兼有缓蚀与降黏性的聚丙烯酸甲酯-丙烯酸咪唑啉制备及性能评价

Preparation and Performance Evaluation of Poly Methyl Acrylate-acrylic Acid Imidazoline with Corrosion Inhibition and Viscosity Reduction Effect

林富荣 仲艳艳 曾天亮

LIN Furong， ZHONG Yanyan， ZENG Tianliang

为开发兼有缓蚀与降黏作用的多功能油品添加剂， 以丙烯酸甲酯和丙烯酸咪唑啉为原料制备了聚丙烯酸甲酯-丙烯酸咪唑啉（MA-ACI）， 用红外光谱对其结构进行了表征， 用凝胶渗透色谱对其分子量进行了检测。采用旋转挂片和电化学 Tafel极化曲线法评价了 MA-ACI的缓蚀性能， 用旋转黏度计研究了 MA-ACI的降黏性能。结果表明， 在丙烯酸甲酯与丙烯酸咪唑啉摩尔比 8∶1、 引发剂偶氮二异丁腈加量 1.0%、 反应温度 80℃、 反应时间10 h的条件下制得的 MA-ACI（相对分子质量 36582）对 N80金属钢片具有良好的缓蚀作用， 对江苏油田韦 5-57井原油具有较好的降黏作用。在 30℃、 MA-ACI 加量为 0.10 g/L 时， 用旋转挂片法测得的缓蚀率为 82.06%，MA-ACI加量为 0.40 g/L时， 用电化学极化曲线法测得的缓蚀率为 90.21%； 在 70℃、 MA-ACI加量为 100 μg/g时，江苏油田韦 5-57井原油的降黏率为85.28%。图11表 2参21

In order to develop a multifunctional oil additive with corrosion inhibition and viscosity reduction，poly methyl acrylate-acrylic acid imidazoline（MA-ACI）was synthesized using methyl acrylate and acrylic imidazoline as raw materials， and characterized by FT-IR and gel permeation chromatography（GPC） . The corrosion inhibition property of MA-ACI was evaluated by rotating hanging plate method and electrochemical Tafel polarization curve method， and its viscosity reduction property was sdudied by rotating viscometer. The results showed that MA-ACI with the relative molecular weight 36582 could be obtained under the condition of 8∶1 molar ratio of methyl acrylate to acrylic imidazoline， 1% initiator AIBN， 80℃ reaction temperature and 10 h reaction time. MA-ACI had good corrosion inhibition effect on N80 steel sheet， and had good viscosity reducing effect on crude oil of Wei5-57 well in Jiangsu oilfield. At 30℃， the inhibition rate measuring by rotating hanging plate method was 82.06% with MA-ACI dosage of 0.10 g/L， and that measuring by electrochemical polarization curve method was 90.21% with MA-ACI dosage of 0.40 g/L. The viscosity reduction rate of crude oil of Wei5-57 well in Jiangsu oilfield was 85.28% under the condition of 100 μg/g MA-ACI and 70℃

10.19346/j.cnki.1000-4092.2018.01.027