Dab tsi yog qhov txawv ntawm Wetting Agents thiab Dispersants?

Ntawm ntau yam txheej txheej additives, wetting agents thiab dispersants yog ob qho tib si surfactants, yog li qee zaum nws nyuaj rau qhov txawv ntawm qhov sib txawv ntawm ob. Tsis tas li ntawd, vim tias qee cov tshuaj ntxiv tam sim no muaj ob qho tib si ntub dej thiab tawg ua haujlwm, qee cov khoom hu ua wetting dispersants. Cov khoom ntub dej ntub ua rau nws nyuaj rau kev paub qhov txawv ntawm lawv cov teebmeem. Tab sis tseem muaj qhov sib txawv ntawm cov neeg ua dej ntub dej thiab cov dispersants lawv tus kheej.

Firstly, lub luag hauj lwm ntawm ob yog txawv. Kev ntub dej feem ntau yog hais txog qhov sib txawv ntawm cov kua dej ntawm cov khoom nto. Hauv kev tsim cov xim, nws suav nrog kev hloov huab cua ntawm cov xim xim thiab cov khoom ntim nrog dej, tso cai rau cov xim thiab cov khoom muab tub lim kom nkag mus rau theem aqueous sai. Qhov no yog txheej txheem luv luv. Dispersion yog hais txog cov txheej txheem ntawm kev sib cais cov xim ntawm ib leeg. Hauv kev tsim cov xim pleev xim, nws hais txog qhov ruaj khov ntawm cov xim thiab cov khoom muab tub lim hauv cov dej hauv cov dej hauv cov khoom me me, sib npaug sib npaug, thiab tsis sib sau ua ke ntxiv lawm. Qhov no yog ib txoj kev ntev heev. Kev sib xyaw ua ke ntawm ob tuaj yeem muaj kev sib koom ua ke, tso cai rau cov xim thiab cov khoom ntim kom ruaj khov rau hauv ib daim ntawv me me hauv txheej. Qhov no tuaj yeem txhim kho kev ua haujlwm ntawm kev sib tsoo thiab dispersion hauv cov txheej txheem tsim khoom, txo lub sijhawm sib tsoo, thiab txhim kho cov xim xim thiab npog lub zog ntawm pigments thiab muab tub lim. Nws ncaj qha cuam tshuam rau lub pob tshab, viscosity, flowability, mechanical zog, thiab stability ntawm txheej.

Qhov thib ob, cov qauv molecular ntawm cov neeg ua dej ntub dej thiab cov dispersants kuj txawv. Qhov hnyav molecular ntawm cov neeg ua dej ntub dej yog me me, ua rau lawv yooj yim rau kev tsiv teb tsaws thiab ua haujlwm zoo dua los txo qhov nro ntawm cov xim. Qhov hnyav molecular ntawm dispersants yog qhov loj, uas tuaj yeem ua kom zoo dua steric hindrance, tiv thaiv pigment flocculation, thiab ua kom lub dispersion system nyob rau hauv ib qho chaw ruaj khov.
Dispersants thiab wetting agents yog indispensable additives rau txheej khoom. Tsuas yog thaum ob qho tib si siv ua ke tuaj yeem ua tau zoo dua qub, kev ruaj ntseg, thiab cov txheej txheem ua tau zoo.