Antifouling coatings are critical in preventing the surface of sea vessels being heavily fouled by bio-organisms. In this work, we attached biocidal moieties (Isobornyl methacrylate, IBOMA) to the side chains of the polyacrylic polymer to form the antifouling polymer (AFP). Then, the hydrophilic polysiloxane (HP) was prepared through the polyaddition of polyethylene glycol (PEG) and alkoxysilane onto the main chain of the hydrogen silicone oil. Finally, the hydrophilic fouling release coatings (FRCs) were formed by the reaction or winding of antifouling polymer and HP polymer with an interpenetrating polymer network (IPN) method (IPN-FRCs). The effects of the content of AFP and HP on the adhesion, surface roughness, and antifouling performance of the applied coatings on substrate are thoroughly studied and revealed in details through different analytic techniques. The IPN-FRCs exhibit high adhesion strength to the substrate, and the surface roughness is greatly reduced when submerged in seawater. Furthermore, the IPN-FRCs have high performance against seawater bio-organisms, such as barnacles, during both in-lab and marine field tests when right polymer ratios were chosen. Thus, the novel FRCs may have great potential to be applied for marine vessels in line with their low-cost in raw materials and high performance of the final products.

Graphic abstract

The silicone-based antifouling polymer coatings show high resistance to the foulants of marine bio-organisms.

中文翻译：

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整合防污和除污部分以优化 PEG-硅胶涂层的性能

防污涂层对于防止海洋船舶表面被生物有机体严重污染至关重要。在这项工作中，我们将杀生物部分（甲基丙烯酸异冰片酯，IBOMA）连接到聚丙烯酸聚合物的侧链上以形成防污聚合物（AFP）。然后，通过聚乙二醇（PEG）和烷氧基硅烷加聚到氢硅油的主链上制备亲水性聚硅氧烷（HP）。最后，通过互穿聚合物网络（IPN）方法（IPN-FRCs）通过防污聚合物和HP聚合物反应或缠绕形成亲水性防污涂层（FRCs）。AFP和HP的含量对附着力、表面粗糙度、通过不同的分析技术，深入研究并详细揭示了基材上涂覆涂层的防污性能。IPN-FRCs对基材具有很高的粘附强度，浸入海水后表面粗糙度大大降低。此外，在选择正确的聚合物比例的实验室和海洋现场测试中，IPN-FRC 对海水生物有机体（如藤壶）具有高性能。因此，新型 FRC 因其原材料成本低和最终产品的高性能而在船舶上具有巨大的应用潜力。IPN-FRCS在施用右聚合物比例的实验室内和海洋田间试验中对海水生物体（如藤壶）的性能高。因此，新型 FRC 因其原材料成本低和最终产品的高性能而在船舶上具有巨大的应用潜力。IPN-FRCS在施用右聚合物比例的实验室内和海洋田间试验中对海水生物体（如藤壶）的性能高。因此，新型 FRC 因其原材料成本低和最终产品的高性能而在船舶上具有巨大的应用潜力。

图形摘要

基于有机硅的防污聚合物涂层对海洋生物有机体的污垢具有很高的抵抗力。