Hauv kev lag luam tshuaj, CMC (Carboxymethyl Cellulose Sodium) kuj raug hu ua CMC. CMC yog ib qho tseem ceeb ntawm cellulose derivative tau los ntawm chemically modifying natural cellulose. Tshwj xeeb, cov qauv molecular ntawm CMC yog cov carboxymethyl pawg tau nkag mus rau hauv cellulose molecule, uas muab ntau yam tshiab lub cev thiab tshuaj, yog li nws yog dav siv hauv tshuaj, khoom noj khoom haus, tshuaj thiab lwm yam lag luam.
1. Cov qauv tshuaj thiab cov khoom ntawm CMC
CMC yog ib qho cellulose ether compound tau los ntawm cov tshuaj tiv thaiv ntawm cellulose thiab chloroacetic acid, thiab nws cov qauv txheej txheem yog β-1,4-glucose nplhaib. Tsis zoo li cov cellulose ntuj, pawg carboxymethyl tau nkag mus rau hauv cov qauv molecular ntawm CMC, uas ua rau nws tsim cov kua nplaum colloidal hauv dej. Qhov hnyav molecular ntawm CMC tuaj yeem hloov kho raws li qib ntawm cov tshuaj tiv thaiv, thiab CMCs ntawm qhov sib txawv molecular hnyav qhia tau tias sib txawv solubility thiab viscosity hauv daim ntawv thov. Lub solubility thiab viscosity ntawm CMC raug cuam tshuam los ntawm qib ntawm kev hloov pauv (uas yog, tus naj npawb ntawm cov hloov pauv ntawm cov cellulose molecule). CMC nrog kev hloov pauv siab feem ntau muaj ntau dua dej solubility thiab viscosity. CMC muaj tshuaj lom neeg ruaj khov, muaj qee qhov ua rau cov kua qaub thiab alkali ib puag ncig, tsis muaj tshuaj lom thiab tsis muaj mob, thiab ua tau raws li kev tiv thaiv ib puag ncig thiab cov qauv kev noj qab haus huv.
2. CMC txheej txheem ntau lawm
Cov txheej txheem tsim khoom ntawm CMC suav nrog peb kauj ruam: alkalization, etherification thiab tom qab kho.
Alkalization: Cellulose (feem ntau yog los ntawm cov ntaub ntawv ntuj xws li paj rwb thiab ntoo pulp) yog kho nrog sodium hydroxide los txhim kho hydroxyl kev ua ntawm cellulose, uas yooj yim rau cov kev tshwm sim tom ntej.
Etherification: Sodium chloroacetate yog ntxiv rau alkalized cellulose, thiab carboxymethyl pawg tau qhia los ntawm cov tshuaj tiv thaiv los hloov cellulose rau hauv carboxymethyl cellulose.
Tom qab kev kho mob: CMC tsim los ntawm cov tshuaj tiv thaiv yog neutralized, lim, qhuav thiab crushed thaum kawg tau txais cov khoom ntawm txawv specifications. Cov qib ntawm kev hloov pauv thiab qhov hnyav ntawm cov khoom tuaj yeem hloov kho los ntawm kev tswj cov tshuaj tiv thaiv, cov khoom siv raw concentration thiab cov tshuaj tiv thaiv lub sij hawm, thiaj li tau txais CMC cov khoom nrog cov viscosities sib txawv thiab cov khoom solubility.
3. Kev ua tau zoo ntawm CMC
Raws li cov thickener ua tau zoo, stabilizer, zaj duab xis qub thiab nplaum, CMC muaj cov yam ntxwv ua tau zoo hauv qab no:
Cov dej zoo solubility: CMC yog yooj yim soluble nyob rau hauv dej thiab muaj peev xwm tsim ib tug pob tshab colloidal tov, thiab dissolution txheej txheem yog maj mam thiab yooj yim rau kev khiav lag luam.
Cov nyhuv thickening muaj zog: CMC tuaj yeem ua kom cov viscosity ntawm cov tshuaj ntawm qhov qis dua, uas ua rau nws muaj txiaj ntsig zoo hauv ntau lub sijhawm uas yuav tsum tau ua kom cov nyhuv thickening.
Stability: CMC muaj siab kam rau acid, alkali, lub teeb, tshav kub, thiab lwm yam., thiab muaj kev ruaj ntseg zoo.
Kev nyab xeeb thiab tsis muaj tshuaj lom: CMC yog dav siv hauv cov khoom noj, tshuaj thiab lwm yam lag luam. Nws muaj kev nyab xeeb thiab tsis muaj tshuaj lom thiab haum rau cov khoom noj khoom haus ncaj qha lossis tsis ncaj qha.
4. Daim ntawv thov teb ntawm CMC
Kev lag luam khoom noj khoom haus: CMC yog dav siv los ua cov thickener, emulsifier, stabilizer, thiab lwm yam hauv kev lag luam khoom noj. Nws tuaj yeem siv rau hauv cov dej khov nab kuab, jam, condiments, dej haus, khoom noj siv mis, thiab lwm yam los txhim kho kev ntxhib los mos, saj thiab ruaj khov ntawm cov zaub mov. Piv txwv li, CMC raws li ib tug thickener nyob rau hauv ice cream tuaj yeem tiv thaiv kev tsim cov dej khov nab kuab thiab ua rau lub saj ntawm ice cream smoother.
Kev lag luam kws tshuaj: Hauv kev lag luam tshuaj, CMC tuaj yeem siv los ua cov nplaum rau cov ntsiav tshuaj, matrix rau cov tshuaj pleev, thiab cov thickener rau qee cov tshuaj ua kua. CMC kuj muaj qee yam adhesion thiab zaj duab xis-tsim cov khoom, uas tuaj yeem txhim kho cov kev tswj kev tso tawm ntawm cov tshuaj thiab txhim kho kev ruaj ntseg thiab kev nqus ntawm cov tshuaj.
Kev lag luam tshuaj txhua hnub: Hauv cov tshuaj pleev ib ce thiab cov khoom siv tu tus kheej, CMC yog dav siv hauv cov tshuaj pleev ib ce, tshuaj zawv plaub hau thiab lwm yam khoom siv ua cov thickener thiab stabilizer. CMC cov dej solubility zoo thiab cov khoom ua yeeb yaj kiab ua kom nws ruaj khov rau cov qauv ntawm cov tshuaj pleev ib ce thiab txhim kho qhov muag muag ntawm cov khoom.
Kev lag luam roj av: CMC plays lub luag hauj lwm ntawm thickener thiab filtration tus neeg saib xyuas nyob rau hauv drilling kua, fracturing kua thiab cement slurry, zoo txo qhov kev pheej hmoo ntawm cov kua poob thiab blockage thaum lub sij hawm drilling, thiab txhim kho drilling efficiency thiab kev nyab xeeb.
Kev lag luam textile thiab papermaking: CMC tuaj yeem siv los ua tus neeg sawv cev ntawm cov xov paj, tus neeg sawv cev ntawm cov xov paj thiab cov ntawv ntxiv hauv cov ntaub ntawv textile thiab papermaking, uas tuaj yeem txhim kho cov xov paj zog thiab txhim kho cov dej tsis kam thiab tensile zog ntawm daim ntawv.
5. Kev xav tau ntawm kev ua lag luam thiab kev loj hlob ntawm CMC
Nrog rau kev loj hlob sai ntawm kev lag luam thoob ntiaj teb thiab kev nce qib thev naus laus zis, kev lag luam xav tau rau CMC tau loj hlob. Tshwj xeeb tshaj yog nyob rau hauv cov zaub mov thiab tshuaj industries, raws li cov neeg tau txais kev pab ntau dua rau kev noj qab haus huv thiab kev nyab xeeb, lub ntuj thiab harmless thickener CMC tau maj mam hloov ib co tshuaj hluavtaws. Nyob rau hauv lub neej yav tom ntej, qhov kev thov rau CMC kev lag luam yuav tsum tau nthuav dav ntxiv, tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov kev cia siab ntawm cov khoom noj khoom haus thickeners, drilling kua, tshuaj tswj cov nqa khoom, thiab lwm yam.
Txij li cov khoom siv raw ntawm CMC feem ntau yog cov cellulose, cov txheej txheem tsim khoom yog ib puag ncig zoo. Txhawm rau kom ua tiav txoj kev loj hlob ntawm kev lag luam tshuaj ntsuab, CMC cov txheej txheem tsim khoom kuj tseem txhim kho tas li, xws li txo cov pa phem hauv cov txheej txheem tsim khoom, txhim kho kev siv peev txheej, thiab lwm yam, thiab sib zog ua kom cov khoom tsim CMC ua tau raws li lub hom phiaj. ntawm kev txhim kho sustainable.
Raws li ib qho tseem ceeb cellulose derivative, sodium carboxymethyl cellulose (CMC) tau dav siv nyob rau hauv ntau industries xws li tshuaj, khoom noj khoom haus, tshuaj, tshuaj txhua hnub, roj av, textile thiab papermaking vim nws cov cim solubility ntawm dej, thickening thiab zoo stability. Nrog rau kev nce qib ntawm thev naus laus zis thiab kev nce hauv kev xav tau ntawm kev lag luam, cov txheej txheem tsim khoom thiab daim ntawv thov kev lag luam ntawm CMC tau nthuav dav tas li, thiab nws muaj peev xwm txhim kho tseem ceeb hauv kev lag luam tshuaj ntsuab thiab kev ua haujlwm siab yav tom ntej.
Post lub sij hawm: Nov-01-2024