有机硅自润滑组分对自抛光涂层防污、减阻性能的影响  

Effect of Self-lubricating Organic Silicone Component on Antifouling and Drag Reduction Properties of Self-polishing Coatings

作　　者：张建斌 张朝阳 孙立 于波[1] 杨武芳[1,4] 裴小维 蔡美荣[1] 周峰[1] ZHANG Jian-bin;ZHANG Chao-yang;SUN Li;YU Bo;YANG Wu-fang;PEI Xiao-wei;ZHOU Feng(Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China;Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering,Shandong Yantai 265503,China)

机构地区：[1]中国科学院兰州化学物理研究所固体润滑国家重点实验室,兰州730000 [2]中国科学院大学,北京100049 [3]兰州理工大学有色金属先进加工与回收国家重点试验室,兰州730050 [4]烟台中科先进材料与绿色化工产业技术研究院,山东烟台265503

出　　处：《表面技术》2022年第5期274-282,共9页Surface Technology

基　　金：中国科学院B类先导科技专项培育项目(XDPB24);国家自然科学基金(51905519);中国科学院西部青年学者B类项目。

摘　　要：目的制备一种兼具海洋防污和流体减阻功能的绿色海洋装备防护涂层。方法将长链线型有机硅自润滑组分化学键合到自抛光黏结树脂中,与一定的无机填料复配,通过喷涂的方法制备了具有自润滑特性的自抛光防污减阻涂层。通过铅笔硬度测试、抗冲击测试、划格法附着力测试、涂层柔韧性测试、三维轮廓测试、表面接触角表征和固–液摩擦测试,分别评价了涂层的硬度、抗冲击性、附着力、黏弹性、表面粗糙度、表面润湿性能和自润滑特性,并通过抗蛋白和海藻黏附、海洋挂片试验和旋转流变仪分别表征了涂层的防污、流体减阻性能。结果随着涂层黏结树脂中有机硅自润滑组分含量增多,涂层的硬度由2H变为4B,结合力由0级变为2级,涂层的抗冲击性能略有下降,接触角由65°上升至92°,涂层的表面粗糙度均小于500 nm,但涂层的自润滑性质、防污性能和减阻性能却不断增强,摩擦因数(干磨)由0.119下降为0.075。当有机硅质量分数超过20%时,涂层的防海藻黏附效率达到97%,减阻率达到10%以上。海洋挂片进一步证明涂层具有优异的综合防护性能。结论长链线型有机硅虽然一定程度上降低了涂层的硬度和附着力,但由于其特殊的性质,可在满足实际工况需求的前提下,赋予涂层良好的自润滑、防污和减阻性能。To prepare an environment-friendly protective coating with marine antifouling and drag reduction functions,a novel long-chain linear silicone molecules were intelligently integrated in polymer resin,and the self-lubricating coating was prepared compounded with certain inorganic pigment.Foundational properties of coating,including hardness,impact resistance,adhesion,viscoelasticity,surface roughness,surface wettability and self-lubricating properties,were evaluated respectively.Moreover,the antifouling performance of the coating was characterized in terms of different fouling scales,from protein,algae to marine organism,and the drag reduction property of the coating was also measured by a rheometer.The results indicated that the coating hardness descended from 2H to 4B,the adhesion grade changed from 0 grade to 2 grade and the impact resistance decreased slightly with the increase of self-lubricating organic silicone component in the coating,while the contact angle increased from 65°to 92°.Importantly,the self-lubricating properties,antifouling and drag reduction performance of the coating were significantly enhanced with the increase of organic silicon monomer,which were attributed to the minimal surface roughness(less than 500 nm).The friction coefficient under the dry grinding condition was also expected to decreased from 0.119 to 0.075.Besides,when the mass content of organic silicon component was more than 20%,the 97%antifouling ratio of marine algae and 10%drag reduction efficiency were achieved.Finally,the marine field test further proved the excellent antifouling and comprehensive performance of the coating.This research provided a method of preparing silicon coating with both antifouling and drag reduction functions through chemically integrating linear long-chain silicone component in the coating binding resin.Giving their environmental-friendly character,stable performances and facile preparation method,the as-prepared coating had a bright application prospect in the field of marine equipment protecti

关 键 词：有机硅涂层 环境友好 海洋防污 污损释放 自润滑 流体阻力 

分 类 号：TG147[一般工业技术—材料科学与工程]