食用香料二糠基二硫醚的缓蚀性能研究  

Study on Corrosion Inhibition of Food Spices Difurfuryl Disulfide

作　　者：高阳 邓亚慧 周书胜 GAO Yang;DENG Ya-hui;ZHOU Shu-sheng(Jingzhou Jiahua Technology Co.,Ltd.,Jingzhou Hubei 434000,China)

机构地区：[1]荆州嘉华科技有限公司,湖北荆州434000

出　　处：《辽宁化工》2023年第12期1727-1730,共4页Liaoning Chemical Industry

基　　金：湖北省重点研发计划项目,抗高温环保型钻井液用聚合物材料研究与应用(项目编号:2020BAB072)。

摘　　要：为了解决海上石油开采过程中出现的金属腐蚀问题以及现场处理剂材料对海洋生态环境的破环,通过静态失重法、电化学法、生物毒性以及生物降解实验评价食用香料二糠基二硫醚的缓蚀性能以及环境友好性。结果表明:二糠基二硫醚缓蚀剂的加入使N80钢在腐蚀介质中的腐蚀速率显著下降,该分子在N80钢表面形成单分子层吸附,显著地提高了N80钢腐蚀反应的活化能,使得金属发生腐蚀反应要克服更高的能量障碍,从而减缓了金属的腐蚀;二糠基二硫醚分子含有多个硫原子以及糠基,以配位键的形式与金属形成稳定的化学吸附,在金属表面形成致密吸附膜,抑制电化学腐蚀的发生,达到保护金属的目的。从生物毒性、生物降解性分析,二糠基二硫醚具有优异的环境相容性。In order to solve the problem of metal corrosion in the process of offshore oil exploitation and the damage to the marine ecological environment caused by on-site treatment agent materials,the corrosion inhibition performance and environmental friendliness of difurfuryl disulfide were evaluated through static weight loss method,electrochemical method,biological toxicity and biodegradation experiments.The experimental results showed that the corrosion rate of N80 steel in the corrosion medium decreased significantly with the addition of difurfuryl disulfide as a kind of corrosion inhibitor,and the molecule formed monolayer adsorption on the surface of N80 steel,which significantly increased the activation energy of the corrosion reaction of N80 steel,and made the corrosion reaction of metal have to overcome higher energy barriers,thus slowing down the corrosion of metal.Difurfuryl disulfide molecules contained multiple sulfur atoms and furyl groups,which formed stable chemical adsorption with the metal in the form of coordination bonds,forming a dense adsorption film on the metal surface,inhibiting the occurrence of electrochemical corrosion,and achieving the purpose of metal protection.In addition,according to the analysis of biotoxicity and biodegradability,difurfuryl disulfide had excellent environmental compatibility.

关 键 词：缓蚀剂 缓蚀机理 单分子吸附 活化能 环境保护 

分 类 号：TG174.4[金属学及工艺—金属表面处理]