聚苯胺-氮化硼纳米颗粒复合水性环氧涂层的制备与防腐性能研究

安然, 韩飞, 兰柯, 李柱, 郭小平, 刘栓

doi:10.16577/j.issn.1001-1560.2024.0029

材料保护 >

2024 , Vol. 57 >Issue 2: 18 - 27

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0029

研究篇

聚苯胺-氮化硼纳米颗粒复合水性环氧涂层的制备与防腐性能研究

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¹江西理工大学化学化工学院； ²中国科学院宁波材料技术与工程研究所； ³杭州本创科技有限公司

刘栓(1986-)，博士，高级工程师，研究方向为海洋重防腐涂料， E-mail: liushuan＠nimte.ac.cn

收稿日期: 2023-06-05

修回日期: 2023-08-14

录用日期: 2023-09-10

网络出版日期: 2024-03-08

基金资助

杭州本创科技公司科技项目；国家重点研发计划“深海水下电液作动器(EHA)研制与应用示范”(2023YFC2809901)资助

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Preparation and Anti-Corrosion Properties of Polyaniline-Boron Nitride Nanoparticle Composite Waterborne Epoxy Coating

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(1.School of Chemistry and Chemical Engineering， Jiangxi University of Science and Technology， Ganzhou 341000， China；2.Ningbo Institute of Materials Technologies and Engineering， Chinese Academy of Sciences， Ningbo 315201， China；3.Hangzhou Benchuang Technology Co.， Ltd.， Hangzhou 310030， China)

LIU Shuan (1986-)， Ph.D.， Senior Engineer， Research Focus: Marine Heavy Anticorrosive Coatings， E-mail:liushuan＠nimte.ac.cn

Received date: 2023-06-05

Revised date: 2023-08-14

Accepted date: 2023-09-10

Online published: 2024-03-08

Supported by

Science and Technology Project of Hangzhou Benchuang Technology Co.， Ltd.； National Key R＆D Program “Development and Application Demonstration of Deepsea Underwater Electro-Hydraulic Actuator (EHA)”(Item number:2023YFC2809901)

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摘要

为了提升水性环氧涂层在高盐、高湿海洋环境中的防腐性能和耐久性能，在羟基化的六方氮化硼表面通过原位聚合生长聚苯胺(PANI)得到聚苯胺/氮化硼纳米颗粒(PBN)，将PBN 作为防腐填料来增强水性环氧涂层的防腐性能。通过傅里叶变换红外光谱(FT-IR)和电子扫描电镜(SEM)对纳米颗粒的结构与微观形貌进行表征，采用电化学测试和中性盐雾试验(NSS)探究氮化硼、PANI 改性水性环氧涂层和PBN 添加量对水性环氧涂层的防腐性能的影响。结果表明:PANI 在BN 纳米片表面原位生长形成珊瑚状结构，向水性环氧涂层中添加0.50%(质量分数，下同)PBN 后的粘结强度达到6.05 MPa，在3.5%NaCl 溶液中浸泡120 h 后的腐蚀电流密度(1.99×10-9 A/cm2)比纯环氧涂层(1.01×10-6 A/cm2)降低约3 个数量级。这归因于添加的0.50%PBN 能均匀分散在环氧树脂中，填补涂层的微小空隙并提升对腐蚀介质的阻隔作用，同时PANI 具有缓蚀作用，二者协同提高纯环氧涂层的防腐性能。

关键词： 聚苯胺; 氮化硼; 改性; 水性环氧涂层; 防腐性

本文引用格式

安然, 韩飞, 兰柯, 李柱, 郭小平, 刘栓 . 聚苯胺-氮化硼纳米颗粒复合水性环氧涂层的制备与防腐性能研究[J]. 材料保护, 2024 , 57(2) : 18 -27 . DOI: 10.16577/j.issn.1001-1560.2024.0029

Abstract

For improving the anti-corrosion performance and durability of waterborne epoxy coatings in high-salt， high-humidity marine environments， polyaniline/boron nitride nanoparticles (PBN) were prepared by the in-situ polymerization of polyaniline (PANI) on the surface of hydroxylated hexagonal boron nitride (BN).In addition， PBN were used as anti-corrosion filler to enhance the anti-corrosion performance of waterborne epoxy coatings.The structure and micro-morphology of nano-particles were characterized by Fourier transform infrared spectroscopy(FT-IR) and scanning electron microscopy (SEM).Moreover， electrochemical tests and neutral salt spray tests (NSS) were used to explore the effects of BN， PANI modifications and PBN addition amount on the anti-corrosion performance of waterborne epoxy coatings.Results showed that PANI grew in situ on the surface of BN nanosheets to form a coral-like structure， and the bonding strength of waterborne epoxy coating reached 6.05 MPa after adding 0.50%(mass fraction，the same below) PBN.The corrosion current density (1.99×10-9 A/cm2) of the composite coating immersed in 3.5%NaCl solution after 120 h was reduced by about 3 orders of magnitude compared to that of pure epoxy coating (1.01×10-6 A/cm2).This was attributed to the fact that the addition of 0.50%PBN could evenly disperse in the epoxy resin， fill small gaps in the coating and enhance the barrier effect against corrosive medium.Meanwhile， PANI had a corrosion inhibition effect， which could synergistically improve the anti-corrosion performance of pure epoxy coatings.

Key words： polyaniline; boron nitride; modification; waterborne epoxy coating; anti-corrosion performance

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