Isfahan University of Technology Journal of Advanced Materials in Engineering 2251-600X 39 3 2022 12 31 Investigation of the Effect of Adding Aluminum Trihydrate (ATH) Particles on Electrical and Hydrophobic Properties of Two-Part RTV Silicon Rubber Investigation of the Effect of Adding Aluminum Trihydrate (ATH) Particles on Electrical and Hydrophobic Properties of Two-Part RTV Silicon Rubber 117 128 2529 10.47176/jame.39.3.20871 FA A. Zolriasatein Non-Metallic Materials Research Group, Niroo Research Institute (NRI), Tehran, Iran. S. Navazani Non-Metallic Materials Research Group, Niroo Research Institute (NRI), Tehran, Iran. M. Rezaei Abdadchi Non-Metallic Materials Research Group, Niroo Research Institute (NRI), Tehran, Iran. N. Riahi Noori Non-Metallic Materials Research Group, Niroo Research Institute (NRI), Tehran, Iran. Journal Article 2022 12 31 In this paper, the effect of adding aluminum trihydrate (ATH) on electrical (including dielectric constant, dielectric loss and strength, volume and surface resistivity) and hydrophobic properties of two-part room temperature volcanized (RTV) silicone rubber resin coatings were investigated. For this purpose, the RTV-ATH nanocomposite was made by physical mixing and its electrical and hydrophobic properties were compared with those of pure RTV. The results showed an increase in the dielectric constant (from 3.11 to 4.13), the dielectric loss (by ~ 0.06) and the dielectric strength (by ~ 4 KV/mm) of the RTV-ATH composite compared to the pure RTV. Moreover, ATH increased volume resistivity and reduced the surface resistivity of composite coatings. On the other hand, by spraying of coatings, no improvement in the hydrophobicity class of composite coating compared to pure RTV was observed and both samples were standardized in the HC2 standard class. Structural analysis of samples was performed by X-ray diffraction, optical microscopy and scanning electron microscopy and the presence of the main phases in them was confirmed. In this paper, the effect of adding aluminum trihydrate (ATH) on electrical (including dielectric constant, dielectric loss and strength, volume and surface resistivity) and hydrophobic properties of two-part room temperature volcanized (RTV) silicone rubber resin coatings were investigated. For this purpose, the RTV-ATH nanocomposite was made by physical mixing and its electrical and hydrophobic properties were compared with those of pure RTV. The results showed an increase in the dielectric constant (from 3.11 to 4.13), the dielectric loss (by ~ 0.06) and the dielectric strength (by ~ 4 KV/mm) of the RTV-ATH composite compared to the pure RTV. Moreover, ATH increased volume resistivity and reduced the surface resistivity of composite coatings. On the other hand, by spraying of coatings, no improvement in the hydrophobicity class of composite coating compared to pure RTV was observed and both samples were standardized in the HC2 standard class. Structural analysis of samples was performed by X-ray diffraction, optical microscopy and scanning electron microscopy and the presence of the main phases in them was confirmed. https://jame.iut.ac.ir/article_2529_82ca5dd156cc926b2992f73c2896f761.pdf