合成了一种新型的曼尼希碱季铵盐（BMQA）酸化缓蚀剂，通过静态失重法测试了缓蚀剂在不同浓度盐酸中的缓蚀性能。结果表明，90℃下，缓蚀剂 BMQA 在15％盐酸中加入0．1％，18％盐酸中加入0．2％，28％盐酸中加入0．5％，N80钢的腐蚀速率都能小于4 g·m-2·h-1。极化曲线测试表明该缓蚀剂是抑制阳极为主的混合型缓蚀剂，遵循 Langmuir 吸附等温式，能自发在金属表面进行化学吸附。
A new type of Mannich base quaternary ammonium salt was synthesized as an acidification corrosion inhibitor.The inhibition performance of this corrosion inhibitor was evaluated in hydrochloric acid with different concentrations by static weight loss method.The results showed that with 0.1% inhibitor in 15% hydrochloric acid, 0.2% inhibitor in 18% hydrochloric acid and 0.5% inhibitor in 28% hydrochloric acid,the corrosion rates of steel N80 were all lower than 4 g·m-2 ·h-1 at 90℃.Polarization curves indicate that the corrosion inhibitor is a mixed inhibitor but mainly prohibits the anodic corrosion process,obeys the Langmuir adsorption isothermal equation and can spontaneously absorb on the steel surface by chemisorption.
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