Cov hmoov tej hub, cov kuab tshuaj, cov tshuaj sib faib, cov khi, cov yas, thiab, qhov uas xav tau, cov tshuaj defoamers thiab cov tshuaj ua kom muaj qib tau siv rau hauv cov txheej txheem ntau lawm ntawm cov txheej txheem ceramic.
Powder Ceramic Hmoov
Cov hmoov txhuv nplej siab ua rau feem ntau ntawm cov nplais casting, thiab nws cov yam ntxwv muaj qhov cuam tshuam ncaj qha rau qhov khoom kawg' kev ua tau zoo. Kev xaiv cov hmoov ceramic yog ua raws cov hauv paus ntsiab lus hauv qab no: (1) nruj me ntsis txwv cov ntsiab lus tsis huv ntawm cov hmoov ceramic. Vim tias cov tshuaj lom neeg muaj pes tsawg leeg thiab cov yam ntxwv ntawm cov hmoov ceramic yuav cuam tshuam lossis tseem tswj hwm qhov ntsws thiab microstructure ntawm cov khoom siv sintered, cov ntsiab lus tsis huv hauv cov hmoov ceramic yuav tsum tau ua tib zoo tswj. (2) Tswj nruj me me thiab cov duab ntawm cov hmoov ceramic. Qhov loj me me thiab cov duab ntawm cov hmoov ceramic muaj qhov cuam tshuam loj rau kev sib sau ua ke thiab cov slurry' tus yam ntxwv rheological. Txhawm rau ua kom cov hmoov me me nyob hauv lub cev ntsuab ntsuab, qhov loj me me yuav tsum me me li sai tau; txawm li cas los xij, qhov me me me me, qhov loj dua qhov tshwj xeeb hauv cheeb tsam, thiab xav tau cov organic ntxiv ntau ntxiv, uas ua rau muaj kev sib xyaw ua kom sib sib zog nqus sintering shrinkage thiab txo qis lub cev ntom ntom. Feem ntau, qhov zoo tshaj plaws ntawm cov khoom siv me me yog 1-4μm, thaj chaw tshwj xeeb yog 2-5m2/g, thiab cov khoom seem yog kheej kheej.
● Hnyav
Cov kuab tshuaj' lub hom phiaj tseem ceeb yog txhawm rau txhawm rau khi cov yas, yas, thiab lwm yam ntxiv, ua kom cov hmoov tawg, thiab muab cov slurry nrog qhov viscosity uas tsim nyog. Ua ntej yuav xaiv cov kuab tshuaj, cov kev xav hauv qab no yuav tsum tau txiav txim siab: (1) Nws muaj peev xwm ntawm kev faib cov dispersant, phau ntawv, thiab yas yas; (2) Nws muaj peev xwm ntawm dispersing cov hmoov ceramic; (3) Nws tswj hwm kev ruaj ntseg tshuaj hauv cov slurry, tiv thaiv tshuaj lom neeg nrog cov hmoov; (4) Nws tswj cov viscosity kom raug ntawm cov slurry; (5) Nws muaj peev xwm ua kom qhuav thiab hlawv tawm ntawm qhov kub kom tsim nyog; (6) Nws ua kom ntseeg tau tias qhov khoob khov kho yam tsis muaj qhov tsis xws luag; (7) Nws muaj kev nyab xeeb siv, e ib puag ncig muaj kuab paug tsawg heev, thiab tus nqi qis. Binary organic solvents, xws li ethanol/methyl cawv, ethanol/dej, thiab ethanol/trichlorethylene, feem ntau siv.
● Dispersion Agent
Cov qib uas cov hmoov ceramic tau tawg hauv cov kuab tshuaj muaj qhov cuam tshuam loj rau lub cev ntsuab' kev ua tau zoo. Vim tias qhov loj me me thiab lub zog siab saum npoo av ntawm cov hmoov ua haujlwm hauv kev tsim cov tshuaj molding, cov hmoov hmoov muaj lub siab nyiam rau polymerize, ua rau cov slurry tsis ruaj khov. Raws li qhov tshwm sim, cov khoom siv pov tseg yuav tsum suav nrog kev faib tshwj xeeb uas txwv cov qib ntawm kev sib sau ua ke thiab lub zog ntawm cov agglomerate. Lub dispersant' lub luag haujlwm tseem ceeb yog ua kom cov nplaim dej ntawm cov hmoov ceramic, txo qis' ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom, tuaj yeem txhim kho qhov muaj peev xwm tiv thaiv ntawm cov khoom, txhua qhov ua rau slurry' Phosphate esters, ethoxylates, herring roj, polyacrylic acid, polymethacrylic acid, thiab ntsev ammonium yog txhua yam nquag siv cov dispersants.
Izers Plasticizers thiab Binders
Cov ntawv nplaum tau siv los koom nrog cov khoom siv ceramic thiab muab lub cev ntsuab rau nws lub zog. Nws yuav tsum tau sau tseg tias phau ntawv xaiv xaiv yuav tsum sib xyaw cov kuab tshuaj raws li hauv qab no: nws yuav tsum muaj txiaj ntsig zoo rau cov kuab tshuaj volatilization thiab tsis ua npuas; nws yuav tsum muaj qhov kub hloov pauv yas kom ntseeg tau tias tsis muaj hws tshwm sim ntawm chav sov; nws yuav tsum muaj peev xwm ua kom ruaj khov cov slurry thiab tiv thaiv cov khoom tsim. Settlement' muaj nuj nqi. Cov yas yas tau siv los lav qhov zaj duab xis uas tsis muaj qhov khoob' kev hloov pauv tau, txhawm rau txo tus tuav' iav hloov pauv kub, thiab ua kom cov ntawv nplaum ntws qis dua. Thaum raug rau sab nraud quab yuam, cov saw hlau molecules kauj thiab ncab, nce qib kev deformation. PVB/DBP thiab PVA/PEG feem ntau siv cov ntawv txuas thiab yas sib xyaw ua ke, txawm hais tias ob lwm yam yas sib txuas ua ke kuj tseem siv tau, xws li PVB/DBP + DOP.
