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为了了解3-缩水甘油醚丙基三甲氧基硅烷(γ-GPTMS)溶液中助溶剂对水解的γ-GPTMS在铝合金表面的沉积特性的影响,用X射线光电子衍射(XPS)测定了不同助溶剂含量,不同γ-GPTMS浓度的溶液沉积在铝合金表面的硅含量,同时用反射吸收红外光谱(RAIRS)对铝合金表面膜层进行了表征,结果表明,助溶剂对γ-GPTMS在铝合金表面沉积有显著影晌,γ-GPTMS的纯水溶液在铝合金表面所形成硅烷化膜层的硅元素量最高,沉积量随溶液中γ-GPTMS浓度的增加而增加。另外,膜层与氧化的铝合金表面之间形成铝硅氧烷(Al-O-Si)共价键,而且γ-GPTMS分子中的烷氧乙基分布在膜层的外表面,具有较大的反应活性。
In order to understand the effect of co-solvent on the deposition characteristics of γ-GPTMS hydrolyzed in 3-glycidoxypropyltrimethoxysilane (γ-GPTMS) solution on the surface of aluminum alloy, different kinds of γ-GPTMS were determined by X-ray photoelectron spectroscopy Solvent content and different concentration of γ-GPTMS on the surface of aluminum alloy. The surface film of aluminum alloy was characterized by reflectance absorption infrared spectroscopy (RAIRS). The results show that the solubility of γ-GPTMS in aluminum alloy Surface deposition has a significant impact, the pure solution of γ-GPTMS formed on the surface of the aluminum alloy silylation film silicon content is the highest, the amount of deposited with the solution γ-GPTMS concentration increases. In addition, AlSi (Al-O-Si) covalent bonds are formed between the film and the surface of the oxidized aluminum alloy, and the alkoxyethyl groups in the γ-GPTMS molecules are distributed on the outer surface of the film, Reactivity.