Preparation and performance study of hydrophobic fumed silica loaded with BTA/epoxy composite coating

IF 2.3 4区材料科学 Q2 CHEMISTRY, APPLIED Journal of Coatings Technology and Research Pub Date : 2024-03-22 DOI:10.1007/s11998-024-00912-9

Xin Sun, Yan Zhang, Xinyu Wang, Xiaomei Wang, Minsheng Bu, Qiyuan Li, Xiao Wang, Wei Lu, Weili Li, Zheng-Bai Zhao

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Abstract

Multifunctional anti-corrosive coatings are a key focus in the development of modern coatings. In this study, the corrosion inhibitor benzotriazole (BTA) was loaded onto fumed silica (SiP) through physical adsorption, and then the surface of SiP was modified with octadecyl trimethylsilane (OTMS) to create a modified fumed silica supported by BTA (BTA-SiP@OTMS). The resulting sample was blended with epoxy resin to create a composite coating with both anti-corrosive and hydrophobic properties. The OTMS modification effectively covers the surface of the fumed silica, transforming the composite coating from hydrophilic to hydrophobic. This hydrophobicity prevents the penetration of corrosive mediums. The addition of BTA-SiP@OTMS significantly increases the impedance value of the composite coating, indicating improved corrosion resistance. Due to its hydrophobic and anti-corrosion properties, the composite coating shows promising potential in weather-resistant coatings.

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负载 BTA/epoxy 复合涂层的疏水性气相法二氧化硅的制备和性能研究

多功能防腐涂料是现代涂料发展的重点。在本研究中，通过物理吸附将缓蚀剂苯并三唑（BTA）负载到气相二氧化硅（SiP）上，然后用十八烷基三甲基硅烷（OTMS）对 SiP 表面进行改性，形成一种由 BTA 支持的改性气相二氧化硅（BTA-SiP@OTMS）。将得到的样品与环氧树脂混合，可制成具有防腐和疏水特性的复合涂层。OTMS 改性有效地覆盖了气相二氧化硅的表面，使复合涂层从亲水性转变为疏水性。这种疏水性可以防止腐蚀性介质的渗透。添加 BTA-SiP@OTMS 后，复合涂层的阻抗值明显增加，表明耐腐蚀性能得到改善。由于其疏水和防腐蚀特性，该复合涂层在耐候涂层中显示出巨大的潜力。

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来源期刊

Journal of Coatings Technology and Research 工程技术-材料科学：膜

CiteScore

4.30

自引率

8.70%

发文量

130

审稿时长

2.5 months

期刊介绍： Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.