Nyob rau hauv cov txheej txheem ntau lawm ceramic, lub viscosity ntawm glaze slurry yog ib qho tseem ceeb heev parameter, uas ncaj qha cuam tshuam lub fluidity, uniformity, sedimentation thiab zaum kawg glaze nyhuv ntawm glaze. Txhawm rau kom tau txais qhov zoo tshaj plaws glaze nyhuv, nws yog ib qho tseem ceeb los xaiv qhov tsim nyogCMC (Carboxymethyl Cellulose) raws li ib tug thickener. CMC yog lub ntuj polymer compound feem ntau siv nyob rau hauv ceramic glaze slurry, nrog zoo thickening, rheological zog thiab ncua kev kawm ntawv.
1. Nkag siab txog qhov xav tau viscosity ntawm glaze slurry
Thaum xaiv CMC, koj thawj zaug yuav tsum tau qhia meej txog qhov yuav tsum tau muaj viscosity ntawm glaze slurry. Txawv glazes thiab cov txheej txheem ntau lawm muaj cov kev cai sib txawv rau cov viscosity ntawm glaze slurry. Feem ntau hais lus, siab dhau lossis qis dhau ntawm cov glaze slurry yuav cuam tshuam rau kev txau, txhuam los yog dipping ntawm glaze.
Tsawg viscosity glaze slurry: haum rau cov txheej txheem txau. Tsis tshua muaj viscosity tuaj yeem ua kom ntseeg tau tias cov glaze yuav tsis thaiv cov phom sij thaum txau thiab tuaj yeem tsim cov txheej txheem ntau dua.
Nruab nrab viscosity glaze slurry: haum rau dipping txheej txheem. Qhov nruab nrab viscosity tuaj yeem ua rau cov glaze sib npaug ntawm cov nplais ceramic, thiab nws tsis yooj yim rau sag.
High viscosity glaze slurry: haum rau kev txhuam hniav. High viscosity glaze slurry tuaj yeem nyob ntawm qhov chaw ntev, tsis txhob muaj dej ntau dhau, thiab yog li tau txais txheej txheej glaze tuab.
Yog li ntawd, kev xaiv ntawm CMC yuav tsum ua kom haum rau cov txheej txheem tsim khoom.
2. Kev sib raug zoo ntawm kev ua haujlwm thickening thiab viscosity ntawm CMC
Kev ua kom tuab ntawm AnxinCel®CMC feem ntau yog txiav txim siab los ntawm nws qhov hnyav molecular, qib ntawm carboxymethylation thiab ntxiv nyiaj.
Molecular Luj: Qhov siab dua qhov hnyav molecular ntawm CMC, qhov muaj zog nws cov nyhuv thickening. Qhov hnyav dua molecular tuaj yeem ua kom cov viscosity ntawm cov tshuaj, kom nws tsim cov slurry thicker thaum siv. Yog li, yog tias yuav tsum muaj viscosity glaze slurry ntau dua, yuav tsum tau xaiv qhov hnyav molecular CMC.
Qib ntawm carboxymethylation: Qhov siab dua qib ntawm carboxymethylation ntawm CMC, qhov muaj zog dua nws cov dej solubility, thiab nws tuaj yeem cuam tshuam zoo hauv dej kom tsim tau cov viscosity ntau dua. Feem ntau CMCs muaj ntau qib ntawm carboxymethylation, thiab ntau yam tsim nyog tuaj yeem xaiv raws li qhov yuav tsum tau ua ntawm glaze slurry.
Ntxiv tus nqi: Qhov sib ntxiv ntawm CMC yog ib qho ncaj qha txhais tau tias tswj cov viscosity ntawm glaze slurry. Ntxiv CMC tsawg dua yuav ua rau qis viscosity ntawm glaze, thaum nce tus nqi ntawm CMC ntxiv yuav ua rau kom muaj viscosity. Hauv kev tsim khoom tiag tiag, tus nqi ntawm CMC ntxiv yog feem ntau ntawm 0.5% thiab 3%, hloov kho raws li cov kev xav tau tshwj xeeb.
3. Cov yam ntxwv cuam tshuam rau kev xaiv CMC viscosity
Thaum xaiv CMC, qee qhov lwm yam cuam tshuam yuav tsum tau xav txog:
a. Kev sib xyaw ntawm glaze
Qhov sib xyaw ntawm glaze yuav cuam tshuam ncaj qha rau nws cov kev xav tau viscosity. Piv txwv li, glazes nrog ib tug loj npaum li cas ntawm cov hmoov zoo yuav xav tau ib tug thickener nrog ib tug siab viscosity kom tswj tau zoo ncua kev kawm ntawv. Glazes nrog cov khoom me me yuav tsis xav kom muaj viscosity siab dhau.
b. Glaze particle loj
Glazes nrog ntau dua fineness yuav tsum tau CMC kom muaj cov thickening zoo dua los xyuas kom meej tias cov khoom zoo tuaj yeem raug tshem tawm hauv cov kua. Yog tias qhov viscosity ntawm CMC tsis txaus, cov hmoov zoo tuaj yeem ua rau nag, ua rau tsis sib xws.
c. Dej hardness
Lub hardness ntawm dej muaj qee yam cuam tshuam rau solubility thiab thickening nyhuv ntawm CMC. Lub xub ntiag ntawm calcium thiab magnesium ions nyob rau hauv cov dej tawv yuav txo tau cov thickening nyhuv ntawm CMC thiab txawm ua rau nag lossis daus. Thaum siv cov dej tawv, koj yuav tsum xaiv qee hom CMC los daws qhov teeb meem no.
d. Ua haujlwm kub thiab av noo
Qhov sib txawv ntawm qhov chaw ua haujlwm kub thiab av noo yuav cuam tshuam rau viscosity ntawm CMC. Piv txwv li, nyob rau hauv ib puag ncig kub, dej evaporates sai, thiab tsawg-viscosity CMC yuav tsum tau kom tsis txhob over-thickening ntawm glaze slurry. Ntawm qhov tsis sib xws, ib puag ncig qhov kub thiab txias yuav xav tau ntau dua viscosity CMC los xyuas kom meej qhov ruaj khov thiab fluidity ntawm slurry.
4. Kev xaiv thiab kev npaj ntawm CMC
Hauv kev siv tiag tiag, kev xaiv thiab kev npaj ntawm CMC yuav tsum tau ua raws li cov kauj ruam hauv qab no:
Kev xaiv AnxinCel®CMC hom: Ua ntej, xaiv CMC ntau yam tsim nyog. Muaj cov qib viscosity sib txawv ntawm CMC nyob rau hauv kev ua lag luam, uas tuaj yeem xaiv raws li qhov yuav tsum tau muaj viscosity thiab ncua kev ncua ntawm glaze slurry. Piv txwv li, tsis tshua muaj molecular hnyav CMC yog haum rau glaze slurries yuav tsum tsis muaj viscosity, thaum siab molecular hnyav CMC yog haum rau glaze slurries xav tau siab viscosity.
Kev sim hloov ntawm viscosity: Raws li qhov tshwj xeeb glaze slurry yuav tsum, tus nqi ntawm CMC ntxiv yog sim kho. Txoj kev sim ntau tshaj yog maj mam ntxiv CMC thiab ntsuas nws cov viscosity kom txog rau thaum qhov xav tau viscosity ntau.
Saib xyuas qhov ruaj khov ntawm glaze slurry: Cov npaj glaze slurry yuav tsum tau sab laug kom sawv ntsug rau ib lub sij hawm los saib xyuas nws cov stability. Tshawb xyuas nag lossis daus, agglomeration, thiab lwm yam. Yog tias muaj teeb meem, tus nqi lossis hom CMC yuav tsum tau kho.
Kho lwm yam additives: Thaum sivCMC, nws tseem yuav tsum tau xav txog kev siv lwm yam additives, xws li dispersants, leveling agents, thiab lwm yam. Cov additives no yuav cuam tshuam nrog CMC thiab cuam tshuam rau nws thickening nyhuv. Yog li ntawd, thaum kho CMC, nws tseem yuav tsum tau them sai sai rau qhov piv ntawm lwm yam additives.
Kev siv CMC hauv ceramic glaze slurry yog ib qho kev ua haujlwm zoo, uas yuav tsum tau ua tib zoo xav thiab hloov kho raws li qhov yuav tsum tau muaj viscosity, muaj pes tsawg leeg, particle loj, siv ib puag ncig thiab lwm yam ntawm glaze slurry. Tsim nyog xaiv thiab ntxiv ntawm AnxinCel®CMC tuaj yeem tsis tsuas yog txhim kho kev ruaj ntseg thiab fluidity ntawm glaze slurry, tab sis kuj txhim kho qhov kawg glaze nyhuv. Yog li ntawd, tsis tu ncua optimizing thiab kho cov qauv siv CMC nyob rau hauv ntau lawm yog tus yuam sij kom ntseeg tau qhov zoo ntawm ceramic khoom.
Post lub sij hawm: Jan-10-2025