本文作者采用XPS,单丝模型,SEM和测定电阻率等方法研究了玻纤表面以A-151、A-186 KH550偶联剂处理后形成的界面层结构;介质在环氧/玻纤复合材料中的扩散系数;界面的粘结形貌等对复合材料耐蚀性能的影响。实验表明,既能与玻纤表面产生化学反应又能与环氧基体形成化学共价键的界面具有较高的界面粘结能,完善的界面粘结形貌,较低的介质扩散系数和良好的界面耐腐蚀性。
The surface structure of glass fiber treated with different silane coupling such as A151, A186, KH550, and the diffusivity of medium in epoxy/glass composite material as well as the adhesive shape of interface have been studied by means of SEM, Single Filament Test, XPS and Specific resistance. The results show that interface with covalent bond reacted with-SiOH both on the surface of glass and in the epoxy matrix is better than that without covalent bond. This type of covalent bond interface had: a) stronger interface adhesion; b) a good shape of interface adhesion; c) lower diffusivity of medium in composite materials; and d) good corrosion-resistant properties of interface.
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