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通过高压釜、电化学和XPS(X射线光电子能谱)、SEM(扫描电镜)表面分析试验,研究了咪唑啉类缓蚀剂BW的高温成膜条件和成膜机理.研究结果表明,BW是一种混合型缓蚀剂,通过N原子2p轨道上的孤对电子和Fe的3d空轨道之间形成配位键在金属表面成膜;在试验浓度和温度范围内,BW的浓度越高、控制的高压釜温度越高,成膜效果越好;当BW在高压釜中的浓度达到40 mg/L、pH为9.5～10.0、恒温温度为280℃～320℃、成膜时间为2 h时,BW在金属表面的成膜效果良好.
The conditions of high-temperature film formation and the film formation mechanism of imidazoline type inhibitor BW were studied by autoclave, electrochemical and XPS (X-ray photoelectron spectroscopy) and SEM (scanning electron microscope) surface analysis.The results show that BW A mixed corrosion inhibitor forms a film on the metal surface through the formation of coordination bonds between the lone pair electrons on the 2p orbital of N atom and the 3d empty orbit of Fe. The higher the concentration of BW in the experimental concentration and temperature range, When the concentration of BW in the autoclave reached 40 mg / L, the pH was 9.5-10.0, the temperature was 280-320 ℃ and the time of film formation was 2 h, the higher the autoclave temperature was, , BW in the metal surface filming effect is good.