Department of Coatings & Polymeric Materials, North Dakota State University, Fargo, North Dakota, USA.
Materials and Corrosion Laboratory, Technical Service Center, Bureau of Reclamation, Denver, Colorado, USA.
Biofouling. 2022 Mar;38(3):260-270. doi: 10.1080/08927014.2022.2056033. Epub 2022 Mar 25.
Siloxane-polyurethane hybrid coatings were assessed for biofouling control caused by freshwater mussels. Invasive species such as zebra () and quagga () mussels have rapidly spread through the waterways in the United States causing major concerns in reservoir infrastructure and freshwater lakes. Current coating solutions such as biocidal anti-fouling coatings are not suitable given the released biocides which may accumulate in reservoirs. Biocide free fouling release coatings based on silicone elastomers do not have adequate mechanical durability. The siloxane-polyurethane (SiPU) coatings were evaluated using model organism laboratory assays and real-life performance was evaluated in the freshwater field environment. Two coating compositions displayed excellent performance in field trials for up to 2+ years. The surface analysis experiments of the coatings indicate that the morphology of the coatings is affected by the formulations' solvent choice. These coatings show great promise in mitigating biofouling predominated by freshwater mussels.
硅氧烷-聚氨酯杂化涂层被评估用于控制淡水贻贝引起的生物污垢。斑马贻贝（ zebra mussel ）和斑马贻贝（ quagga mussel ）等入侵物种已迅速在美国的水道中传播，对水库基础设施和淡水湖泊造成了重大影响。鉴于释放的杀生物剂可能在水库中积累，目前的涂层解决方案，如杀生剂型防污涂层，并不适用。基于硅橡胶弹性体的无杀生物剂防污释放涂层的机械耐久性不足。使用模型生物实验室试验对硅氧烷-聚氨酯（SiPU）涂层进行了评估，并在淡水野外环境中评估了实际性能。两种涂层配方在野外试验中表现出色，长达 2 年以上。涂层的表面分析实验表明，涂层的形态受到配方溶剂选择的影响。这些涂层在减轻以淡水贻贝为主的生物污垢方面显示出巨大的潜力。
