derivative ntawm natural cellulose thiab chloroacetic acid los ntawm kev hloov tshuaj.Nws cov tshuaj aqueous muaj cov haujlwm ntawm thickening, film forming, bonding, water retention, colloidal protection, emulsification and suspension, and can be used as flocculant, chelating agent, emulsifier, thickener, water retaining agent, sizing agent, film forming material, etc. ., uas yog dav siv nyob rau hauv cov zaub mov, tshuaj, electronics, tshuaj tua kab, tawv, plastics, luam ntawv, ceramics, niaj hnub tshuaj kev lag luam thiab lwm yam kev lag luam.

Sodium carboxymethyl cellulose feem ntau yog cov hmoov nplej, qee zaum granular lossis fibrous, dawb los yog lub teeb daj xim, tsis muaj ntxhiab tsw tshwj xeeb, yog cov tshuaj macromolecular, muaj zog wettability, muaj peev xwm yaj hauv dej, hauv dej los tsim cov kua nplaum uas muaj siab. pob tshab.Insoluble nyob rau hauv cov organic daws teeb meem, xws li ethanol, ether, chloroform thiab benzene, tab sis yuav yaj nyob rau hauv dej, ncaj qha yaj nyob rau hauv dej kuj qeeb, tab sis lub solubility tseem loj heev, thiab cov aqueous tov muaj ib tug tej yam viscosity.Cov khoom nyob rau hauv ib puag ncig yog ruaj khov dua, vim tias nws muaj qee qhov nqus dej thiab cov av noo, nyob rau hauv ib puag ncig qhuav, tuaj yeem khaws cia rau lub sijhawm ntev.

① Cov txheej txheem ntau lawm

1. Dej nruab nrab txoj kev

Cov txheej txheem dej- thee yog txheej txheem tsim khoom thaum ntxov hauv kev npaj muaj sodium carboxymethyl cellulose.Nyob rau hauv cov txheej txheem no, cov alkali cellulose thiab etherifying tus neeg sawv cev reacts nyob rau hauv ib tug aqueous tov uas muaj dawb oxygen oxide ions, thiab dej yog siv raws li cov tshuaj tiv thaiv nruab nrab nyob rau hauv cov tshuaj tiv thaiv txheej txheem, tsis muaj organic solvents.

2. Txoj kev hnyav

Cov txheej txheem hnyav yog cov txheej txheem organic hnyav, uas yog cov txheej txheem tsim khoom tsim los ntawm cov txheej txheem dej nruab nrab los hloov dej nrog cov kuab tshuaj organic ua cov tshuaj tiv thaiv nruab nrab.Cov txheej txheem ntawm alkalization thiab etherification ntawm alkali cellulose thiab monochloroacetic acid nyob rau hauv cov organic hnyav.Raws li tus nqi ntawm cov tshuaj tiv thaiv nruab nrab, nws tuaj yeem muab faib ua txoj kev kneading thiab ua luam dej slurry txoj kev.Tus nqi ntawm cov kuab tshuaj organic siv nyob rau hauv txoj kev pulping yog ntau loj dua li ntawm txoj kev kneading, thiab tus nqi ntawm cov organic hnyav siv nyob rau hauv txoj kev kneading yog qhov piv ntawm qhov hnyav ntawm cov cellulose npaum li cas, thaum tus nqi ntawm cov organic hnyav siv. nyob rau hauv txoj kev pulping yog qhov piv ntawm qhov ntim qhov hnyav ntawm tus nqi cellulose.Thaum sodium carboxymethyl cellulose tau npaj los ntawm kev ua luam dej slurry, cov tshuaj tiv thaiv cov khoom yog nyob rau hauv slurry los yog ncua kev kawm ntawv nyob rau hauv lub cev, yog li txoj kev ua luam dej slurry kuj hu ua txoj kev ncua.

3. Txoj kev Slurry

Txoj kev slurry yog cov cuab yeej tshiab tshaj plaws los tsim sodium carboxymethyl cellulose.Txoj kev slurry tuaj yeem tsis tsuas yog tsim cov purity siab sodium carboxymethyl cellulose xwb, tab sis kuj tsim sodium carboxymethyl cellulose nrog qib siab hloov pauv thiab hloov tsis zoo.Kev tsim cov txheej txheem slurry yog kwv yees li hauv qab no: cov paj rwb pulp uas tau muab tso rau hauv cov hmoov yog xa mus rau ntsug alkalizing tshuab nruab nrog isopropyl cawv, thiab sodium hydroxide tov ntxiv thaum sib tov yog alkalized, thiab alkalizing kub yog li 20. ℃.Tom qab alkalization, cov khoom yog pumped mus rau ntsug etherifying tshuab, thiab cov isopropyl cawv tov ntawm chloroacetic acid ntxiv, thiab etherifying kub yog hais txog 65 ℃.Raws li cov khoom siv tshwj xeeb thiab cov kev xav tau zoo, alkalization concentration, alkalization lub sij hawm, tus nqi ntawm etherifying tus neeg saib xyuas thiab etherification lub sij hawm thiab lwm yam txheej txheem tsis tuaj yeem hloov kho.

② Daim ntawv thov Scope

1. CMC tsis yog tsuas yog ib qho zoo emulsifying stabilizer thiab thickener nyob rau hauv daim ntawv thov zaub mov, tab sis kuj muaj zoo heev khov thiab melting stability, thiab muaj peev xwm txhim kho cov khoom tsw thiab ncua sij hawm cia.

2. Hauv cov tshuaj ntxuav tes, CMC tuaj yeem siv los ua tus neeg sawv cev tiv thaiv fouling redeposition, tshwj xeeb tshaj yog rau hydrophobic hluavtaws fiber ntaub los tiv thaiv fouling redeposition nyhuv, ho zoo dua carboxymethyl fiber ntau.

3. Hauv cov roj drilling tuaj yeem siv los tiv thaiv cov roj Wells li cov av nkos stabilizer, tus neeg saib xyuas dej, tus nqi ntawm txhua qhov dej yog 2 ~ 3t qhov dej ntiav, qhov tob tob 5 ~ 6t.

4. Siv nyob rau hauv kev lag luam textile li sizing tus neeg saib xyuas, luam ntawv thiab dyeing slurry thickener, textile printing thiab stiffening tiav.

5. Siv los ua txheej txheej tiv thaiv tus neeg sawv cev, emulsifier, dispersant, leveling tus neeg sawv cev, nplaum, tuaj yeem ua rau cov khoom ntawm cov xim sib npaug sib npaug hauv cov kuab tshuaj, kom cov xim tsis stratified rau lub sijhawm ntev, tab sis kuj siv rau hauv putty. .

6. Raws li flocculant hauv kev tshem tawm cov calcium ions ntau dua sodium gluconate zoo dua, raws li kev sib pauv cation, kev sib pauv muaj peev xwm txog li 1.6ml / g.

7. Nyob rau hauv daim ntawv kev lag luam siv los ua daim ntawv sizing tus neeg sawv cev, tuaj yeem txhim kho lub zog qhuav thiab ntub lub zog ntawm daim ntawv thiab roj tsis kam, number case absorption thiab dej tsis kam.

8. Raws li hydrosol nyob rau hauv cov tshuaj pleev ib ce, siv los ua ib tug thickening neeg sawv cev nyob rau hauv cov tshuaj txhuam hniav, nws npaum li cas yog hais txog 5%.

Lag luam wholesale Carboxymethyl Cellulose (CMC) Chaw tsim tshuaj paus thiab tsum |EVERBRIGHT (cnchemist.com)