SEBS/sCFO复合涂层的制备及防污性能  

Preparation and Antifouling Properties of SEBS/sCFO Composite

作　　者：胡志威 郭毅[1] 董丽杰[1] HU Zhiwei;GUO Yi;DONG Lijie(School of Material Science&Engineering,Wuhan University of technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《表面技术》2024年第20期223-231,共9页Surface Technology

基　　金：海南省科技计划三亚崖州湾联合项目(2021CXLH0021)。

摘　　要：目的合成可抑制海洋生物吸附的磁性纳米微球,制备具有微纳结构的新型防污复合材料。方法首先采用溶剂热法和一步吸附法制备铁酸钴/苯并三唑(CFO/BTA,sCFO)磁性纳米球,将sCFO与嵌段共聚物聚(苯乙烯-乙烯-丁烯-苯乙烯)(SEBS)复合,通过喷涂法制备SEBS/sCFO复合涂层。使用透射电子显微镜、X射线衍射仪、傅里叶变换红外光谱仪、热重分析仪等分析sCFO的微观形貌、晶体结构和化学组成等,通过扫描电子显微镜、接触角测试、蛋白吸附实验、硅藻吸附实验等分析sCFO添加量对SEBS/sCFO复合涂层的表面形貌和防污性能的影响。结果所制备的sCFO为球形结构,尺寸为60~70 nm,饱和磁化强度为44.7 emu/g,其中苯并三唑含量约为32.3%。SEBS涂层的表面因为相分离而呈现褶皱状形貌,SEBS/sCFO复合涂层的表面形貌也因磁性纳米粒子的诱导作用而发生取向,随着sCFO添加量的增加,SEBS/sCFO复合涂层的相分离结构发生变化,提高了SEBS/sCFO复合涂层的抗蛋白吸附性能和抗硅藻吸附性能。结论sCFO纳米球的添加提高了复合涂层的抗蛋白吸附性能、抗硅藻吸附性能,通过sCFO纳米球对SEBS热塑性弹性体表面结构的诱导作用,为研制具有不同微纳表面的新型防污涂层提供了新方法,在海洋防污领域具有潜在的应用前景。Marine transportation efficiency,fuel consumption,and greenhouse gas emissions were deeply affected by biofouling,which has caused huge economic losses.Diatoms are the main species that form microbial membranes in biofouling,and their adhesion on the hull surface can induce the adhesion of large fouling organisms.Spraying organic composite coating on ship hulls can effectively reduce the attachment of fouling organisms,which is a relatively economical and efficient prevention method.Composite materials,used for hull antifouling,are mainly divided into biocide coating and fouling release coating.The biocide coating relies on biocidal agents in the substrate to prevent fouling organisms from growing on the material surface.The fouling release coating can facilitate the removal of fouling organisms by weakening their adhesion to the material surface.Materials with microstructures on the surface are a kind of fouling release coating,such as lotus leaves,shark skin,which usually have good anti-fouling performance.This material can reduce the adhesion of fouling organisms without adding biocides,which is friendly to the marine environment.However,the preparation process of the microstructure-surface materials is usually difficult,generally including template method,etching method,induction method and so on.It is difficult to have large-scale production.It is of great significance to develop new antifouling coating with the special microstructures on the surface.Block copolymers are composed of two or more kinds of chain segments,and their surfaces are convex and concave at micrometer and nanometer level due to microphase separation.SEBS has stable chemical properties and good aging resistance.The surface morphology of the coating can be secondarily induced by mixing nano-filler in the SEBS block copolymer,which is expected to further improve the antifouling performance of the coating.Cobalt ferrite/benzotriazole nanospheres(sCFO)were synthesized by a solvotherm and one-step adsorption method.Consequently,the sCFO was a

关 键 词：铁酸钴 苯并三唑 聚(苯乙烯-乙烯-丁烯-苯乙烯) 嵌段共聚物 喷涂法 抗生物淤积 

分 类 号：TB34[一般工业技术—材料科学与工程]