曼尼希碱与烯酮类化合物及相关助剂的协同作用研究

发布时间：2018-01-05 17:39

本文关键词：曼尼希碱与烯酮类化合物及相关助剂的协同作用研究　出处：《西安石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：高效缓蚀剂大多是一类多组分的混合物,需添加一定的助剂或者与不同类型的缓蚀剂配合使用,其中与丙炔醇复配是提高缓蚀剂缓蚀效果最重要的方法之一,但由于丙炔醇毒性大,且价格昂贵,对环境造成的伤害大,因此,研究低毒或无毒,对环境友好、缓蚀效果优良的丙炔醇替代品非常重要。本文以苯乙酮、环己胺、苯甲醛、多聚甲醛及丙醛为原料,合成了Mannich碱3-环己胺基-1-苯基-1-丙酮(HAPA),烯酮类化合物2-苯甲酰基-3-羟基-1-丙烯(BAA)、2-苯甲酰基-3-羟基-3-苯基-1-丙烯(BAAB)和4-苯甲酰基-5-羟基-3-庚烯(BAC),并利用红外光谱对其官能团结构进行表征。以HAPA作为缓蚀剂主剂,烯酮类化合物及增效剂作为助剂,采用静态失重法分别研究了BAA、BAAB、BAC及增效剂与HAPA的协同缓蚀作用,并通过电化学方法、扫描电镜法和电子能谱法对配制缓蚀剂的作用机理进行了推测。由HAPA配制的缓蚀剂MH-I在加量为1.0%,90℃,20%盐酸中可使N80钢片的腐蚀速率为7.2568g·m-2·h-1。同样实验条件下,由BAA、BAAB和BAC与HAPA复配制备的系列缓蚀剂MHA、MHB和MHC可使N80钢片腐蚀速率降低到3.0g·m-2·h-1以下,表明烯酮类化合物BAA、BAAB、BAC与HAPA碱有良好的缓蚀协同作用。HAPA、烯酮类化合物与增效剂复配得到的MCA,MCB,MCC系列缓蚀剂实验结果表明,增效剂可进一步提升HAPA的缓蚀效果,三者之间表现出良好的协同缓蚀作用。扫描电镜和EDS能谱显示由HAPA、烯酮类化合物及增效剂复配的复合型缓蚀剂MCA-A1,MCB-A1,MCC-A1能够在N80钢片表面吸附形成有效的保护膜,显著降低腐蚀电解池中自由移动电子密度,增大传质电阻,抑制试片的腐蚀,属于抑制阳极为主的混合型缓蚀剂。
[Abstract]:The most efficient corrosion inhibitor is a kind of multi-component mixture, add some additives or with different types of corrosion inhibitor used in conjunction with propargyl alcohol compound is one of the ways to increase the inhibition effect of the most important inhibitor, but because of propargyl alcohol toxicity, and the price is expensive, on the environment the harm, therefore, of low toxicity or no toxicity, environmentally friendly, excellent corrosion inhibition effect of propargyl alcohol substitute is very important. In this paper, acetophenone, cyclohexylamine, benzaldehyde, formaldehyde and propionaldehyde, Mannich base 3- cyclohexyl amino -1- -1- synthesis (phenyl acetone HAPA), ketene compounds 2- benzoyl -3- hydroxy -1- propylene (BAA), 2- benzoyl -3- hydroxy -3- phenyl -1- propylene (BAAB) and 4- benzoyl -5- hydroxy -3- HEPTENE (BAC), and characterized by infrared spectroscopy. The molecule structure with HAPA as the main agent of corrosion inhibitor ketene compounds, and Synergistic agent as additives, were investigated using BAA, BAAB static weight loss method, synergistic inhibition of BAC and synergist and HAPA, and by electrochemical methods, scanning electron microscopy and electron spectroscopy for the preparation of inhibitor mechanism was proposed. By HAPA with inhibitor MH-I in dosage 1%, 90 C, 20% hydrochloric acid in the corrosion rate of N80 steel is 7.2568g - m-2 - h-1. under the same experimental conditions, by BAA, BAAB and BAC and HAPA compound preparation series corrosion inhibitor MHA, MHB and MHC can make the N80 corrosion rate of steel sheet is reduced to 3.0g - m-2 - H-1 that shows that the ketene compounds BAA, BAAB, BAC and HAPA bases have good synergistic inhibition of.HAPA, obtain ketene compounds and synergists of MCA, MCB, MCC inhibitor. The experimental results show that the synergist can further enhance the inhibition effect of HAPA, between the three showed a synergistic inhibition effect good. Scanning electron microscopy and EDS spectroscopy showed by HAPA, compound ketene compounds and synergistic agent corrosion inhibitor MCA-A1, MCB-A1, MCC-A1 can form a protective film on the surface of N80 steel sheet effective adsorption, significantly reduce the free movement of electron density corrosion in electrolytic cells, increase the mass transfer resistance, corrosion inhibition test piece, is mixed inhibit anodic inhibitor.

【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG174.42;TE980

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