塔菲尔方程
材料科学
腐蚀
硅烷
接触角
介电谱
润湿
表面改性
纳米复合材料
复合材料
甲基三甲氧基硅烷
聚合物
涂层
化学工程
MXenes公司
电化学
纳米技术
化学
物理化学
工程类
电极
作者
Fengyuan Zhang,Weiqu Liu,Shuo Wang,Chunhua Liu,Hongyi Shi,Liyan Liang,Kewu Pi
标识
DOI:10.1016/j.compositesb.2021.108900
摘要
MXenes (Ti3C2Tx), a novel two-dimensional (2D) material, exhibits higher application potential in many fields due to the layered-structure and other unique characteristics. Here, the few-layer Ti3C2Tx is successfully fabricated via etching and ultrasonic. The [3-(2-Aminoethyl) aminopropyl] trimethoxy silane (silane coupling agent, AEAPTES) is used to modify the as-prepared Ti3C2Tx for adjusting wettability. Then, the functional Ti3C2Tx (Ti3C2@Si) with different amount is introduced into waterborne polyurethane (WPU) for enhancing corrosion resistance performance. The corrosion resistance performance is evaluated by Tafel curve and electrochemical impedance spectroscopy. The results of wettability reveal that the hydrophobicity of Ti3C2@Si is significantly improved with the water contact up to 136–142°. The results of anti-corrosion measurement demonstrate that the WPU endowed with Ti3C2@Si presents the excellent corrosion resistance performance. The 0.1%Ti3C2@Si/WPU exhibits the lowest corrosion current density (2.67 × 10−9 A/cm2) and the largest corrosion resistance (3.05 × 106 Ω). Moreover, after 42 days’ immersion, the lowest frequency impedance of 0.1%Ti3C2@Si/WPU composite coating was 3.68 × 106 Ω cm2. This work is of great importance for potential applications of Ti3C2Tx in the anti-corrosion field.
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