【摘要】 以乙二胺和乙酰丙酮为原料,在盐酸催化下合成了新的Schiff碱化合物,其收率为73.2%。采用红外光谱和核磁共振谱对化合物的结构进行了表征。并将其自组装在不锈钢基体表面,利用极化曲线、电化学阻抗谱和自腐蚀电位-时间曲线进行电化学分析。结果表明,在1 mol/L HCl中,不锈钢表面自组装分子膜能快速有效的抑制异相电子的转移,促进不锈钢表面发生钝化,减少了不锈钢基体的腐蚀。总结了Schiff碱自组装分子膜对金属防护的效用和价值。更多还原

【Abstract】 A new Schiff base was synthesized from ethylenediamine and acetylacetone using hydrochloric acid as catalyst.The yield of the target base was about 73.2 %.1H NMR and FT-IR were performed to determine the structure of the final product.Polarization curves,electrochemical impedance and the corrosion potential-time curves of the Schiff base self-assembled membranes on stainless steel(SS/SAMs) were analyzed.The result showed that,in 1.0 mol/L HCl,the SS/SAMs can effectively inhibit the heterogeneous electron transfer,promote the stainless steel surface passivation,and reduce corrosion of the stainless steel substrate.Effectiveness and value of metal protection of Schiff base were summarized.更多还原