高导热物质对水性环氧富锌涂料腐蚀行为的影响
Effects of High Thermal Conductivity Substances on Corrosion Behavior of Waterborne Epoxy Zinc-Rich Coatings
摘 要
通过电化学阻抗谱（EIS）研究了高导热物质对水性环氧富锌涂层防腐蚀性能的影响。采用3D激光显微镜对EIS试验后试样的表面形貌和粗糙度进行了分析，采用盐雾试验进一步分析了含不同量高导热物质涂层的防护性能。结果表明：高导热物质添加量为1%～4%时，涂层孔隙率低，浸泡初期具有优异的抗渗性能；高导热物质添加量为8%的涂层孔隙率较高，阻抗值较低，粗糙度较大，防护性能较差；高导热物质添加量为1%的涂层具有最为优异的防腐蚀性能。
涂层
高导热物质
防腐蚀性能
electrochemical impedance spectroscopy
coating
high thermal conductivity substance
anti-corrosion performance
Abstract
The effects of high thermal conductivity substances on the corrosion resistance of aqueous epoxy zinc-rich coatings were mainly investigated by electrochemical impedance spectroscopy (EIS). The surface morphology and roughness of the samples after EIS test were analyzed by 3D laser microscopy. The protective performance of coatings containing different amounts of high thermal conductivity substances was further analyzed by salt spray test. The results showed that when the addition amount of high thermal conductivity material was 1%-4%, the porosity of the coating was low, and the coating had excellent impermeability at the initial stage of immersion. The coating with 8% high thermal conductivity material had relatively high porosity, low impedance value, high roughness and poor protection performance. The coating with 1% high thermal conductivity material had the most excellent anti-corrosion performance.
中图分类号 TG174 DOI 10.11973/fsyfh-202210009
所属栏目 试验研究
基金项目 基于防腐涂层导热性能提升的变压器温升抑制技术研究（GC83-20-003）
收稿日期 2021/10/15
修改稿日期
网络出版日期
作者单位点击查看
联系人作者易盼(bkyipan@126.com)
引用该论文: YI Pan,XU Jin,MO Juan,FAN Baozhen,LIU Rui,YANG Zhen,FANG Zhenggang. Effects of High Thermal Conductivity Substances on Corrosion Behavior of Waterborne Epoxy Zinc-Rich Coatings[J]. Corrosion & Protection, 2022, 43(10): 57
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【3】李运德, 王炳志, 常道阳.变压器和高压开关设备防腐涂层体系设计[J].涂料技术与文摘, 2014, 35(6):20-23, 33.
【4】俞高波, 戴军, 楼致远.涂装技术在电力变压器涂装体系中的应用[J].现代涂料与涂装, 2018, 21(12):49-52, 61.
【5】李明哲, 黄正宏, 康飞宇.挥发性有机物的控制技术进展[J].化学工业与工程, 2015, 32(3):2-9.
【6】应勇, 刘富家.变压器绕组热点温度在线测量方法的研究[J].东北电力技术, 2002, 23(9):17-19.
【7】丁玉琴, 张乔根, 高萌, 等.油浸式配电变压器分布式热路模型[J].高电压技术, 2019, 45(3):968-974.
【8】陈小燕, 张良均, 陈刚, 等.电气石在钢结构水性重防腐涂料中的应用[J].电镀与涂饰, 2018, 37(18):811-817.
【9】周强, 潘梦雅, 张曦霞, 等.双组分水性环氧防腐蚀涂料的研制及其在钢表面的应用[J].材料保护, 2018, 51(12):77-81.
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【23】王贵容, 郑宏鹏, 蔡华洋, 等.环氧防腐涂料在模拟海水干湿交替条件下的失效过程[J].中国腐蚀与防护学报, 2019, 39(6):571-580.
【24】白思洁.海洋大气环境下两种典型复合涂层体系失效过程中物理化学性质及EIS参数的演变[D].北京:北京化工大学, 2018.
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