硅烷偶联剂改性磷酸锌对环氧涂层防腐性能的影响

doi:10.11902/1005.4537.2019.040

中国腐蚀与防护学报

2020, Vol. 40

Issue (1): 38-44 DOI: 10.11902/1005.4537.2019.040

研究报告

本期目录 | 过刊浏览

硅烷偶联剂改性磷酸锌对环氧涂层防腐性能的影响

师超^1,²,邵亚薇²(

),熊义¹,刘光明¹,俞跃龙¹,杨志广¹,许传钦¹

1. 南昌航空大学材料科学与工程学院南昌 330063
2. 哈尔滨工程大学材料科学与化学工程学院哈尔滨 150001

Influence of Silane Coupling Agent Modified Zinc Phosphate on Anticorrosion Property of Epoxy Coating

SHI Chao^1,²,SHAO Yawei²(

),XIONG Yi¹,LIU Guangming¹,YU Yuelong¹,YANG Zhiguang¹,XU Chuanqin¹

1. College of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
2. Materials Science and Chemical Engineering College, Harbin Engineering University, Harbin 150001, China

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摘要:

采用硅烷偶联剂 (KH560) 对微纳米片状磷酸锌 (SZP) 表面进行有机改性制备硅烷偶联剂改性微纳米片状磷酸锌 (KH560-SZP)，并通过红外光谱 (FT-IR)，扫描电子显微镜 (SEM)，电子能谱 (EDS) 等手段对KH560-SZP进行表征；采用电化学阻抗谱 (EIS)、附着力测试、表面形貌观察等方法，研究了KH560-SZP在环氧涂层中分散性状态及KH560-SZP环氧涂层的防腐蚀性能。结果表明：经过改性后的磷酸锌表面覆盖一层固化交联的硅烷交联聚合物，能够在环氧树脂中高效分散，从而提高涂层的屏蔽性能和附着力，进而综合提高涂层防腐蚀性能。

关键词 ：硅烷偶联剂, 改性磷酸锌, 环氧涂层, 防腐性能, 界面状态

Abstract：

The submicron-sheet zinc phosphate (SZP) was modified with silane coupling agent (KH560), and then the modified zinc phosphate (KH560-SZP) was characterized by FT-IR, SEM and EDS. Dispersion statuses of SZP and KH560-SZP, as pigments in epoxy coating were comparatively analyzed by SEM. Then, corrosion resistance of epoxy coatings with SZP and KH560-SZP respectively were assessed via EIS, adhesion test and surface morphology observation. The results showed that KH560-SZP, as a pigment coated with cross-linking silane polymer could be dispersed effectively into the epoxy resins. Thus, the barrier performances and adhesion of the coatings were significantly improved. Consequentially, the anti-corrosion performance of the coating was comprehensively improved because due to the addition of the silane coupling agent modified zinc phosphate.

Key words： silane coupling agent modified zinc phosphate epoxy coating corrosion resistance interfacial state

收稿日期: 2019-03-25

ZTFLH:

TG174.46

基金资助:国家重点研发计划(2016YFB0300604);国家国际科技合作计划项目(2014DFR50560);博士启动基金(EA201901056)

通讯作者: 邵亚薇 E-mail: shaoyawei@hrbeu.edu.cn

Corresponding author: Yawei SHAO E-mail: shaoyawei@hrbeu.edu.cn

作者简介: 师超，男，1989年生，博士，讲师

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引用本文:

师超,邵亚薇,熊义,刘光明,俞跃龙,杨志广,许传钦. 硅烷偶联剂改性磷酸锌对环氧涂层防腐性能的影响[J]. 中国腐蚀与防护学报, 2020, 40(1): 38-44.
Chao SHI, Yawei SHAO, Yi XIONG, Guangming LIU, Yuelong YU, Zhiguang YANG, Chuanqin XU. Influence of Silane Coupling Agent Modified Zinc Phosphate on Anticorrosion Property of Epoxy Coating. Journal of Chinese Society for Corrosion and protection, 2020, 40(1): 38-44.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2019.040 或 https://www.jcscp.org/CN/Y2020/V40/I1/38

图1 SZP颜料和KH560-SZP颜料的FT-IR谱

图2 SZP颜料和KH560-SZP颜料的微观形貌及EDS分析结果

表1 SZP颜料和KH560-SZP颜料中各元素含量 (atomic fraction / %)

图3 SZP和KH560-SZP颜料在涂层中的分散状态

图4 不同浸泡时间下涂层/金属体系的等效电路图

图5 两种涂层浸泡不同时间后的EIS测试结果

图6 SZP和KH560-SZP涂层浸泡不同时间后的涂层电阻

图7 SZP和KH560-SZP涂层的Rt随浸泡时间的变化曲线

图8 SZP和KH560-SZP涂层不同浸泡时间下的附着力

图9 浸泡700 h后涂层的宏观腐蚀形貌和拉拔实验后的表面状态

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