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以正十二硫醇-十四酸两种混合溶液作为疏水剂,采用直接浸泡法在模拟带锈(混合锈与粉状锈)青铜表面构筑超疏水薄膜,以达到对青铜文物的防腐保护。通过扫描电子显微镜、接触角测量仪对超疏水表面形貌特征及疏水性进行分析,采用傅里叶红外光谱仪对超疏水表面进行成分分析,并采用电化学工作站对其进行耐腐蚀性分析。结果表明,经超疏水处理后,带锈青铜表面形成紧凑的片状结构,其厚度约为0.1μm。接触角分别可达157.32o和151.76o。带混合锈青铜的自腐蚀电流密度由8.5 m A·cm~(-2)降低至0.30 m A·cm~(-2),缓蚀效率达96.54%;带粉状锈青铜的自腐蚀电流密度由5.91 m A·cm~(-2)降低到2.89×10-2m A·cm~(-2),缓蚀效率达99.51%。
Using dodecanethiol - myristic acid as the hydrophobic agent, a direct soaking method was used to build a superhydrophobic film on simulated bronze with rust (mixed rust and powdery rust) to achieve the preservation of bronze cultural relics. The morphology and hydrophobicity of the superhydrophobic surface were analyzed by scanning electron microscopy and contact angle measurement. The composition of the superhydrophobic surface was analyzed by Fourier transform infrared spectroscopy. The corrosion resistance of the superhydrophobic surface was analyzed by electrochemical workstation. The results show that the surface of the rusty bronze formed compact sheet-like structure with the thickness of about 0.1μm after superhydrophobic treatment. Contact angle up to 157.32o and 151.76o. The corrosion current density of bronze with mixed rust decreased from 8.5 m A · cm -2 to 0.30 m A · cm -2, and the corrosion inhibition efficiency reached 96.54%. The self-corrosion current density From 5.91 m A · cm -2 to 2.89 × 10 -2 m A · cm -2, the corrosion inhibition efficiency reached 99.51%.