Amino-functionalized Ti3C2Tx with anti-corrosive/wear function for waterborne epoxy coating
来源期刊:JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第19期
论文作者:Han Yan Meng Cai Wen Li Xiaoqiang Fan Minhao Zhu
文章页码:144 - 159
摘 要:Two-dimensional Ti3C2Tx flakes have great application potential in various areas due to their optical,electronic, electrochemical and mechanical properties, but their anti-corrosion and wear-resistance performance were not well understood. The difficulties in achieving good dispersity and interface interaction of inorganic additives in organic coatings hinder the incorporation of Ti3C2Tx into the epoxy coating. Here,few-layered Ti3C2Tx sheets with amino-functionalization were prepared, and as reinforced-additives were added into the waterborne epoxy coating. Anti-corrosion and tribological properties of as-prepared composite coatings were investigated in detail. The results reveal that the composite coating with 0.5 wt.% amino-functionalized Ti3C2Tx sheets shows excellent corrosion protection(the lowest frequency impedance was 3.12 × 109 cm2) and wear resistance(wear rate was reduced by 72.74%). The greatly improving performance of composite coatings mainly depends on:(a) good dispersity and compatibility of amino-functionalized Ti3C2Tx in organic matrix,(b) high adhesion strength between coating and metal substrate and(c) the intrinsic properties of Ti3C2Tx sheets. The work provides a good path for applications of MXene as multifunctional additives.
Han Yan1,Meng Cai1,Wen Li1,Xiaoqiang Fan1,Minhao Zhu1,2
1. Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University2. Tribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong University
摘 要:Two-dimensional Ti3C2Tx flakes have great application potential in various areas due to their optical,electronic, electrochemical and mechanical properties, but their anti-corrosion and wear-resistance performance were not well understood. The difficulties in achieving good dispersity and interface interaction of inorganic additives in organic coatings hinder the incorporation of Ti3C2Tx into the epoxy coating. Here,few-layered Ti3C2Tx sheets with amino-functionalization were prepared, and as reinforced-additives were added into the waterborne epoxy coating. Anti-corrosion and tribological properties of as-prepared composite coatings were investigated in detail. The results reveal that the composite coating with 0.5 wt.% amino-functionalized Ti3C2Tx sheets shows excellent corrosion protection(the lowest frequency impedance was 3.12 × 109 cm2) and wear resistance(wear rate was reduced by 72.74%). The greatly improving performance of composite coatings mainly depends on:(a) good dispersity and compatibility of amino-functionalized Ti3C2Tx in organic matrix,(b) high adhesion strength between coating and metal substrate and(c) the intrinsic properties of Ti3C2Tx sheets. The work provides a good path for applications of MXene as multifunctional additives.
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