表面技术2017，Vol.46Issue(10)：35-41,7.DOI:10.16490/j.cnki.issn.1001-3660.2017.10.006
超高分子量聚乙烯/石墨烯复合涂层制备及其在海洋装备防护中的应用
Flame Sprayed UHMWPE/Graphene Nanosheet Composite Coatings for Marine Applications
摘要
Abstract
Marine corrosion, washout and biofouling are key problems to be resolved for marine infrastructures during their service process. Thermal spraying technology has been developed as one of surface protection methods. Thermal sprayed coat-ing can protect metal substrates against corrosion and washout effectively, and inhibit heavy damage from biofouling to marine materials based upon material selection and structural design. UHMWPE-graphene composite powder was prepared in the me-thod of high energy ball milling. UHMWPE and UHMWPE-graphene composite coatings were prepared on E235B carbon steel substrate by adopting flame spraying technology. Microstructure of original powder and as-deposited coatings was characterized by using scanning electron microscope (SEM) and transmission electron microscopy (TEM). Seawater washout resistance, cor- rosion resistance and biofouling resistance of the coatings was evaluated by performing friction and wear experiment, electro-chemical test and biofouling test, respectively. Compared with carbon steel and UHMWPE coating, corrosion potential of UHMWPE-graphene composite coatings increased while corrosion current decreased, indicating that corrosion resistance cha-racteristic of the sample was enhanced. Since UHMWPE-graphene composite coatings exhibited hydrophobicity and lower sur-face energy, it has excellent resistance to seaweed adhesion. Friction coefficient and wear rate of grapheme-doped composite coatings were lower than that of pure UHMWPE coating. For the coating containing 0.5wt.% grapheme, friction coefficient de-creased from 0.236 to 0.195, and wear rate decreased by nearly 26%. Compact UHMWPE coating, UHMWPE-0.2% graphene and UHMWPE-0.5% grapheme composite coatings are successfully prepared on carbon steel by adopting flame spraying tech-nology. Addition of grapheme can effectively improve corrosion resistance, boifouling resistance and wear resistance of the coatings in simulated marine environment.关键词
超高分子量聚乙烯/石墨烯/耐腐蚀/耐磨性/海洋污损/涂层/火焰喷涂Key words
ultra-high molecular weight polyethylene (UHMWPE)/graphene/corrosion resistance/wear resistance/marine biofouling/coating/flame spraying分类
矿业与冶金引用本文复制引用
孟培媛,孙琳琳..超高分子量聚乙烯/石墨烯复合涂层制备及其在海洋装备防护中的应用[J].表面技术,2017,46(10):35-41,7.基金项目
西京学院科研基金项目(XJ160121) Supported by the Research foundation of Xijing University (XJ160121) （XJ160121）
