【作者】 高慧；

【导师】 齐育红；

【作者基本信息】 大连海事大学 ， 船舶与海洋结构物设计制造， 2010， 硕士

【摘要】 船舶底部海洋污损生物附着的问题,一直以来困扰着人们,在船舶表面涂装低表面能防污涂料是解决污损问题的一个重要途径。低表面能防污涂料基于涂料表面极低的表面能,海洋生物难以在上面附着,即使附着也不牢固,在水流或其他外力作用下很容易脱落,而且不存在有毒性物质的释放,能起到长期防污的作用。氟碳涂料是低表面能防污涂料的一种,与传统涂料相比较有其优异的特性,如超长耐久性、耐腐蚀、耐化学药品、防污性、阻燃性、适应性、良好的涂层粘结性、附着力强、涂层硬度高、施工性能良好、装饰性及防静电、抗核辐射等。此外,随着纳米技术的引入,使得涂料性能的改善有了更广阔的发展空间。因此进一步优化氟碳低表面能防污涂料的配方,并研究分析纳米粉体对氟碳低表面防污涂料的影响,有助于进一步改善涂料的性能。本文通过对涂层力学性能的测试分析,采用动态海水模拟试验方法对涂层的动态性能进行检测,同时利用电化学阻抗谱方法检测涂层的EIS曲线的变化规律,对原有成熟氟碳低表面能涂料配方进行再优化,研究各添加剂对涂料性能的影响。另外,利用不同含量的纳米氧化锌来替代涂料配方中的普通氧化锌制备涂料,通过分析所制备涂层的力学性能、动态性能、电化学阻抗谱(EIS),来进一步研究纳米粉体对涂料性能的影响。研究结果表明：通过对钢板及铝合金底材的涂层性能分析,最终优化出了两种氟碳低表面能防污涂料的配比方案。通过优化配比方案与原有成熟方案制备涂层的性能对比可知,钢板涂层的优化配比方案优势体现在磨蚀率与表面粗糙度相对较低；铝板涂层的优化配比方案优势体现在表面接触角略高。随着涂料配方中纳米粉体含量的逐渐增大,涂层的表面形貌产生了明显的凸起褶皱现象。通过动态试验,对不同纳米粉体含量涂层的电化学阻抗谱分析得出：随着涂料中纳米粉体含量的不断提高,涂层的防护性能有所下降；与不含纳米粉体的涂层相比较,阻抗值略高,耐蚀性能有所提高。更多还原

【Abstract】 Biofouling at the bottom of the Vessels has been plagued people for a long time. Painting low surface energy antifouling coatings is an important way to prevent the biofouling. Based on low surface energy it is difficult for marine fouling organisms to attach. Fluorocarbon coating is a kind of low surface energy antifouling paint. Compared with traditional coatings it has excellent properties, such as long durability, corrosion resistance, chemical resistance, hardness, anti-static and anti-nuclear radiation. In addition, with the introduction of nanotechnology, it will help to improve the coating performances with the further optimization of fluorocarbon low surface energy antifouling coating formulation and study on the influence of nano-powders.In this study, with the dynamic simulation of sea water corrosion tester, used to simulate the real service condition in the seawater, and combined testing the mechanical properties of coatings, we studied the coating performance changes over time, analyzed the curve of EIS and researched the influencing factors of antifouling agents Besides, we use different amounts of nano-zinc oxide to replace the paint formulations prepared in the ordinary zinc oxide coating.Through the analysis of various coating performance, wo can further study the properties of nano-powders on the impact of coatings.The research result shows that, through the analysis of coating performance, we get two paint formulations finally. By contrast, the advantage of steel optimization plant is reflected in the relatively low erosion rate and surface roughness; and the aluminum’s is reflected in the surface contact angle slightly. With the nano coating formulations content increased, the sample surface appears a significant uplift phenomenon. Satisfied by the dynamic test, we know that with the improvement of nano content the coating’s protective property decrease, nano-coating has a slightly higher impedance value compared with those without nano-powders, but improves corrosion resistance by analyzing the EIS curve.更多还原