适用于深海压力-流体耦合环境的玄武岩有机防腐涂层的制备及性能研究

doi:10.11902/1005.4537.2023.142

中国腐蚀与防护学报

2023, Vol. 43

Issue (4): 704-712 CSTR: 32134.14.1005.4537.2023.142 DOI: 10.11902/1005.4537.2023.142

中国腐蚀与防护学会杰出青年成就奖论文专栏

本期目录 | 过刊浏览

适用于深海压力-流体耦合环境的玄武岩有机防腐涂层的制备及性能研究

孟凡帝¹(

), 高浩东¹, 刘莉¹, 崔宇², 刘叡¹, 王福会¹

^1.东北大学材料科学与工程学院沈阳 110819
^2.中国科学院金属研究所师昌绪先进材料创新中心沈阳 110016

Preparation and Anticorrosive Performance of a Basalt Organic Coating for Deep Sea Coupled Pressure-fluid Environment

MENG Fandi¹(

), GAO Haodong¹, LIU Li¹, CUI Yu², LIU Rui¹, WANG Fuhui¹

^1.School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
^2.Shi -changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

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摘要:

片状阻挡型无机填料可显著延长腐蚀介质在有机涂层中的扩散路径，被广泛应用于海洋防腐涂层领域。然而，在深海环境压力-流体耦合作用下，涂层中填料/树脂界面薄弱处往往因应力集中而导致涂层开裂。针对该问题，本工作选取玄武岩鳞片作为实验对象，根据其结构特性采用化学刻蚀方法在鳞片表面形成微结构；随后利用硅烷偶联剂改性玄武岩鳞片，降低了填料的表面能。通过以上处理可明显改善填料在有机树脂中的润湿性，增强了填料与树脂的界面结合能力。涂层失效行为结果表明，刻蚀-改性后玄武岩与树脂相容性好，偶联剂分子又参与涂层固化而进一步增加了涂层与填料间的界面结合力。实验进行240 h后，改性玄武岩环氧 (EMB/E) 涂层的阻抗模值 (|Z|_{0.01 Hz}) 比未改性玄武岩 (B/E) 涂层的高一个数量级。玄武岩有机防腐涂层有效降低了压力-流体耦合环境对填料/涂层界面的劣化作用，在深海环境中可表现出更好的防护性能。

关键词 ：玄武岩鳞片, 有机涂层, 深海环境, 防腐性能

Abstract：

Sheet-like blocking inorganic fillers are widely used in the marine anti-corrosion coating field as their high aspect ratios significantly extend the diffusion path of the corrosive medium in organic coatings. However, under the coupling action of pressure-flow of seawater in the deep sea, the weak point at the filler/resin interface in the coating often cracks due to stress concentration. To address this issue, the purpose of this article is to study the feasibility of application of the modified basalt flakes, as a filler material, to enhance the adhesion of the filler/resin interface of organic coatings. Basalt flakes were firstly chemically etched to endow with peculiar surface morphology, which afterwards were modified with a silane coupling agent to reduce their surface energy. As a result, the wettability of the modified basalt flakes to the organic resin and the interfacial bonding between the modified basalt flakes and the resin are all significantly enhanced. The failure behavior of the coating under the coupling action of pressure-flow of seawater in a simulated deep sea condition showed that the etched-modified basalt filler had a good compatibility with the resin, and the surface coupling agent molecules could participate in the curing of the coating and further increase the interfacial bonding between the coating and the filler. After corrosion test in artificial seawater by couplingaction of pressure-flow conditions for 240 h, the impedance modulus (|Z|_{0.01 Hz}) of the etched-modified basalt epoxy (EMB/E) coating was one order of magnitude higher than that of the unmodified basalt (B/E) coating. Therefore, the basalt organic coating effectively reduces the deterioration of the filler/coating interface under the coupling action of pressure-flow of seawater in simulated deep sea conditions. It can be expected to select the epoxy coating with modified basalt flakes as a candidate coating of better protective performance for engineering application in deep-sea environments.

Key words： basalt flake organic coating deep sea environment anti-corrosion performance

收稿日期: 2023-05-07 32134.14.1005.4537.2023.142

ZTFLH:

TG174

基金资助:国家自然科学基金(52271052);国家自然科学基金(U20A20233);中央高校基本科研业务费(N2102014)

通讯作者: 孟凡帝，E-mail: fandimeng@mail.neu.edu.cn，研究方向为海洋环境材料的腐蚀与防护

Corresponding author: MENG Fandi, E-mail: fandimeng@mail.neu.edu.cn

作者简介: 孟凡帝，男，1988年生，博士，副教授，2017 年毕业于中国科学院金属研究所，获博士学位。现就职于东北大学，副教授。孟凡帝博士主要研究方向为海洋腐蚀与防护、有机功能防腐涂层、基于视觉分析的监检测技术等。详细阐明了海洋极端环境下有机涂层的失效行为，基于涂层界面破坏机制建立了海洋防腐涂层设计准则；基于“界面化学键合”概念从热力学、动力学角度揭示化学键合界面控制原理，通过控制制备工艺、化学键合几率等全面建立了涂料界面调控制备技术，并成功应用于有机涂层的研发。从理论研究到技术应用开展了新型高性能防腐-功能涂层的研制工作，综合提升了涂层各项主体性能指标。代表性成果包括深海环境下材料失效机制、涂料化学键合界面调控技术、涂层的理论寿命预测等。相关涂料产品及技术成果已通过涂料企业批量生产并在有关国防工程装备涂装应用。作为负责人主持国家自然科学基金面上、青年、航空科学基金、国防等项目10 余项，以项目骨干身份参与国家重点研发计划等项目。在Corrosion Science、Progress in Organic Coatings 等领域内主流期刊发表学术论文20 余篇，授权国家发明专利6 项。担任《中国腐蚀与防护学报》青年编委。2023 年获得中国腐蚀与防护学会杰出青年成就奖。

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引用本文:

孟凡帝, 高浩东, 刘莉, 崔宇, 刘叡, 王福会. 适用于深海压力-流体耦合环境的玄武岩有机防腐涂层的制备及性能研究[J]. 中国腐蚀与防护学报, 2023, 43(4): 704-712.
MENG Fandi, GAO Haodong, LIU Li, CUI Yu, LIU Rui, WANG Fuhui. Preparation and Anticorrosive Performance of a Basalt Organic Coating for Deep Sea Coupled Pressure-fluid Environment. Journal of Chinese Society for Corrosion and protection, 2023, 43(4): 704-712.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2023.142 或 https://www.jcscp.org/CN/Y2023/V43/I4/704

图1 玄武岩鳞片的刻蚀-改性实验原理图

图2 不同处理状态下玄武岩鳞片的红外光谱图

图3 不同处理状态下玄武岩鳞片的热重曲线图

图4 4种玄武岩鳞片的微观形貌

图5 4种玄武岩鳞片样品的水接触角和油接触角

图6 压力-流体耦合环境下B/E涂层及EMB/E涂层吸水率随时间变化曲线

图7 深海模拟耦合环境下B/E涂层/金属样品的电化学阻抗图及等效电路

图8 深海模拟耦合环境下EMB/E涂层/金属样品的电化学阻抗图

图9 压力-流体耦合环境浸泡120 h后B/E及EMB/E涂层的表面微观形貌

图10 深海压力-流体耦合环境下EMB/E涂层的防护机理示意图

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