Wear resistant coatings for wood surfaces based on UV nano-composite systems; Part 1: Scratch resistant nano-composite coatings without corundum
: 37 - 42
To maintain future markets for the German timber converting industry highest quality is a key prerequisite. In this context scratch and abrasion resistant coatings will play a decisive role. As result of a common development project, IOM Leipzig and IHD Dresden have developed nearly solvent-free, scratch and abrasion resistant coatings for wood surfaces which have been modified with hard nano-particles. In addition micro-scaled alumina particles can be added to the nano-composite coating. Part 1 of this paper describes the preparation and performance of nano-composite coatings. Using a in-situ organophilation of silica nano-particles in UV curable acrylate systems, wood coatings can be generated which show superior mechanical properties. In comparison to reference coatings, abrasion and scratch resistance, micro hardness, flexibility, impact and mar-resistance improved considerably. Part 2 is published in the following issue and deals with corundum containing nano-composite coatings.