Sodium Carboxymethyl cellulose, Askiv Cov tsiaj ntawv luv los, yog ib yam tshuaj tsw qab, yog ib qho kev lag luam daj ua los ntawm cov khoom lag luam ntuj zoo li cov khoom siv. Cov. CMC muaj cov khoom siv solubility zoo thiab tuaj yeem yaj mus rau hauv cov pa hluav taws xob thiab tsis sib xws hauv cov dej txias thiab dej kub.
1. Cov lus qhia luv luv rau daim ntawv thov CMC hauv Ceramics
1.1. Daim ntawv thov CMC hauv Ceramics
1.1.1, Daim Ntawv Thov Kev Siv
CMC muaj cov qauv sib txawv polymer polymer. Thaum CMC ntxiv rau dej, nws pab pawg hydrophilic (-coona) sib txuas nrog dej los ua txheej txheem kev ua kom tau ib txheej kev ua si, yog li ntawd cmc molecules tau maj dispersed hauv dej. CMC Polymers cia rau ntawm hydrogen khi thiab van der waagals rog. Cov nyhuv ua cov qauv network, yog li qhia cohesion. Lub cev-tshwj xeeb CMC tuaj yeem siv los ua kev zam, yas, thiab tus neeg sawv cev rau lub cev ntsuab hauv kev lag luam ntsuab. Ntxiv tus nqi tsim nyog ntawm CMC mus rau lub billet billet ntawm lub billet, ua kom muaj lub zog yooj yim, thiab nce cov khoom lag luam zoo ntawm cov nqi ntawm ceramics thiab txo cov nqi tom qab. Cov. Nyob rau tib lub sijhawm, vim ntxiv rau ntawm CMC, nws tuaj yeem nce lub cev ua kom nrawm thiab txo cov zog ntau lawm. Nws kuj tseem tuaj yeem ua kom lub noo noo hauv lub billet yaj evaporory thiab tiv thaiv kom qhuav thiab tawg. Tshwj xeeb tshaj yog thaum nws tau thov rau loj-loj loj-loj loj pob zeb bille thiab polished cib bricets, cov nyhuv tseem zoo dua. pom tseeb. Piv nrog rau lwm cov neeg sawv cev ntsuab lub cev txhawb cov neeg sawv cev, lub cev ntsuab tshwj xeeb CMC muaj cov yam ntxwv hauv qab no:
(1) Tus nqi me me ntxiv: qhov ntxiv feem ntau yog tsawg dua 0.1% yog 1/5 txog 1/3 ntawm lwm lub cev txhawb zog, thiab tus nqi tuaj yeem txo tib lub sijhawm.
(2) Cov khoom siv hluav taws zoo: yuav luag tsis muaj ntoo tshauv tom qab hlawv, thiab tsis muaj qhov tseem ceeb, uas tsis cuam tshuam rau cov xim ntawm seem.
(3) Cov khoom siv tsis txaus siab zoo: Tiv thaiv kom tsis txhob muaj cov ntaub ntawv nyoos thiab cov xim pleev xim los ntawm kev sib txuas, thiab ua kom cov paste disbersy.
(4) Kev tawm tsam tiv thaiv puas tsuaj: nyob rau hauv cov txheej txheem ntawm pob milling, cov molecular saw tsis muaj kev puas tsuaj tsawg dua.
1.1.2, ntxiv txoj kev
Qhov kev ntxiv ntawm cmc hauv lub billet yog 0.03-0.3%, uas tuaj yeem hloov kho kom tsim nyog tau raws li cov kev xav tau tiag tiag. Rau cov av nkos nrog ntau ntawm cov khoom nyoos ntawm cov mis, cmc tuaj yeem ntxiv rau cov av nkos thiab tsis muaj kev nyuaj siab rau cov pob zeb uas muaj kev sib tw, lossis ua ntej ua ntej rau pob zeb ua ke, yog li tsis muaj kev nyuaj rau lub pob zeb ua ke, yog li tsis muaj kev nyuaj siab ntawm 1:30 ntxiv rau pob zeb ua ke, yog li tsis txhob nyuaj rau pob zeb thiab ua ntej ua ntej 1-5 teev ua ntej milling.
1.2. Daim ntawv thov CMC hauv ci slurry
1.2.1. Daim Ntawv Thov Kev Siv
CMC rau ci slurry yog lub stabilizer thiab binder nrog kev ua tau zoo heev. Nws yog siv nyob rau hauv qab ci thiab sab saum toj ci ntawm cov vuas luaj ceramic, uas tuaj yeem ua rau kev sib raug zoo ntawm lub zog ntawm lub ntsej muag ci ntsa iab thiab lub cev. Vim tias lub ntsej muag ci slurry yog yooj yim rau precoipitate thiab muaj cov tsis zoo thiab tiv thaiv lub xeev ruaj khov heev. Tom qab ntxiv CMC, qhov nro ntawm lub ci tuaj yeem nce los ntawm lub ntsej muag ntsuab, thiab kev tawg ntawm lub zog ntawm lub cev ntsuab tom qab glazing tuaj yeem zam tau. , Tus pinhole tshwm sim rau ntawm lub ci saum npoo av kuj tseem tuaj yeem txo qis tom qab tua hluav taws.
1.2.2.2. Ntxiv Txoj Kev
Qhov ntau ntawm CMC ntxiv rau hauv qab ci thiab sab saum toj ci yog feem ntau 0.08-0.30%, thiab nws tuaj yeem hloov kho raws li kev xav tau tiag tiag thaum siv. Ua ntej ua CMC mus rau hauv 3% kev daws teeb meem. Yog tias nws yuav tsum tau muab cia rau ob peb hnub, txoj kev daws teeb meem yuav tsum tau muab ntxiv nrog tus nqi ntim khoom, khaws cia rau ntawm qhov kub thiab txias, thiab tom qab ntawd tov nrog lub ntsej muag ci.
1.3. Daim ntawv thov CMC hauv Printing ci
1.3.1. Qhov tshwj xeeb CMC rau luam ntawv ci tau zoo thickening, dispersibility thiab kev ruaj khov. Cov cuab yeej tshwj xeeb CMC tau txais cov cuab yeej tshiab, txo cov txiaj ntsig zoo nkauj, thiab luam tawm zoo heev thaum ua haujlwm, cov qauv ntshiab, thiab xim ntshiab.
1.3.2. Qhov dav dav ntxiv tus nqi ntawm ntxiv luam ntawv ci yog 1.5-3%. CMC tuaj yeem cuam tshuam nrog ethylene glycol thiab tom qab ntawd ntxiv dej kom nws ua ntej yaj. Nws kuj tseem tuaj yeem ntxiv nrog 1-5% sodium tripolyphosphate thiab cov khoom siv xim ua ke. Sib tov qhuav, thiab tom qab ntawd yaj nrog dej, yog li txhua yam ntaub ntawv tuaj yeem ua rau cov neeg tau ua tiav.
1.4. Daim ntawv thov CMC nyob rau hauv oozing ci
1.4.1. Daim Ntawv Thov Kev Siv
Los ntshav glaze muaj ntau cov ntsev soluble, thiab qee qhov ntawm lawv yog me ntsis acidic. Qhov tshwj xeeb ntawm CMC rau los ntshav ci muaj kua qaub zoo heev, uas tuaj yeem ua kom lub pencosity zoo kawg nkaus, uas tuaj yeem ua kom lub piscosity stability, uas tuaj yeem tiv thaiv nws kom tsis txhob raug puas vim kev hloov pauv ntawm viscosity. Nws cuam tshuam cov xim sib txawv, thiab dej solubility, mesh perry rau los ntshav tshwj xeeb heev, uas yog kev muaj kev ruaj khov los tswj kev sib luag ntawm lub ntsej muag tsw qab.
1.4.2. Ntxiv Txoj Kev
Dissolve CMC nrog ethylene glycol, ib feem ntawm cov dej thiab cov neeg sawv cev ua ntej, thiab tom qab ntawd sib tov nrog cov xim tsis muaj kev daws teeb meem.
2. Cov teeb meem uas yuav tsum tau them sai sai rau hauv kev tsim cov CMC hauv Ceramics
2.1. Hom kev sib txawv ntawm CMC muaj cov haujlwm sib txawv hauv kev tsim cov ceramics. Kev xaiv yog tau ua tiav lub hom phiaj ntawm kev lag luam thiab kev ua haujlwm siab.
2.2. Hauv nplaim ci thiab luam ntawv pom kev zoo, koj yuav tsum tsis txhob siv Great-Purity Coll, thiab muaj cov kua zaub kom zoo nkauj kom pom kev loj los tiv thaiv ci thiab pinholes tshwm rau saum npoo. Nyob rau tib lub sijhawm, nws kuj tseem tuaj yeem tiv thaiv qhov tshwm sim ntawm plugging net, tsis zoo txheej thiab xim sib txawv thaum siv.
2.3. Yog tias qhov ntsuas kub siab lossis lub ntsej muag ci ntsa iab yuav tsum tau muab tso rau ntev, cov tshuaj tiv thaiv cov tshuaj tiv thaiv yuav tsum tau ntxiv.
3. Kev tshuaj xyuas cov teeb meem tshwm sim ntawm CMC hauv Ceramic ntau lawm
3.1. Lub fluidity ntawm cov av nkos tsis zoo, thiab nws nyuaj rau tso cov kua nplaum.
Vim nws tus kheej viscosity, cmc yuav ua rau cov av nkos viscosity kom dhau siab dhau, ua rau nws nyuaj tso cov av nkos. Kev daws teeb meem yog kho tus nqi thiab hom coagulant. Qhov kev pom zoo hauv decoagulant mis tau zoo: (1) sodium tripolyphosphate 0.3%; (2) sodium tripolyphosphate 0.1% + dej iav 0.3%; (3) Humic Acid Sodium 0.2% + sodium tripolyphosphate 0.1%
3.2. Lub ci slurry thiab luam ntawv number case yog nyias.
Cov laj thawj yog vim li cas lub ci ci slurry thiab luam ntawv tus number case yog cov tshuaj ntsuab yog li hauv qab no: (1) Cov kua nplaum ci ntsa iab lossis luam tawm cov kab mob, uas ua rau CMC tsis raug. Kev daws teeb meem yog kom huv si ntxuav lub thawv ntawm ci slurry lossis number case, lossis ntxiv tshuaj tshuaj xws li formaldehyde thiab phenol. (2) Nyob rau hauv kev nruam stirring nyob rau hauv lub shear zog, lub viscosity txo. Nws raug nquahu kom ntxiv CMC aqueous daws los kho thaum siv.
3.3. Muab cov tshij net thaum siv graze.
Txoj kev daws teeb meem yog kho tus nqi ntawm cmc kom cov luam ntawv ntawm lub tshuab hluav taws xob yog ib nrab, thiab yog tias tsim nyog, ntxiv me me ntawm cov dej kom do tusyees.
3.4. Muaj ntau lub sijhawm ntawm kev thaiv kev sib txuas thiab tu.
Kev daws teeb meem yog los txhim kho lub pob tshab thiab solubility ntawm CMC; Tom qab cov roj luam tawm tau npaj, dhau los ntawm 120-mesh sab cib, thiab cov tshuab luam ntawv cov roj tseem yuav tsum dhau los ntawm 100-120-mesh sab cib; Kho cov viscosity ntawm cov ntawv luam tawm greed.
3.5. Cov dej tuav tseg tsis zoo, thiab cov npoo ntawm lub paj yuav yog pulverized tom qab luam ntawv, uas yuav cuam tshuam rau kev luam tawm tom ntej.
Kev daws teeb meem yog kom nce cov glycerin hauv cov txheej txheem roj av roj; Siv cov viscosity hauv nruab nrab thiab qis viscosity CMC nrog kev hloov pauv siab (zoo hloov chaw ua haujlwm) los npaj cov roj luam ntawv.
Lub sij hawm Post: Feb-22-2025