高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (1): 77.doi: 10.7503/cjcu20160512

• 物理化学 • 上一篇    下一篇

硅烷改性纳米ZrO2对镁锂合金表面环氧树脂涂层耐蚀性能的影响

宋大雷, 刘思奇, 李丰, 王艳力(), 张涛, 颜永得, 张萌, 王君   

  1. 超轻材料与表面技术教育部重点实验室,哈尔滨工程大学材料科学与化学工程学院, 哈尔滨 150001
  • 收稿日期:2016-07-18 出版日期:2017-01-10 发布日期:2016-12-15
  • 作者简介:联系人简介: 王艳力, 女, 博士, 副教授, 主要从事金属材料表面改性和涂层及多相催化材料的合成与催化性能研究. E-mail: yanliwang@hrbeu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 51301050, 51104050)资助.

Effects of Silane-modified Nano ZrO2 on the Corrosion Resistance of Epoxy Coating on the Surface of Mg-Li Alloy

SONG Dalei, LIU Siqi, LI Feng, WANG Yanli*(), ZHANG Tao, YAN Yongde, ZHANG Meng, WANG Jun   

  1. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
  • Received:2016-07-18 Online:2017-01-10 Published:2016-12-15
  • Contact: WANG Yanli E-mail:yanliwang@hrbeu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.51301050, 51104050).

摘要:

采用涂覆法在镁锂合金表面制备了含双-[3-(三乙氧基硅)丙基]四硫化物(KH-69硅烷)改性纳米ZrO2的环氧树脂涂层. 通过傅里叶变换红外光谱(FTIR)、 扫描电子显微镜(SEM)和电化学阻抗谱(EIS)等手段表征了该涂层. 考察了KH-69硅烷改性纳米ZrO2浓度对环氧树脂涂层耐蚀性能的影响. 结果表明, KH-69硅烷改性纳米ZrO2能显著提高镁锂合金表面环氧树脂涂层的耐腐蚀性能, 其中1.0%(质量分数) KH-69硅烷改性纳米ZrO2环氧树脂涂层具有较好的耐蚀性能. 在NaCl溶液中浸渍528 h后的低频阻抗值为1.6×109 Ω·cm2, 相比在NaCl溶液中浸渍240 h的纯环氧树脂涂层提高约5个数量级.

关键词: 镁锂合金, 氧化锆, 硅烷, 环氧树脂, 腐蚀

Abstract:

The epoxy coatings containing ZrO2 nanoparticles modified with bis-[3-(triethoxysilyl)propyl]tetrasulfide(KH-69 silane) were prepared by coating method on the surface of Mg-Li alloy. The effect of concentration of KH-69 silane-modified ZrO2 nanoparticles on the corrosion resistance of epoxy coatings was evaluated. The addition of KH-69 silane-modified ZrO2 nanoparticles can considerably improve the corrosion resistance of the epoxy coating on the surface of Mg-Li alloys. Among them, the epoxy coating containing 1.0% KH-69 silane-modified ZrO2 nanoparticles exhibits the highest corrosion resistance. After 528 h of immersion in 3.5% NaCl solution, its low frequency impendence valve is about 1.6×109 Ω·cm2, which exhibits an increase of about five order of magnitude as compared with the blank epoxy coating.

Key words: Mg-Li alloy, ZrO2, Silane, Epoxy, Corrosion

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