Análise físico-química e desempenho de revestimentos epóxi em substratos de aço carbono e alumínio em iates

Abstract

The marine environment imposes extreme conditions that accelerate the degradation of materials used in shipbuilding. Factors such as high temperatures, humidity, salinity, sea spray, and climatic variations intensify corrosive processes, compromising structural integrity and significantly reducing the lifespan of equipment and metal hulls. In this context, marine painting acts as an essential protective barrier, minimizing the effects of corrosion and preserving the carbon steel and aluminum substrates commonly used in the naval industry. To ensure the system's efficiency, physical-chemical controls and quality inspections are carried out, including measurements of temperature, humidity, dew point, adhesion tests, and dry film thickness. The substrates analyzed were ASTM A36 carbon steel and 5083 aluminum alloy. The methodology was based on the practical monitoring of the painting process on a yacht, recording the stages of surface preparation, application of epoxy coatings, and monitoring of environmental conditions. The study also seeks to correlate the monitored physical-chemical parameters with the performance of the applied coatings, providing technical support that can contribute to optimizing the durability and performance of naval structures.