Influence of environmental factors on the performance of wood coating systems

Abstract

Lacquers are widely sold coating products, purchased globally in large quantities by both industrial and domestic consumers. They are commonly used to protect and color wood surfaces. In this study were considered two categories of products used for non-industrial scopes to protect any wood surface which can be found inside or outside of a house. The acrylic impregnate, a water-based product, penetrates wood fibers, helping to delay or even prevent the action of microorganisms. The alkyd lacquer is the product which, after drying, ensures the formation of a glossy film and a long-lasting protection. The influence of the number of coating layers and the influence of the action of environmental factors were evaluated through exposure in four climatic zones for 18 months. The characterization techniques applied were: thermogravimetric analyzes (TGA), water contact angle value determination, energy-dispersive X-ray spectroscopy (EDX) and Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR) spectroscopy.