Characterization and Application of Naturally Occurring Mineral Based Pigment in Surface Coating

Shweta Umale, Prakash Mahanwar

Department of Polymer and Surface Engineering, Institute of Chemical Technology, Mumbai, India.

DOI: 10.4236/jmmce.2012.1111117                

Abstract

New naturally occurring mineral based pigment of general formula Hg₂S have been processed and characterized for its application in surface coating. Various analytical protocol like XRD, FT-IR, SEM and CIE 1976 colour coordinate system have been performed for complete analysis of pigment. Characterizations using XRD, and CIE 1976 colour coordinate assessment reveal the formation of pigments displaying colours ranging from brick-red to dark-brown. The typical designed pigment samples have been evaluated for their mass tone/hiding power, tinting strength and weather resistance by coating on an MS steel panel. Optical, Chemical, Mechanical and performance properties of coating have been evaluated for its application. The results demonstrated that the dark-brown pigment obtained in the present study was found to be an interesting alternative to the existing classical toxic inorganic red pigments for surface coating applications.

Keywords

Light Fastness; Colour Value; Surface Coating; Dispersability; Refractive Index

Conflicts of Interest

The authors declare no conflicts of interest.

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