2.6 New Generation Binders for Deck Finishing
(Room 240-242)
09 Apr 18
5:00 PM
-
5:30 PM
Tracks:
Session 2: Wood Coatings
Although the decking industry is seeing changes in the types of materials used in new construction / rebuild, for example wood-plastic based composites, the use of stains and sealers remains dominant for the maintenance sector. Good aesthetics in combination with superior protection, penetration and wear are persistent themes in the decking market. It is therefore essential that these wood finishes provide both long lasting beauty and durability.
Aligned with the trend to more highly durable deck stain systems, we’ve seen a shift in technology from waterborne systems based on oil/alkyd to acrylic modified oil/alkyd and now to oil/alkyd modified acrylics. Allnex has developed an acrylic based core/shell technology where the composition of the core can be varied from homogeneous to gradient to multicore while the shell can be widely varied in terms of hydrophilicity and hydrophobicity. These variations enable the balancing of hardness-flexibility as well as penetration, flow & levelling, the properties needed to achieve high levels of both performance and appearance.
In this paper, this novel acrylic core/shell technology will be described. Fundamental considerations as well as performance properties of deck stains based on several prototype binders from this exciting new technology will be presented.