發(fā)布時間：2018-11-17 21:11

【摘要】：采用失重法、接觸角測試、原子力顯微鏡和X射線光電子能譜等分析方法研究了實驗室自制月桂酸咪唑啉硫酸酯鹽緩蝕劑(LIMS)在鹽酸溶液中對A3鋼的緩蝕吸附行為,同時探討了LIMS在A3鋼表面的成膜行為和作用機(jī)理。結(jié)果表明,月桂酸咪唑啉硫酸酯鹽緩蝕劑LIMS分子可以明顯抑制A3鋼在鹽酸溶液中的腐蝕,隨著鹽酸溶液中LIMS質(zhì)量濃度的增加,緩蝕率增加。當(dāng)LIMS質(zhì)量濃度為800mg/L時,在298~318K溫度范圍內(nèi)緩蝕效果良好,緩蝕率可達(dá)90%以上。LIMS可在金屬表面形成一層吸附膜,這種吸附膜來源于長鏈烷基在金屬表面形成的疏水薄膜和N、S、O與金屬表面的強(qiáng)烈作用,成膜試片表面的接觸角隨著緩蝕劑質(zhì)量濃度的增加而增大,接觸角可達(dá)103.51°,接觸角增大,吸附膜作用增強(qiáng),致密性越好。
[Abstract]:The inhibition and adsorption behavior of self-made Imidazoline sulfate inhibitor (LIMS) on A3 steel in hydrochloric acid solution was studied by means of weightlessness test, contact angle test, atomic force microscope and X-ray photoelectron spectroscopy. At the same time, the film forming behavior and mechanism of LIMS on the surface of A 3 steel were discussed. The results showed that the corrosion inhibition rate of A3 steel in hydrochloric acid solution increased with the increase of mass concentration of LIMS in hydrochloric acid solution. When the mass concentration of LIMS is 800mg/L, the corrosion inhibition effect is good in the temperature range of 298 ~ 318K, and the corrosion inhibition rate can reach more than 90%. A layer of adsorption film can be formed on the metal surface by LIMS. The adsorption film is derived from the hydrophobic film formed by long chain alkyl on the metal surface and the strong interaction between the film and the metal surface. The contact angle of the film surface increases with the increase of the mass concentration of corrosion inhibitor, and the contact angle can reach 103.51 擄. With the increase of contact angle, the effect of adsorption membrane is enhanced and the compactness is improved.
【作者單位】： 陜西科技大學(xué)教育部輕化工助劑化學(xué)與技術(shù)重點實驗室;
【基金】：陜西省科技統(tǒng)籌創(chuàng)新工程計劃項目(2014KTCL01-11)
【分類號】：TG174.42

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