Synthesis and experimental analysis of a new triazine polyether gemini imid-azoline inhibitor
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O647

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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    Abstract:

    In this paper, cyanuric chloride is used as the matrix, and a long polyether chain and two imidazoline oleic acid structures are introduced, which not only ensure good corrosion inhibition performance, but also increase water solubility, then, a new inhibitor, 2, 4-dioleate imidazoline 6-methoxypeg-1,3, 5-triazine (IPT) was designed and synthesized that aggregate multiple effective corrosion inhibiting groups into a single structure. The corrosion inhibition performance of Q235 steel in 1mol/L hydrochloric acid was tested by means of weight loss, electrochemical technology, contact angle and AFM. All the results show that IPT has excellent corrosion inhibition effect on Q235 steel in 1mol/L HCl, and it can maintain a good corro-sion inhibition effect in the range of 30~70 ℃, and it is less affected by temperature, even can still ensure stable adsorption on the surface of Q235 steel at 70 ℃. The adsorption of IPT molecules on the surface of Q235 steel conforms to Langmuir isothermal adsorption. The adsorption process is a self-releasing heat process mainly based on chemical adsorption. The hydrophobic chains of the IPT inhibitor's gemini struc-ture are aligned to form a neat and dense hydrophobic barrier. The hydrophilic end helps increase the wa-ter solubility of IPT, optimizes the solubility of traditional imidazoline corrosion inhibitors, and can block H pairs in acidic solutions corrosion of metal surfaces has good application prospects.

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History
  • Received:August 03,2020
  • Revised:October 14,2020
  • Adopted:October 15,2020
  • Online: January 05,2021
  • Published:
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