新型硅土对电力金具涂层防护作用的影响*

doi:10.11901/1005.3093.2015.287

材料研究学报

2016, Vol. 30

Issue (2): 108-114 DOI: 10.11901/1005.3093.2015.287

本期目录 | 过刊浏览

新型硅土对电力金具涂层防护作用的影响*

赵书彦¹, 陈军君², 刘福春¹(

), 徐松², 柯伟¹, 胡波涛², 揭敢新³

1. 中国科学院核用材料与安全评价重点实验室中国科学院金属研究所沈阳 110016
2. 湖南省电力公司科学研究院长沙 410007
3. 工业产品环境适应性国家重点实验室中国电器科学研究院有限公司广州 510663

Effect of New Kinds of Sillitin on Performance of Polyurethane Coating for Electric Power Fittings

ZHAO Shuyan¹, CHEN Junjun², LIU Fuchun^1,^**(

), XU Song², KE Wei¹, HU Botao², JIE Ganxin³

1. Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
2. Hunan Electric Power Corporation Research Institute, Changsha 410007, China
3. State Key Laboratory of Environmental Adaptability for Industrial Products,China National Electric Apparatus Research Institute Co., Ltd, Guangzhou 510633, China

引用本文:

赵书彦, 陈军君, 刘福春, 徐松, 柯伟, 胡波涛, 揭敢新. 新型硅土对电力金具涂层防护作用的影响*[J]. 材料研究学报, 2016, 30(2): 108-114.
Shuyan ZHAO, Junjun CHEN, Fuchun LIU, Song XU, Wei KE, Botao HU, Ganxin JIE. Effect of New Kinds of Sillitin on Performance of Polyurethane Coating for Electric Power Fittings[J]. Chinese Journal of Materials Research, 2016, 30(2): 108-114.

全文: PDF(4628 KB) HTML

摘要:

分别制备了含有M型和Z型硅土的两种丙烯酸聚氨酯复合涂料.喷涂在热浸镀锌钢板上的涂料形成的涂层, 具有良好的力学性能.添加M型和Z型硅土的涂层, 其耐磨性比空白涂层分别提高了57.1%和85.7%, 硬度提高了14.5%和41.8%.用盐雾试验和电化学阻抗谱考察了两种涂层的耐腐蚀性.结果表明, 添加两种硅土的涂层具有更好的耐腐蚀性.其原因是, 两种硅土具有微米粒状氧化硅与纳米片状高岭土的组合结构, 纳米片状高岭土含量的提高有利于改进抗渗透性和力学性能.

关键词 ：材料失效与保护, 电力金具防护涂层, 电化学阻抗谱, 新型硅土, 耐磨性

Abstract：

Polyurethane coatings with two kinds of sillitin, i.e. M type and Z type sillitin respectively as filler were prepared and sprayed on hot dip galvanized steel sheets. The coatings exhibited better mechanical properties than the simple polyurethane coating, i.e. the wear resistance and the hardness of the polyurethane coating may be enhanced by 57.1% and 14.5%, as well as 85.7% and 41.8% for the addition of M type and Z type sillitin respectively. The coatings with the two types of sillitin exhibited also better corrosion resistance. The reason is that two types of sillitin are of a special structure composed of micro-sized granular silica and nano-flake kaolin clay, and the sillitin possesses high amount of nano-flake, which may be beneficial to the enhancement of the permeation resistance and mechanical properties of the coatings.

Key words： materials failure and protection electrical fittings protective coating electrochemical impedance spectroscopy new sillitin abrasion resistance

收稿日期: 2015-05-15

ZTFLH:

TG174

基金资助:* 国家电网公司总部科技项目KG12K16004和广东省中国电器院风电装备腐蚀控制关键技术院士工作站项目2013B090400023资助

作者简介: 通讯作者：刘福春, 研究员

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https://www.cjmr.org/CN/10.11901/1005.3093.2015.287 或 https://www.cjmr.org/CN/Y2016/V30/I2/108

图1 两种硅土粉体SEM照片和EDS图

图2 两种硅土粉体的XRD分析

表1 两种硅土的XRF测试结果

图3 Z硅土涂层的截面形貌

表2 空白涂层试样和硅土涂层试样涂层的光学和力学性能

表3 空白涂层试样和硅土涂层试样的耐磨性能数据

图4 空白涂层试样和硅土涂层试样耐磨试验后SEM照片

图5 空白涂层试样和硅土涂层试样盐雾试验300 h后的照片

表4 空白涂层试样和硅土涂层试样的锈蚀扩展宽度

图6 空白涂层试样和硅土涂层试样在浸泡时间内的Bode图

图7 涂层浸泡不同时间的等效电路图

图8 空白涂层和硅土涂层电阻随浸泡时间的变化

图9 涂层吸水率随浸泡时间的变化

图10 硅土涂层耐腐蚀机理模型

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