SYNTHESIS OF THREE NEW INHIBITORS AND THEIR INHIBITION PERFORMANCE IN ALKALINE SOLUTION AT HIGH TEMPERATURES
新型缓蚀剂的合成及其在高温碱性条件下缓蚀性能的研究

A new amide corrosion inhibitor OMA and two quaternary ammonium imidazoline inhibitors OMS and OMC are synthesized and their structure is characterized by IR spectra.The maximum test temperature for the high temperature and high pressure experiments was determined by means of DTA test.The inhibition performance for carbon steel of the inhibitors under high temperature-high pressure in alkaline solution is evaluated by autoclave experiments.The results indicate the optimal processing conditions for operations with vapor-phase or liquid-phase,and also with both of vapor and liquid phase respectively.With scanning electron microscopy (SEM) testing,the surface analysis of the film formed on the carbon steel surface in the presence of inhibitors is carried out and a compact protection film formed by OMA on the surface can be observed.