Combinatorial Study on the Recent Developments of Acrylic Urethane Bulk Properties and their Effect on Hybrid Siloxane-Urethane Coatings for Marine Fouling-Release Applications

摘要

The effect of acrylic polyol composition on the performance properties of crosslinked siloxane-urethane coatings were explored using combinatorial and high throughput methods. To provide coatings having a range of glass transition temperatures and crosslink densities, acrylic polyols were synthesized using a combination of three monomers to systematically vary the hydroxyl equivalent weight and T_g. The libraries of acrylic polyols were synthesized using a parallel batch solution polymerization system and characterized using Rapid GPC and DSC. Coatings were formulated from the acrylic polyols along with an organofunctional poly (dimethyl siloxane) and an isocyanate crosslinker. The coatings were prepared and deposited in array format on test substrates using automated formulation and deposition systems. Coatings were characterized for their surface energy, pseudobamacle pull-off adhesion, and were subjected to bioassays including marine bacteria, algae, and barnacles.