通过与 3

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通过与 3

2024-07-11 03:02| 来源: 网络整理| 查看: 265

钢材暴露在恶劣的海洋环境中会导致严重腐蚀,从而显着影响其耐用性。本研究利用3-甲基丙烯酰氧基丙基三甲氧基硅烷(γ-MPS@MXene)对新型二维MXene纳米片进行功能化,然后通过溶液共混的方法将其引入到乙烯基酯树脂(VER)中,以增强其防腐性能。涂料。系统研究了γ-MPS@MXene的掺入对VER纳米复合材料力学性能、热稳定性、动态热机械性能、耐紫外老化性能、防腐性能的影响。当与0.08 wt% γ-MPS@MXene复合时,γ-MPS@MXene VER纳米复合材料可以获得最佳的拉伸强度、弹性模量、硬度、热稳定性和抗紫外线老化性能。电化学阻抗谱(EIS)结果表明,在VER中引入γ-MPS@MXene纳米片显着增强了复合涂层的防腐性能,并揭示了防腐机理。γ-MPS@MXene与VER基体之间通过共价交联产生良好的界面相互作用,减少了复合涂层的界面缺陷,也有利于增强相容性,VER中分散良好的γ-MPS@MXene创造了一个“迷宫”效应”,延长了腐蚀介质向碳钢基体的扩散路径。该研究为制备重防腐纳米复合树脂涂层提供了一种有前途的策略,可以实现金属基材的长期腐蚀防护。

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Achieving superior anti-corrosion properties of vinyl ester resin coatings via compositing with 3-methacryloxy propyl trimethoxysilane functionalized MXene nanosheets

Exposure of steel to harsh marine environment can cause serious corrosion, which significantly affects its durability. In this study, a novel two-dimensional MXene nanosheets were functionalized with 3-methacryloxy propyl trimethoxysilane (γ-MPS@MXene) followed by introducing into the vinyl ester resin (VER) through solution blending method to enhance the anti-corrosion properties of the coatings. The effects of γ-MPS@MXene incorporation on the mechanical properties, thermal stability, dynamic thermo-mechanical properties, UV aging resistance, anti-corrosion properties of the VER nanocomposites were systematically investigated. The optimum tensile strength, elastic modulus, hardness, thermal stability and UV aging resistance of γ-MPS@MXene VER nanocomposites can be achieved when composited with 0.08 wt% γ-MPS@MXene. The electrochemical impedance spectroscopy(EIS) results demonstrate the introduction of γ-MPS@MXene nanosheets into the VER enhanced the anti-corrosion properties of the composites coating remarkablely and the anti-corrosion mechanism was also revealed. The favourable interfacial interaction between γ-MPS@MXene and VER matrix through covalent cross-linking diminished interfacial defects of the composite coating and was also beneficial to enhancement of the compatibility, the well-dispersed γ-MPS@MXene in VER created a “labyrinth effect”, which prolonged the diffusion path of corrosive medium to the carbon steel substrate. This research provides a promising strategy for the fabrication of heavy anti-corrosion nanocomposite resin coatings, which can realize long-term corrosion protection of metal substrates.



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