چكيده به لاتين
The use of hydrophobic coatings is crucial in preventing contaminants from affecting the performance of insulating equipment. These coatings enhance longevity and efficiency by reducing leakage current and sparking due to contaminant accumulation. Achieving super hydrophobicity is key, which involves altering both chemical structure and surface morphology. Recent advancements involve using nanoparticles to create nano-coatings, particularly with silicon rubber or polyurethane, the latter being favored for its improved properties over silicon rubber. Polyurethane coatings are cost-effective, offer good adhesion and stability, and are easily applicable. To further enhance these coatings, fillers like silica and magnesium hydroxide are integrated, with studies focusing on their impact on various coating properties. Insulators in electrical systems demand high breakdown voltage, resistance to water penetration, and low dielectric loss coefficients. Ceramic and glass insulators, commonly used worldwide, face issues like electrical discharge in humid and polluted areas. Solutions range from cleaning methods to altering the insulator's nature or applying self-cleaning coatings. These efforts have involved diverse methods such as using nano and microparticles, hydrophobic compounds, or employing the sol-gel approach. Reinforcing polymer coatings with fillers is crucial, and various oxide particles have been explored for this purpose. Magnesium hydroxide stands out due to its beneficial dielectric properties, flammability resistance, thermal stability, and its ability to enhance mechanical properties in polymer systems. Modifiers are utilized to achieve the desired hydrophobicity in these coatings, recognizing its critical importance. In this study, by changing the chemistry and roughness of the surface, the composite coating is protected against environmental pollution, damage caused by sunlight, temperature changes and rainfall. Furthermore, the effect of adding silica and magnesium hydroxide particles with different sizes and shapes on different coating properties such as hydrophobicity, flame resistance, longevity, hardness, tensile strength, tear strength and electrical properties such as dielctric loss coefficient, dielctric constant and strength will be investigated.
