High viscosity tshwm sim los ntawm pigments stems los ntawm inter-particle kev sib txhuam thiab tsis zoo compatibility nrog lub tsheb. Ib txoj hauv kev yooj yim rau kev tsim thiab txheej txheem yog qhov tseem ceeb. Ntawm no peb muaj 4 lub tswv yim rau koj.
1. Siv cov Dispersants kom zoo (tseem ceeb tshaj)
Qhov no yog kauj ruam ua tau zoo tshaj plaws. Hyperdispersants (siab-molecular-polymers hnyav)) adsorb mus rau cov xim xim, tsim kom muaj kev cuam tshuam tsis zoo uas tiv thaiv flocculation thiab txo qis viscosity. Ua cov kev ntsuam xyuas ntaiv kom pom qhov zoo tshaj plaws, feem ntau ntawm 5-20% txheeb ze rau pigment hnyav.
2. Optimize Pigment Xaiv
Cov pigments uas muaj cov roj tsawg nqus los yog cov khoom uas muaj qhov chaw- kho (xws li, nrog silica lossis alumina). Cov no yooj yim dua wetted los ntawm cov resin, txo cov viscosity pab los ntawm qhov pib.
3. Kho qhov Ink Formulation
Binder: Xaiv qis-viscosity, siab- cov khoom resins.
Solvent System: Txhim kho qhov sib piv ntawm cov kuab tshuaj tseeb thiab cov diluents kom tswj tau qhov hnyav thaum txo cov viscosity.
Pigment Loading: Txo cov Pigment Volume Concentration (PVC) ntau npaum li cov xim muaj zog tso cai.
4. Kho cov txheej txheem Dispersion
Xyuas kom txaus ua ntej -dispersion kom tawg agglomerates ua ntej milling. Siv cov cuab yeej milling kom zoo thiab tsis ua kom ua tiav qhov loj me me yam tsis dhau - ua, uas tuaj yeem ua rau rov ua dua -flocculation.
Tswv yim thawj kauj ruam: kuaj xyuas qhov ua rau.
Dilute ib tus cwj mem me me nrog cov kuab tshuaj sib xws. Yog tias viscosity poob qis, pigment flocculation yog thawj qhov teeb meem, thiab dispersant yog koj cov tshuaj. Yog tias tsis yog, tshuaj xyuas resin viscosity lossis pigment loading.
