Corrosion inhibitor for inhibiting metal corrosion and preparation method and application thereof

The invention provides a corrosion inhibitor for inhibiting metal corrosion and a preparation method and application thereof. The preparation method of the corrosion inhibitor comprises the following step: sequentially reacting acetone, 4-(dimethylamino) benzaldehyde and thiosemicarbazide hydrochloride to obtain the corrosion inhibitor. The corrosion inhibitor for inhibiting metal corrosion provided by the invention can effectively perform corrosion protection on steel sheets under the conditions of low concentration and high temperature of more than 80 DEG C, and has good corrosion inhibition performance; the preparation method has mild conditions and simple and cheap raw materials. 本发明提供了一种抑制金属腐蚀的缓蚀剂及其制备方法与应用。该缓蚀剂的制备方法包括如下步骤：将丙酮、4-(二甲基氨基)苯甲醛以及硫代氨基脲盐酸盐依次进行反应得到所述缓蚀剂。本发明提供的抑制金属腐蚀的缓蚀剂在低浓度、大于80℃的高温的条件下能够有效对钢片进行防腐保护，具有良好的缓蚀性能；其制备方法条件温和，原料简单廉价。