Effect of Solvent on the Dispersion Stability of CaCO3 Pigment

CaCO3 안료의 분산 안정성에 대한 용제의 영향

  • 이근대 (부경대학교 공과대학 표면공학과) ;
  • 류영철 (부경대학교 공과대학 표면공학과) ;
  • 서차수 (부경대학교 공과대학 표면공학과) ;
  • 홍성수 (부경대학교 공과대학 화학공학과) ;
  • 안병현 (부경대학교 공과대학 재료공학과) ;
  • 문명준 (부경대학교 공과대학 표면공학과)
  • Received : 1996.11.21
  • Accepted : 1997.02.17
  • Published : 1997.04.10


The effect of solvent on the dispersion stability of $CaCO_3$ pigment in various solvents and resin solutions has been studied using Dynometer. Dispersion stability can be estimated in a relatively short time by means of Dynometer and the solubility parameter, ${\delta}$, of $CaCO_3$ determined from dispersion stability was 11.62(${\delta}_d=8.04$, ${\delta}_p=5.05$, ${\delta}_h=6.70$). The solvent showing weaker interaction with pigment increased the adsorption of resin on to the pigment, resulting in higher dispersion stability in resin solution. It was found that the rheological properties and dispersion stability of pigmented resin solution were depending strongly on the solvent added in small amount in the formulation.



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