PASP/SG/BTA复合缓蚀剂对碳钢的腐蚀抑制性能提升研究

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中图分类号：TQ317 文献标志码：A 文章编号：1001-5922（2025）10-0027-04

Research on the improvement corrosion inhibition performance PASP/SG/BTA composite corrosion inhibitor on carbon steel

CHEN Zhenzhen，QI Beibei， CHEN Yanmin， ZHANG Hui，HAN Yifan，LI Jiameng （College ， ， ，）

Abstract：Carbon steel priles willdeposit onthe metal surfaceduring long-termuse，andtheyneed tobecleaned regularlywith pickling solution.Corrosion inhibitors areusuallyadded to inhibit thecorrosion the pickling solutionto the pipeline.In this paper，the effcts polyasparticacid（PASP），sodium gluconate（SG），benzotriazole （BTA）and their ternary compound systems on thecorrosion carbon steel in hydrochloric acid medium were tested by static weightloss method，and theefects massconcentration，temperatureand timeonthe performance composite corosion inhibitors were further explored.The results show thatthecorrosion inhibition efect PASP， SG andBTA alone is not ideal，and the performance is improved after compounding in a certain proportion. The best formula is cPASP：cSG：cBTA=12.5：5：1 The corrosion inhibition rate is the highest at c complex=300 mg/L， T= （204号 ， t=12h ，reaching 95.12% ，which is higher than that single component 61.8% （PASP），30.24 % （SG） and 51.24% （BTA）.The analysis corrosion inhibition mechanism shows that the three single components are combined with the metal surface byphysical adsorption，while thecompositecorosion inhibitoris acombination chemical adsorption and physical adsorption.

Key words ： carbon steel;composite corrosion inhibitor;polyaspartic acid;sodium gluconate;benzotriazole

金属尤其碳钢是贯穿人类文明发展的重要物质，其碳含量 （2.5%） 高于其他钢型，极大地提高了金属强度，成为众多领域如建筑、航空、电力、海洋的理想选择。（剩余6490字）