Preparation and characterization of antistatic coatings with modified BaTiO3 powders as conductive fillers

摘要

The antistatic coatings were prepared by using rare earths modified BaTiO3 powders as conductive fillers instead of the traditional metal additives. The composition and preparation technology of the antistatic coatings were researched. The effects of thinner, curing agent, dispersant, and conductive fillers on surface resistance and performances of the antistatic coatings were studied. The determined composition of the antistatic coatings was that of epoxy resin 10.00 g with curing agent 13%, BaTiO3 powders 5%, dispersant 2%, and thinner 4mlg~(-1). FTIR and SEM analyses illustrated that the dispersant agent and ultrasonic can make modified BaTiO3 powders in the coatings to disperse completely. The parameters of antistatic coatings were as following: surface resistance is 1.18 x 10~(10)Ω, dry time is 6.0 h, solid content is 94.0%, stiffness is 0.419, viscosity is 255 s, adhesive force is 3, and flexibility is 2. The antistatic coatings were prepared by using rare earths modified BaTiO3 powders will be prospective candidates for reducing static electricity.