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实验室合成了 4种杂环化合物 ,分别命名为 3,5 -二苯亚胺基 - 1,2 ,4 -二噻唑啉(DPID)、 3-苯亚胺基、 5 -氯苯亚胺基 - 1,2 ,4 -二噻唑啉(PCID)、 3-苯亚胺基、 5 -甲苯基- 1,2 ,4 -二噻唑啉 (PTID)和 3-苯亚胺基、甲氧苯亚胺基 - 1,2 ,4 -二噻唑啉 (PAID)。通过失重法和动电位极化法等技术 ,考察了在 1N盐酸 (HCI)中低碳钢在抑制腐蚀方面的影响 ,发现这些化合物的缓蚀率随浓度、温度和浸泡时间发生变化 ,证实这类化合物即使在 2 5ppm这样低的浓度下仍然具有很好的缓蚀率。动电位极化法研究的结果表明DPID、PCID和PTID3种缓蚀剂是阴极型缓蚀剂 ,而PAID是混合型缓蚀剂 ,缓蚀剂在金属表面的吸附符合Temkin吸附等温线
Four kinds of heterocyclic compounds were synthesized in the laboratory and named as 3,5 - diphenylimino - 1,2,4 - dithiazoline (DPID), 3 - phenylimino, 5 - chlorobenzimido - 1,2,4 - dithiazoline (PCID), 3 - phenylimino, 5 - tolyl - 1,2,4 - dithiazoline (PTID) and 3 - phenylimino, Amino-1,2,4-dithiazoline (PAID). The effects of low carbon steel in 1N hydrochloric acid (HCI) on corrosion inhibition were investigated by weight loss method and potentiodynamic polarization method. It was found that the corrosion inhibition rates of these compounds varied with concentration, temperature and immersion time, confirming that The class compound has a good corrosion inhibition even at such a low concentration of 25 ppm. The results of potentiodynamic polarization show that DPID, PCID and PTID three kinds of corrosion inhibitors are cathodic corrosion inhibitors, while PAID is a mixed corrosion inhibitor. The adsorption of corrosion inhibitor on the metal surface accords with the Temkin adsorption isotherm