两性双子表面活性剂的合成及其耐蚀性  

Synthesis and Corrosion Resistance of Amphoteric Gemini Surfactants

作　　者：陈芬[1] CHEN Fen(Biology Engineering Department,Wuhan Polytechnic,Wuhan 430074,China)

机构地区：[1]武汉职业技术学院生物工程学院,武汉430074

出　　处：《腐蚀与防护》2018年第9期684-688,共5页Corrosion & Protection

基　　金：湖北省高等学校优秀中青年科技创新团队计划项目(T201535)

摘　　要：采用伯胺与二卤代乙醚首先合成中间体N,N′-二烷基-3-氧杂-1,5-戊二胺,而后中间体与氯乙酸反应得到目标产物两性双子表面活性剂N,N′-二烷基-N,N′-二羧酸基-3-氧杂-1,5-戊二胺。对两性双子表面活性剂进行复配,测试其缓蚀性能,并与单独使用两性双子表面活性剂的缓蚀效果相比较。结果表明:双子表面活性剂与N-十二烷基苯并咪唑双子表面活性剂复配后,其缓蚀性能比单独使用两性双子表面活性剂的更好。在1.0mol/L HCl溶液中,两性双子表面活性剂按摩尔比2∶1进行复配时,Q235钢的腐蚀电流密度最小,容抗弧半径最大,缓蚀效果最好。Intermediate N,N′-dialkyl-3-oxa-1,5-pentanediamine was synthesized by the reaction of primary amine with dihaloethyl ether,and then the intermediate was reacted with chloroacetic acid to obtain the target product amphoteric gemini surfactant N,N′-dialkyl-n,N′-dicarboxylic acyl-3-oxa-1,5-pentanediamine.The amphoteric gemini surfactant was compounded to test its corrosion inhibition performance and compared with the corrosion inhibition effect of the amphoteric gemini surfactant alone.The results showed that the corrosion inhibition performance of the gemini surfactant and N-dodecylbenzimidazole gemini surfactant was better than that of the amphoteric gemini surfactant alone.In 1.0 mol/L HCl solution,when the amphiphilic gemini surfactant was compounded by 2∶1,the corrosion current density of Q235 steel was the smallest,the radius of capacitive anti-arc was the largest,and the corrosion inhibition effect was the best.

关 键 词：防腐蚀 双子表面活性剂 电化学技术 Q235钢 

分 类 号：TG174[金属学及工艺—金属表面处理]