Preparation and Properties of Cavitation Corrosion Resistant Antifouling Coating for Ship Propeller

doi:10.12020/j.issn.0253-4312.2018.11.23

Abstract

Abstract:

The cavitation corrosion and marine fouling on the surface of the ship propeller had been a difficult problem for many years. In this paper, a coating system with good cavitation resistance and antifouling properties for ship propeller was developed, the coating system was composed of high adhesive epoxy primer, elastic epoxy coating, elastic silicone adhesive coating and low surface energy silicone topcoat. Test results showed that the coating system had little gloss loss and the weight loss was less than 5 mg after cavitation corrosion test on painting tool head for 40 h or 100 h. The water test results showed that the coating system had no effect on the hydrodynamic performance of the propeller. The entire coating system was still integrated after thrash test for 300 h. At present, the field result of 11-month actual ship application had been achieved, the overall application of the coating system was good, only a small area of the edge coating was damaged but there was no diffusion phenomenon under the film. Moreover, the fouling organisms attached to the surface could be easily flushed by high-pressure water.

Key words: propeller, anti-cavitation corrosion, elastic, organic silicone polymer, antifouling

摘要：

船舶螺旋桨表面空泡腐蚀问题和海生物污损问题一直是多年来的难题。文中采用高附着力环氧底漆、缓冲弹性环氧漆、弹性有机硅连接漆和耐空蚀有机硅面漆配套,研制出一种适用于船舶螺旋桨表面兼具耐空泡腐蚀功能和防污功能的涂层配套体系。经过40 h的涂装工具头或100 h的对冲耐空蚀性能测试,试验结果表明:配套涂层表面仅有轻微失光现象,失质量小于5 mg。水筒试验结果证实涂覆配套涂层对螺旋桨水动力性能无影响。涂层体系经过300 h划水试验后,所有桨叶涂层整体较为完好。目前最长已取得11个月实船应用结果,配套涂层整体应用效果良好,仅导边涂层有小面积区域破损,但无膜下扩散现象,表面附着的污损海生物可轻易被高压水冲洗掉。

关键词: 螺旋桨, 耐空泡腐蚀, 弹性, 有机硅, 防污

CLC Number:

TQ635.1

Xueyan Yu,Ke Wang,Huaqing Zhang,Zhengtao Chen,Weiwei Cong,Zhao Lv,Taijiang Gui. Preparation and Properties of Cavitation Corrosion Resistant Antifouling Coating for Ship Propeller[J]. Paint & Coatings Industry, 2018, 48(11): 23-28.

于雪艳,王科,张华庆,陈正涛,丛巍巍,吕钊,桂泰江. 船舶螺旋桨耐空泡腐蚀防污涂层研制及性能研究[J]. 涂料工业, 2018, 48(11): 23-28.

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URL: https://www.cn-pci.com/EN/10.12020/j.issn.0253-4312.2018.11.23

https://www.cn-pci.com/EN/Y2018/V48/I11/23

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