【摘要】 采用经典的挂片失重法和电化学方法研究了CN 11膦羧酸型缓蚀阻垢剂在自来水中,在不同温度下的敞开系统和85℃的充氮脱氧密闭系统中对碳钢的缓蚀性能,并探讨该缓蚀剂的阻垢作用。结果表明:该缓蚀剂的缓蚀效率不高,使用不当甚至会加速腐蚀,但加入该缓蚀剂能明显阻止锈垢的生成,大大减小了垢下局部腐蚀的发生,提高抗局部腐蚀能力,可明显延长设备的实际使用寿命,另一方面由于其阻垢作用而保证了传热效果。CN 11型缓蚀剂具有缓蚀与阻垢的双重功效,具有实用意义与发展潜力。更多还原

【Abstract】 In hibition and scaling behaviors of CN - 11 phosphono - carboxylic acid inhibitor were studied by using classical weight - loss meas urement and electrochemical method in different temperature open system or in 85℃ closed system of tap water. Results show that the inhibition of CN-11 is not good and will accelerate corrosion if misapplication, but enhances the local corrosion resistance and then increase the actual life of equipment because it can prevent the form of rust clearly and decreases the corrosion under scale. On the other hand, the inhibitor ensures the heat conducting effect for scale inhibiting. So CN-11 inhibitor has double efficacy of corrosion inhibition and scale inhibition to provide with practi cal potential.更多还原