Rheological, EMI and corrosion properties of epoxy coating with nanoparticle and conductive carbon black

Abstract The purpose of this paper was determining the effects two nanoparticles additions in a commercial epoxy coating system on rheology characterization. Two kinds hybrid organic–inorganic silicates (benzytallowdimethylammonium salts with bentonite) were studied, APA, C 14-16 organic chain and, HT, 2-4 chain. A 2 factorial design, categorical nanoparticules factors applied. experimental data viscosity fit to three different rheological constitutive models: Herschell-Bulkley, Carreau-Yasuda and Cross. best obtained by Herschel-Bulkley model. APA nanoparticle had substantial changes yield stress values, but no effect observed when HT been isolated. thixotropic models analyzed for system, better performance model parameters. presence nanoparticule reduced around 40% recovery time. addition properties coating. X-Rays Diffraction analyses done observe dispersions degree exfoliations system. crystalline peak lost all formulations. electromagnetic interference shielding attenuation 60% formulations high content both nanoparticles. improved hence, anticorrosion 720 h chloride solution. Corrosion resistance concentration carbon black