Carboxymethyl cellulose (CMC) yog ib qho tseem ceeb ntawm ntuj polymer compound uas tau siv dav hauv kev lag luam ceramic. Raws li cov dej-soluble nplaum nplaum, CMC tuaj yeem txhim kho kev ua haujlwm ntawm cov khoom siv ceramic, txhawb kev ruaj ntseg thiab kev sib txig sib luag thaum ua, thiab txhim kho qhov zoo ntawm cov khoom kawg.
1. Cov khoom tseem ceeb ntawm carboxymethyl cellulose
Carboxymethyl cellulose yog derivative ntawm cellulose, uas muaj dej solubility zoo, adhesion thiab thickening zog los ntawm kev hloov tshuaj. Cov qauv molecular ntawm CMC muaj cov pab pawg carboxyl (-COOH), uas ua rau nws tsim cov tshuaj colloidal hauv dej nrog adhesion zoo thiab rheological zog. Cov khoom no ua rau CMC yog ib qho tseem ceeb ntxiv hauv cov khoom siv ceramic.
2. Daim ntawv thov hauv cov khoom siv ceramic
2.1 Adhesive
Hauv cov txheej txheem molding ntawm cov khoom siv ceramic, CMC feem ntau yog siv los ua cov nplaum. Nws tuaj yeem txhim kho lub zog sib txuas ntawm cov khoom siv raw khoom thiab tiv thaiv kev tawg thiab deformation thaum ziab thiab sintering. Los ntawm optimizing tus nqi ntawm CMC ntxiv, cov khoom rheological ntawm slurry tuaj yeem hloov kho kom nws ua haujlwm ntau dua thaum molding.
2.2 Thickener
CMC muaj cov khoom tuab zoo heev thiab tuaj yeem siv los kho cov viscosity ntawm ceramic slurry. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau cov txheej txheem xws li txau thiab nchuav, uas tuaj yeem ua kom ruaj khov ntawm slurry thaum lub sijhawm ua haujlwm thiab tsis txhob los nag lossis stratification. Nyob rau tib lub sijhawm, qhov tsim nyog viscosity tuaj yeem txhim kho qhov fluidity ntawm slurry, ua kom yooj yim sau cov pwm.
2.3 Dispersant
Hauv kev tsim cov khoom siv ceramic, CMC tuaj yeem siv los ua cov khoom tawg los pab cuam tshuam cov khoom hauv cov khoom siv ceramic thiab tiv thaiv agglomeration. Kev ua tau zoo dispersion pab txhim kho cov uniformity thiab ntom ntawm cov khoom siv ceramic, yog li txhim kho cov khoom siv kho qhov muag thiab kho qhov muag ntawm cov khoom kawg.
3. Cov nyhuv ntawm CMC ntawm Ceramic Properties
Tom qab ntxiv CMC, kev ua haujlwm ntawm cov khoom siv ceramic feem ntau yog txhim kho. Cov kev tshawb fawb tau pom tias qhov tsim nyog ntawm CMC tuaj yeem txhim kho lub zog compressive thiab flexural zog ntawm cov khoom siv ceramic. Tsis tas li ntawd, qhov sib ntxiv ntawm CMC tuaj yeem txhim kho qhov smoothness thiab gloss ntawm ceramics, ua rau cov khoom kawg zoo nkauj dua.
4. Environmental friendliness ntawm CMC
Piv nrog cov khoom siv hluavtaws hluavtaws, CMC, raws li lub ntuj tsim, muaj biocompatibility zoo thiab ib puag ncig tus phooj ywg. Kev siv CMC hauv cov txheej txheem tsim cov khoom siv ceramic tuaj yeem tsis tsuas yog txhim kho cov khoom lag luam, tab sis kuj txo cov pa phem ib puag ncig thiab kev puas tsuaj rau tib neeg lub cev, uas ua tau raws li cov kev xav tau ntawm kev txhim kho niaj hnub niaj hnub.
Daim ntawv thov ntawm carboxymethyl cellulose nyob rau hauv lub ceramic kev lag luam qhia tau hais tias nws muaj ntau yam functions raws li ib tug binder, thickener thiab dispersant. Los ntawm optimizing nws siv, kev ua tau zoo thiab zoo ntawm cov khoom siv ceramic tuaj yeem txhim kho tau zoo, txhawb kev txhim kho kev lag luam ceramic. Nrog rau kev tshawb fawb tob zuj zus thiab kev nce qib ntawm thev naus laus zis, daim ntawv thov kev cia siab ntawm CMC hauv cov khoom siv ceramic yuav dav dua.
Post lub sij hawm: Nov-05-2024