Daim ntawv thov ntawm Carboxymethyl Cellulose Sodium ua Dej Retaining Agent hauv Txheej

Carboxymethyl cellulose sodium (CMC) yog cov dej-soluble polymer muab tau los ntawm cellulose uas tau siv dav hauv ntau yam kev lag luam, suav nrog cov txheej txheem. Hauv kev lag luam coatings, CMC feem ntau yog siv los ua tus neeg saib xyuas dej vim nws muaj peev xwm nqus thiab khaws dej. Hauv tsab xov xwm no, peb yuav tham txog kev thov CMC ua tus neeg saib xyuas dej hauv cov txheej txheem.

Dej Retaining Mechanism ntawm CMC hauv Txheej Txheej

Lub luag haujlwm tseem ceeb ntawm CMC ua tus neeg saib xyuas dej hauv cov txheej txheem yog nqus thiab khaws cov dej hauv cov qauv. Thaum ntxiv rau txheej txheej txheej, CMC tuaj yeem hydrate thiab tsim cov qauv zoo li gel uas tuaj yeem tuav cov dej molecules. Cov qauv zoo li gel no yog tsim los ntawm kev sib cuam tshuam ntawm pawg carboxyl ntawm CMC nrog cov dej molecules los ntawm hydrogen bonding. Qhov no ua rau muaj kev nce hauv viscosity ntawm txheej txheej txheej, uas yuav pab txo cov dej uas evaporates thaum lub sij hawm ziab.

Kev siv CMC ua tus neeg saib xyuas dej hauv cov txheej txheej

1. Dej-raws li Paints: CMC yog dav siv nyob rau hauv dej-raws li cov xim raws li ib tug dej-retaining agents. Cov xim pleev xim rau hauv dej yog tsim nrog cov feem pua ​​​​ntawm cov dej, uas tuaj yeem evaporate thaum lub sij hawm ziab, ua rau muaj qhov tsis xws luag xws li tawg, tev, thiab shrinkage. CMC tuaj yeem pab txo cov dej uas evaporates los ntawm kev nqus thiab khaws cov dej hauv cov qauv. Qhov no ua rau muaj kev ruaj khov thiab cov xim zoo ib yam.
2. Emulsion Paints: Cov xim emulsion yog hom xim xim dej uas muaj cov xim tsis muaj dej tsis muaj dej thiab cov binders. CMC yog siv rau hauv cov xim emulsion ua cov thickener thiab dej-retaining agent. Qhov sib ntxiv ntawm CMC rau cov xim emulsion tuaj yeem txhim kho cov viscosity thiab ruaj khov ntawm cov qauv, ua rau cov xim zoo nkauj dua thiab ruaj khov.
3. Coating Additives: CMC kuj tseem siv los ua cov txheej txheej ntxiv los txhim kho cov dej tuav ntawm lwm cov txheej txheem txheej txheej. Piv txwv li, CMC tuaj yeem muab ntxiv rau cov cement-based coatings los txhim kho lawv cov dej tuav thiab ua haujlwm. Qhov sib ntxiv ntawm CMC kuj tuaj yeem txo qhov tsim ntawm shrinkage tawg hauv cov cement-based coatings.
4. Texture Coatings: Cov txheej txheem kev ntxhib los mos yog siv los tsim ib qho kev ntxhib los mos ntawm phab ntsa thiab lwm qhov chaw. CMC yog siv nyob rau hauv kev ntxhib los mos coatings raws li ib tug thickener thiab dej-retaining tus neeg sawv cev. Qhov sib ntxiv ntawm CMC rau cov txheej txheem kev ntxhib los mos tuaj yeem txhim kho lawv cov viscosity thiab ua haujlwm tau zoo, ua rau muaj kev sib txuam ntau dua thiab ruaj khov.

Cov txiaj ntsig ntawm kev siv CMC ua tus neeg saib xyuas dej hauv cov txheej txheej

1. Txhim Kho Kev Ua Haujlwm Zoo: CMC tuaj yeem txhim kho kev ua haujlwm ntawm cov txheej txheem los ntawm kev txo cov dej uas evaporates thaum lub sijhawm ziab. Qhov no ua rau muaj kev sib txuam ntau dua thiab ruaj khov zaj duab xis.
2. Enhanced Adhesion: CMC tuaj yeem txhim kho qhov adhesion ntawm cov txheej txheem los ntawm kev txhim kho lawv cov viscosity thiab kev ua haujlwm. Qhov no ua rau muaj kev ruaj khov thiab zoo li qub txheej zaj duab xis uas ua raws li cov substrate zoo.
3. Ua kom muaj zog ntxiv: CMC tuaj yeem ua kom cov coatings durability los ntawm kev txo qhov tsim ntawm qhov tsis xws luag xws li tawg, tev, thiab shrinkage. Qhov no ua rau muaj cov yeeb yaj kiab zoo sib xws thiab ruaj khov uas tuaj yeem tiv taus ib puag ncig kev ntxhov siab.
4. Nqi-zoo: CMC yog tus nqi-zoo dej-txuas tus neeg saib xyuas uas tuaj yeem muab tau yooj yim rau hauv cov txheej txheem txheej txheej. Kev siv CMC tuaj yeem pab txo qis cov dej hauv cov txheej txheem, ua rau cov khoom siv qis dua thiab cov nqi tsim khoom.

Xaus

Carboxymethyl cellulose sodium (CMC) yog ntau yam polymer uas tau siv dav los ua cov dej tuav hauv cov txheej txheem. CMC tuaj yeem txhim kho kev ua haujlwm, adhesion, thiab kav ntev ntawm cov txheej txheem los ntawm kev txo cov dej uas evaporates thaum lub sijhawm ziab.