改性玄武岩/环氧涂层化学键合界面对涂层防腐性能的影响

doi:10.11902/1005.4537.2021.312

中国腐蚀与防护学报

2022, Vol. 42

Issue (6): 1009-1015 DOI: 10.11902/1005.4537.2021.312

研究报告

本期目录 | 过刊浏览

改性玄武岩/环氧涂层化学键合界面对涂层防腐性能的影响

曹京宜¹, 臧勃林¹, 曹宝学¹, 李亮¹, 方志刚¹, 郑宏鹏², 刘莉²(

), 王福会²

1.中国人民解放军92228部队北京 100072
2.沈阳材料科学国家研究中心东北大学联合研究分部沈阳 110819

Influence of Chemical Bonding Interface of Modified Basalt/epoxy Coating on Its Corrosion Resistance

CAO Jingyi¹, ZANG Bolin¹, CAO Baoxue¹, LI Liang¹, FANG Zhigang¹, ZHENG Hongpeng², LIU Li²(

), WANG Fuhui²

1. Unit 92228, People's Liberation Army, Beijing 100072, China
2. Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China

引用本文:

曹京宜, 臧勃林, 曹宝学, 李亮, 方志刚, 郑宏鹏, 刘莉, 王福会. 改性玄武岩/环氧涂层化学键合界面对涂层防腐性能的影响[J]. 中国腐蚀与防护学报, 2022, 42(6): 1009-1015.
Jingyi CAO, Bolin ZANG, Baoxue CAO, Liang LI, Zhigang FANG, Hongpeng ZHENG, Li LIU, Fuhui WANG. Influence of Chemical Bonding Interface of Modified Basalt/epoxy Coating on Its Corrosion Resistance[J]. Journal of Chinese Society for Corrosion and protection, 2022, 42(6): 1009-1015.

全文: PDF(7613 KB) HTML

摘要:

利用硅烷偶联剂KH550对玄武岩鳞片表面进行化学改性,制备了改性玄武岩。通过红外光谱、扫描电子显微镜等技术对改性玄武岩鳞片进行表征；采用沉降实验、涂层横截面微观形貌观察分析了改性玄武岩鳞片在环氧树脂中的分散性和相容性；利用附着力测试和电化学阻抗谱技术,研究了改性玄武岩鳞片/环氧树脂复合涂层的附着性能和防腐性能。结果表明：KH550通过化学键合附着在玄武岩鳞片表面上,使玄武岩鳞片与环氧涂层形成化学键合界面,从而提高了玄武岩鳞片与环氧树脂的相容性,增强了涂层的屏蔽性能和附着力,进而提升了涂层的防腐性能。

关键词 ：硅烷偶联剂, 改性玄武岩, 环氧树脂, 化学键合

Abstract：

Due to the surface smoothness and chemical inertia of basalt flakes, the interfacial bond strength of basalt flake/epoxy resin is poor. In this paper, the basalt flakes were chemically modified by silane coupling agent (KH550) to prepare the modified basalt (MB) flakes. The bare and modified basalt flakes were characterized by FT-IR and SEM/EDS. The dispersibility and compatibility of MB flakes in epoxy resin were examined by sedimentation test and cross-sectional microstructure observation of the prepared flakes/epoxy coating. The adhesion and anti-corrosion properties of MB flakes/epoxy coating were investigated using adhesion test and EIS technology, respectively. The results show that the chemical modification makes the surface of basalt flakes being chemically bonded with KH550, and which is beneficial to the formation the chemical bond interface of MB flakes/epoxy coating, leading to improve the compatibility of MB flakes with epoxy resin, therewith increase the barrier performance and adhesion of the coating, as a result, enhance the anti-corrosion performance of the modified epoxy coating.

Key words： silane coupling agent modified basalt epoxy resin chemical bonded

收稿日期: 2021-11-03

ZTFLH:

TG174.46

基金资助:国家重点研发计划(2019YFC0312100)

作者简介: 曹京宜,女,1972年生,研究员

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	曹京宜
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链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2021.312 或 https://www.jcscp.org/CN/Y2022/V42/I6/1009

图1 KH550,Basalt和MB的FT-IR图谱

图2 改性玄武岩鳞片的SEM图像和EDS图像

图3 B/EP和MB/EP复合涂层不同浸泡时间后的附着力

图4 不同浸泡时间下涂层/金属体系的等效电路图

图5 两种涂层不同浸泡时间后的EIS测试结果

图6 B/EP和MB/EP两种涂层的Cc,Rc和Rt随浸泡时间的变化曲线

图7 Basalt和MB鳞片在环氧树脂中静置的宏观照片

图8 两种涂层浸泡1000 h后的微观形貌

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