双组分环氧防腐蚀涂层的制备及其在西北油田酸性环境中的适应性评价  

Preparation of Two-Component Epoxy Anticorrosion Coating and Its Adaptability Evaluation in Northwest Oilfield Acid Environment

作　　者：高强 程正骏 池伸 艾俊哲[1] GAO Qiang;CHENG Zhengjun;CHI Shen;AI Junzhe(School of Chemistry and Environmental Engineering,Yangtze University,Jingzhou 434023,China)

机构地区：[1]长江大学化学与环境工程学院,荆州434023

出　　处：《腐蚀与防护》2022年第9期27-34,共8页Corrosion & Protection

摘　　要：针对西北油田酸性腐蚀环境,以双酚A环氧树脂为主要原料,在N80碳钢表面制备了双组分环氧防腐蚀涂层GQ。通过模拟西北油田环境的适应性评价试验,分析了GQ涂层在3种模拟西北油田环境中的物理性能和耐蚀性。结果表明:GQ涂层的物理性能优良,其附着力、耐冲击力和硬度分别为12.25 MPa、6.2 J与4 H;在腐蚀性较强的模拟环境3中腐蚀30 d后,GQ涂层的附着力、耐冲击力和硬度分别为8.74 MPa、5.3 J与3 H,未出现明显缺陷;GQ涂层具有良好的热稳定性,当温度低于325℃时,该涂层几乎无质量损失;GQ涂层具有良好的电化学稳定性,在油田现场水样中浸泡480 h后,涂层的阻抗模值仍大于10^(9)Ω·cm^(2),涂层表现出良好的耐蚀性。Aiming at the acid corrosive environment of northwest oilfield,using bisphenol A epoxy resin as the main raw material,two-component epoxy anti-corrosion coating GQ was prepared on the surface of N80 carbon steel.The physical properties and corrosion resistance of GQ coating in three simulated northwest oilfield environments were analyzed by adaptability evaluation test of simulated northwest oilfield environment.The results showed that GQ coating had excellent physical properties,and its adhesion,impact resistance and hardness were 12.25 MPa,6.2 J and 4 H,respectively.After corrosion in the highly corrosive simulated environment 3 for 30 d,the adhesion,impact resistance and hardness of GQ coating were 8.74 MPa,5.3 J and 3 H,respectively,without obvious defects.GQ coating had good thermal stability,when the temperature was lower than 325℃,the coating had almost no quality loss.GQ coating had good electrochemical stability after immersion in oil field water samples for 480 h,the impedance modulus value of the coating was still greater than 10^(9)Ω·cm^(2),and the coating showed good corrosion resistance.

关 键 词：双酚A环氧树脂 西北油田 适应性评价 耐蚀性 

分 类 号：TQ630.1[化学工程—精细化工]