How Contact Angle Measurement Can Help to Quantify Outdoor Weathering Effects on Wood Paints

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Wood is still one of the most important materials in our life due to its abundance and favorable material properties. However, unprotected wood easily undergoes shrinkage or swelling and even biological or chemical degradation during outdoor utilization. A huge variety of paint formulations have been developed to protect wood surfaces by improving hydrophobicity and dimensional stability.

A huge variety of paint formulations have been developed to protect wood surfaces by improving hydrophobicity and dimensional stability. One of the main components in wood paints is binders which have an important effect on the performance of paints. A very common and widely used naturally derived paint binder is linseed oil. Linseed oil belongs to the class of drying oils with a high drying power, which can form a solid and cohesive film via autoxidation and crosslinking polymerization. Paints based on linseed oils binders are furthermore attractive coming from renewable sources. Nevertheless, the prolonged drying time of linseed oil still impedes its application. Recently, Sansonetti et al. studied the properties of linseed oil-based paints and their utilization in wood surfaces protection.