Abstract
The impact of toxicological concerns on the design of all types of modern anti-corrosive primers has been significant as new raw materials, especially pigments, displace their more traditional toxic forebears. In many cases, these raw materials are less efficient in coatings, and, more often than not, performance is system specific. If performance and cost effectiveness are to be optimized, attention must be given to well grounded formulation design practices for each of the three classes of metal primers (zinc-rich primers, barrier primers, and inhibitive primers). One of the important aspects of such design criteria is optimized PVC/CPVC placement. This is specific to the nature of the primer type involved and changes to suit the protective mechanism on which each primer type relies. This article reviews the mechanisms whereby each type of primer affords protection and discusses the role of PVC/CPVC placement to enhance performance.
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References
Laporte, Trade Literature Phosguard® Pigments (1999).
Hare, C.H., “Corrosion Control Using Chromate and Phosphate Pigments,”Paint Coat. Ind., p. 50 (August 1997).
Asbeck, W.W. and VanLoo, M., “Critical Pigment Volume Relationshis,”Ind. Eng. Chem., 41, No. 7, 1470 (1949).
Asbeck, W.K., “A Critical Look at CPVC Performance and Application Properties,”Journal of Coatings Technology,64, No. 806, 47 (1992).
Hegedus, C.R. and Eng, A.T., “Coating Formulation Development Using Critical Pigment Volume Concentration Prediction and Statistical Design,”Journal of Coatings Technology,60, No. 767, 77 (1988).
Hoy, K.L., “Coalescence and Film Formation of Latexes,”Journal of Coatings Technology,68, No. 853, 33 (1996).
Floyd, F.L. and Holsworth, R.M., “CPVC as Point of Phase Inversion in Latex Paints,”Journal of Coatings Technology,64, No. 806, p. 65 (1992).
Chiang, C.P. and Rehfeldt, T.K., “Scanning Laser Acoustic Microscopy of Latex Paint Films,”Journal of Coatings Technology,58, No. 737, 27 (1986).
Bierwagen, G.P. and Hay, T.K., “The Reduced Pigment Volume Concentration as an Important Parameter in Interpreting and Predicting the Properties of Organic Coatings,”Prog. Org. Coat., #3, 281 (1975).
Braunshausen, R.W. Jr., Baltrus, R.A., and DeBolt, L., “A Review of Methods of CPVC Determination,”Journal of Coatings Technology,64, No. 810, 51 (1992).
Perera, D.Y., “Stress Phenomena in Organic Coatings,” Chap. 49 inPaint and Coatings Testing Manual, 14th Edition, American Society for Testing Materials, Philadelphia, PA, 1995.
Steig, F.B., “Density Method for Determining the CPVC of Flat Latex Paints,”Journal of Coatings Technology, 55, No. 696, 111 (1983).
Hare, C.H., Steele, M., and Collins, S.P., in press.
Hare, C.H. and Wright, S.J., “Anti Corrosive Primers based on Zinc Flake,”Journal of Coatings Technology,54, No. 693, 65 (1982).
Skerry, B.S., Chen, C.T., and Ray, C.J., “Pigment Volume Concentration and Its Effect on the Corrosion Resistance Properties of Organic Paint Film,”Journal of Coatings Technology,64, No. 806, 77 (1992).
Leblanc, O., “Successful Formulation of Primers Based on Non-Toxic Anticorrosive Pigments,”Surf. Coat. Int., p. 288 (August 1991).
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Hare, C.H., Kurnas, J.S. Reduced PVC and the design of metal primers. Journal of Coatings Technology 72, 21–27 (2000). https://doi.org/10.1007/BF02729973
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DOI: https://doi.org/10.1007/BF02729973