Understanding indentation, scratch and wear behavior of UV-cured wood finishing products

In the wood furniture and flooring industry, protective aesthetic properties of final product often rely, at least partially, on coatings applied to surface. For flat surfaces, UV-cured are preferred due their many advantages, such as fast curing times, low volatile organic compound (VOC) emissions, energy consumption high crosslinking densities. To increase durability interior products, behavior while subjected wear deterioration has be understood in order enhanced. Depending type solicitation, mar (i.e. shallow defects), scratches or indentations can formed, which impact coating's appearance shatter perception whole product. this work, formulations based different monomer-oligomer couples were prepared photo-polymerized investigate performances. First, glass transition temperature density determined understand contribution both components polymeric network formed upon UV-curing. Then, hardness, abrasion, scratch resistances studied. The results showcased importance monomer oligomer structure, functionality main physical properties. experiments, hard brittle tend display failures lower loads than soft ductile ones. friction experiments also caused subsurface tearing fissuring generated several fractures harder Furthermore, best overall mechanical resistance was obtained for with density, a correlation found between hardness coatings. Interestingly, investigation tracks after revealed significant amount information about coatings' under various loads. • Monomer/oligomer able form tightness UV-curing formulated influence topcoat performance finishing system evaluated A relation identified Two populations very responses distinguished, Wear highlighted particular from