采用自组装技术,在铜合金表面制备了单一6-N,N-二丁基胺-1,3,5-三嗪-2,4-硫醇（DB）和3-巯基丙基三甲氧基硅烷（MPTES）自组装薄膜及二者的复合自组装薄膜。通过傅里叶变换红外光谱（FT-IR）、接触角测量、极化曲线和盐水浸泡实验（0.5M NaCl）对铜合金表面的自组装薄膜的特性进行了表征。结果表明：与未处理的铜合金相比,经复合自组装薄膜修饰的铜合金表面接触角由85.8°上升到107.3°,提高了铜合金表面的疏水性;红外光谱结果也表明复合自组装薄膜在铜合金表面的形成;极化曲线测试和盐水试验均表明了该复合自组装薄膜有效地提高了铜合金的耐腐蚀能力。
6-N,N-dibutyl amine 1,3,5-triazine-2,4-dithiol（DB） and 3-mercaptopropyl trimethoxysilane（MPTES） were used to prepare the single and composite self-assembled films on copper alloy surface.The films were characterized by means of Fourier transform infrared（FT-IR） spectroscopy,contact angle and polarization measurements,and immersion test in salty water.The results show that the contact angle of copper alloy surface covered by composite self-assembled film is up to 107.3° compared with 85.8° of bare copper.From FT-IR spectra of the films formed on copper surface,the C=N-stretching vibration peaks of triazine ring at 1 567cm-1,1 538cm-1 and 1 467cm-1 and the peaks of Si-O-Si at 1 106cm-1 and 1 021cm-1 are observed,indicating the formation of the self-assembled composite film on copper surface.The immersion experiment in salty water and polarization curves indicate that the anti-corrosion performance of self-assembled composite film is better than that of single self-assembled film.
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