CaCO3 안료의 분산 안정성에 대한 용제의 영향

이근대; 류영철; 서차수; 홍성수; 안병현; 문명준

Journal of the Korean Industrial and Engineering Chemistry, Vol.8, No.2, 252-261, April, 1997

Export Citation

CaCO3 안료의 분산 안정성에 대한 용제의 영향

Effect of Solvent on the Dispersion Stability of CaCO₃ Pigment

이근대, 류영철, 서차수, 홍성수, 안병현, 문명준

초록

여러 종류의 용제와 수지용액에 있어서의 CaCO₃ 안료의 분산 안정성을 Dynometer를 이용하여 조사하였다. Dynometer를 이용하여 비교적 단시간에 분산계의 분산 안정성을 평가할 수 있었으며, Dynometer를 이용찬 분산 안정성 평가로부터 구한 CaCO₃ 안료의 용해성 파라미터, δ는 11.62(δ_d=8.04, δ_p=5.05, δ_h=6.70)이었다. 안료와 친화력이 약한 용제가 첨가되는 경우 수지 용액내에서의 안료표면에의 수지 흡착층을 증가시켜 수지 용액내에서의 분산 안정성을 증가시켰다. 수지 용액 제조시 소량 첨가된 용제도 안료를 포함한 전체 분산계의 유동성과 분산 안정성에 큰 영향을 미친다는 것을 알 수 있었다.

The effect of solvent on the dispersion stability of CaCO₃ 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, δ, of CaCO₃ determined from dispersion stability was 11.62(δ_d = 8.04, δ_p = 5.05, δ_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.

[References]

Sato T, J. Coat. Technol., 51(657), 79 (1979)
Sato T, J. Coat. Technol., 65(825), 113 (1993)
Hedgus CR, Kamel IL, J. Coat. Technol., 65(821), 49 (1993)
Ellis WH, "Solvents," Federation Series on Coatings Technology, D. Brezinski and T.J. Miranda, eds., 1, Philadelphia (1986)
Shareef KMA, Yaseen M, Prog. Org. Coat., 13, 347 (1985)
Hansen CM, J. Paint Tech., 39(511), 505 (1967)
Shareef KMA, Yaseen M, Mahmood M, Reddy PJ, J. Coat. Technol., 58(733), 35 (1986)
Asbeck WK, J. Coat. Technol., 49(635), 59 (1977)
Raju KVS, Yaseen M, J. Coat. Technol., 64(824), 45 (1992)
Sato T, J. Coat. Technol., 67(847), 69 (1995)
Ziegel KD, J. Colloid Interface Sci., 29, 72 (1969)
Turner GPA, "Introduction to Paint Chemistry and Principles of Paint Chemistry," 3rd ed., 103, Chapman and Hall, NY (1988)
Idogawa H, Shimizu O, Esumi K, J. Coat. Technol., 65(823), 67 (1993)

[Referenced By]

[1] Sato T, J. Coat. Technol., 51(657), 79 (1979)

[2] Sato T, J. Coat. Technol., 65(825), 113 (1993)

[3] Hedgus CR, Kamel IL, J. Coat. Technol., 65(821), 49 (1993)

[4] Ellis WH, "Solvents," Federation Series on Coatings Technology, D. Brezinski and T.J. Miranda, eds., 1, Philadelphia (1986)

[5] Shareef KMA, Yaseen M, Prog. Org. Coat., 13, 347 (1985)

[6] Hansen CM, J. Paint Tech., 39(511), 505 (1967)

[7] Shareef KMA, Yaseen M, Mahmood M, Reddy PJ, J. Coat. Technol., 58(733), 35 (1986)

[8] Asbeck WK, J. Coat. Technol., 49(635), 59 (1977)

[9] Raju KVS, Yaseen M, J. Coat. Technol., 64(824), 45 (1992)

[10] Sato T, J. Coat. Technol., 67(847), 69 (1995)

[11] Ziegel KD, J. Colloid Interface Sci., 29, 72 (1969)

[12] Turner GPA, "Introduction to Paint Chemistry and Principles of Paint Chemistry," 3rd ed., 103, Chapman and Hall, NY (1988)

[13] Idogawa H, Shimizu O, Esumi K, J. Coat. Technol., 65(823), 67 (1993)