Abstract: Tall oil-based hydroxyethyl imidazoline is synthesized by orthogonal experiment from hydroxyethyl ethylenediamine and tall oil fatty acid that is a higher carbon complex fatty acid.The structure of the sample is characterized by FT-IR.The corrosion inhibition performance of tall oil-based hydroxyethyl imidazoline in hydrochloric acid system are investigated.The optimum synthesis process is obtained as follows:the molar ratio of hydroxyethyl ethylenediamine to tall oil fatty acid is 1.2,the reaction temperature gradient is 130-210℃,and the heating rate is 20℃ per hour.Corrosion inhibition performance test shows that corrosion inhibition efficiency is as high as 94.3% when the mass concentration of tall oil-based hydroxyethyl imidazoline is 300 mg·L-1 in a 4 wt.% hydrochloric acid solution at 90℃.Tall oil-based hydroxyethyl imidazoline has a good inhibition efficiency for A3 mild steel in acid solution.The absorption is found to follow Langmuir adsorption isotherm.
张高飞, 张威, 王丰收. 妥尔油基羟乙基咪唑啉的合成及缓蚀性能研究[J]. 现代化工, 2020, 40(6): 151-154.
ZHANG Gao-fei, ZHANG Wei, WANG Feng-shou. Synthesis of tall oil-based hydroxyethyl imidazoline and study on its corrosion inhibition properties. Modern Chemical Industry, 2020, 40(6): 151-154.
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