Qhov sib txawv tseem ceeb ntawm kev kho thiab ziab yog tias nyob rau hauv cov txheej txheem kho, cua sov yog siv los yog tsim kom evaporate cov dej ntawm cov kuab tshuaj nyob rau hauv number case, uas tawm cov pigments qab ntawm lub substrate los muab xim, whereas, nyob rau hauv lub txheej txheem kom qhuav, number case yog solidified los ntawm cov kua rau cov khoom.
Kev kho thiab ziab yog cov txheej txheem tseem ceeb uas tshwm sim tom qab txheej txheej nrog nyias txheej ntawm cov xim tshwj xeeb.
Kev kho yog dab tsi?
Kev kho yog cov txheej txheem dej lossis cov kuab tshuaj uas tau evaporated los ntawm koj cov txheej. Cov txheej txheem no yog cais tag nrho ntawm cov txheej txheem ziab. Thaum twg peb pleev xim rau ntawm cov khoom siv, cov xim yuav dhau los ntawm cov txheej txheem tshuaj ntawm kev khi rau saum npoo. Nws tsis tau npaj siv rau kev siv txhua hnub kom txog thaum cov xim muaj kev sib raug zoo thiab tawv, uas txhais tau hais tias cov xim tseem tsis tau kho.
Piv txwv li, thaum lub tsheb uas nyuam qhuav tau txais kev pleev xim tsis tsim nyog siv rau hauv qhov qhib thiab taug kev los ntawm qhov chaw mus rau qhov chaw. Qhov no yog vim cov xim tsis tau npaj. Thaum lub sij hawm kho, nws yog ib qho tseem ceeb uas yuav tsum tau maj mam nrog rau qhov chaw ntawm qhov khoom. Txog thaum qhov kev sib txuas ua tiav no tshwm sim, qhov saum npoo tau yooj yim raug khawb lossis chips thiab tev tawm. Thaum lub sij hawm tus txheej txheem no, cov dej nyob rau hauv cov xim yuav evaporate, thiab lwm yam chemicals yuav hnov mob, ua rau cov xim khi rau saum npoo. Thaum nws kho tau tag nrho, cov khoom siv tom qab ntawd ntau ruaj thiab resistant. Yog li tam sim no peb tuaj yeem siv cov khoom siv rau txhua hnub.
Muaj ntau yam laj thawj rau qhov yuav tsum tau ua kom kho. Piv txwv li, hauv kev lag luam tsheb, qhov no feem ntau suav nrog cov haujlwm pleev xim thiab cov ntawv thov txheej hauv kev kho lossis txhim kho cov tsos ntawm lub tsheb. Tsis tas li ntawd, txheej txheej ceramic yog qhov kev xaiv nrov zuj zus uas ua rau kev kho tsheb yooj yim dua.
Drying yog dab tsi?
Kev ziab tuaj yeem piav qhia raws li daim ntawv thov lossis tsim cov cua sov kom evaporate cov dej ntawm cov kuab tshuaj hauv tus cwj mem, uas tawm cov pigments qab ntawm lub substrate los muab xim. Cov txheej txheem no hu ua evaporation thiab coalescence. Txhua cov xim pleev xim dej feem ntau ua kom qhuav.
Nyob rau theem thawj, evaporation tshwm sim. Thaum lub sij hawm no, cov dej tsis hloov pauv evaporate los ntawm cov xim zaj duab xis nyob rau hauv lub xub ntiag ntawm atmospheric tej yam kev mob. Feem ntau, dej nyiam evaporate sai. Tab sis cov kua evaporating qeeb yuav siv tau zoo li, thiab cov no hu ua co-solvents. Cov co-solvents no yog tsim los kom nyob twj ywm hauv cov xim pleev xim rau lub sijhawm ntev thiab muab cov khoom siv feem ntau uas yuav tsum tau ua ua ntej, thaum, thiab tom qab ua ntawv thov.
Theem ob yog theem coalescence. Nws tshwm sim tom qab cov kauj ruam evaporation. Tom qab feem ntau ntawm cov kua dej tsis hloov pauv tau evaporated, ib coherent xim zaj duab xis yog tsim los ntawm discrete particles ntawm ib tug polymer binder uas yog dispersed nyob rau hauv cov kua.
Muaj cov khoom xyaw hauv cov xim uas tsim nyog rau kev txo qis lossis tshem tawm qhov tsis zoo ntawm zaj duab xis uas pom thaum cov xim qhuav. Cov additives ntawm ib tug raug pleev xim muaj xws li dispersing agents, anti-setting agents, thiab emulsion stabilizers, uas kuj muaj nyob rau hauv lub formulation los pab tsim thiab stability ntawm cov xim.
Qhov txawv ntawm Kev Kho thiab ziab yog dab tsi?
Qhov sib txawv tseem ceeb ntawm kev kho thiab ziab yog tias nyob rau hauv txoj kev kho, cua sov yog siv los yog tsim kom evaporate cov dej ntawm cov kuab tshuaj nyob rau hauv tus number case, uas tawm cov pigments qab ntawm lub substrate los muab xim, whereas lub qhuav txheej txheem. Yuav tsum muaj qhov solidification ntawm tus number case los ntawm cov kua rau khoom. Ntxiv mus, curing tshwm sim thaum cov xim txheej tau mus txog qhov siab tshaj plaws hardness thiab 100% dryness, qhov ziab tshwm sim thaum cov kuab tshuaj evaporates los ntawm cov xim txheej, tawm hauv cov xim qhuav kom kov, tab sis nws yuav tsis yog 100% qhuav.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm kev kho thiab ziab hauv daim ntawv tab rau kev sib piv ntawm ib sab.
Summary – Curing vs Drying
Cov xim yog cov kua dej pigmented, liquefiable, los yog cov khoom sib xyaw mastic uas tuaj yeem hloov mus rau hauv cov yeeb yaj kiab tom qab daim ntawv thov mus rau lub substrate nyob rau hauv ib txheej nyias. Qhov sib txawv tseem ceeb ntawm kev kho thiab ziab yog tias nyob rau hauv kev kho, cua sov yog siv los yog tsim kom evaporate cov dej ntawm cov kuab tshuaj nyob rau hauv tus number case, uas tawm cov pigments qab ntawm lub substrate los muab xim, whereas ziab yuav ua rau lub solidification ntawm tus number case los ntawm cov kua. khov kho.
