Abstract: The invention provides a method for separating submicron fraction of carbon nano-materials. The method includes grinding of the carbon nano-materials. Upon grinding, the carbon nano-materials are mixed in water to prepare a mixture. The mixture is then treated in an ultrasonic bath to prepare a suspension. The suspension is allowed to undergo a liquid sedimentation. After the liquid sedimentation, a supernatant is collected and filtered to obtain a solid residue of the submicron fraction of the carbon nano-materials.

Abstract: The invention provides a method for preparing an epoxy based coating composition. The method includes preparing a first dispersion including one or more colorants, one or more fillers and an epoxy based paint work material dispersed in a first portion of one or more solvents. The first dispersion is prepared by dispersing the one or more colorants and the one or more fillers in the epoxy based paint work material dispersed in the first portion of the one or more solvents. The method further includes preparing a second dispersion including one or more types of carbon nanotubes, a second portion of the one or more solvents and a hardener. The second dispersion is prepared by dispersing the one or more types of carbon nanotubes and the second portion of the one or more solvents in the hardener. Additionally, the method includes mechanically mixing the first dispersion and the second dispersion.

Abstract: The invention provides an alkyd resin based paint work composition comprising an alkyd resin based film forming material, one or more colorants, one or more fast-drying materials, fumed silica, one or more types of carbon nanotubes and one or more solvents. The invention also provides a method for preparing the alkyd resin based paint work composition.