双十二烷基长链季铵盐吸附及渗透性能的研究

双季铵盐化合物是一种具有广阔应用前景的表面活性剂。以二氯乙醚为联接剂,利用脂肪叔胺合成了一种长链的双季铵盐类化合物(简称BQA),用交流阻抗、电子扫描显微镜等方法研究了BQA在Q235钢表面的吸附、缓蚀及对生物膜下硫酸盐还原菌(SRB)的杀灭机理。研究结果表明:在模拟油田水介质中BQA对碳钢具有较为显著的缓蚀作用,与传统杀菌剂相比具有更好的渗透杀菌性能。

Adsorption and Penetration Performance of Twelve Alkyl Bisquats

Bisquats is a surface-active agent which has wide application potential. In this paper, a bisquat compound was successfully synthesized using straight chain amine as matrix and dichloroethyl e-ther as linking agent. Electrochemical impedance spectroscopy and electronical scanning microscopy were used to evaluate the corrosion inhibition effect of BQA on the surface of Q235 steel in the simulated oilfield water and the sterilization effect against sulfate-reducing bacteria (SRB) in biofilm was evaluated according to traditional API. RP - 38 Standard. The experiment results show that it has effective capacity of corrosion inhibition in the simulated oilfield water and its sterilization effect is superior to the traditional biocide which is commonly used in oilfield. Also, the mechanism of its corrosion inhibition and sterilization against SRB in biofilm is proposed.