Investigation of Particle size and Conductivity Properties of Nanocomposite Coatings Containing ITO Nanoparticles

Several anti-static nano-composite hybrid coatings based on epoxy-silane developed by sol-gel method are studied. The hybrid sols are prepared by hydrolysis and condensation of GPTMS and TMOS precursors in presence of an acid, as catalyst, and EDA as curing agent. Considering its good electrical conductivity, Indium Tin Oxide (ITO) nanoparticles are used as antistatic agents. To improve the distribution/ dispersion of ITO nanoparticles in the polymer matrix, the surface of nanoparicles is modified with silane groups (m-ITO). The antistatic properties of the coatings, containing various amounts of m-ITO nanoparticles, are investigated through surface electrical resistivity measurements. Laser light scattering (LLS) was used to examine the mean value of particle size range in the solution. The cubic shape and nanometric size of the nanoparticles in the hybrid coatings are monitored by transmission electron microscopy (TEM).

Keywords:

Nano-composite , Antistatic- Coatings , Hybrid , Conductivity Properties , ITO Nanoparticles