采用旋转挂片腐蚀试验法研究了磺酸甲胺基聚环氧琥珀酸(SMA/PESA)及其与钨酸钠、锌盐复配对模拟水中A3钢的缓蚀作用.单一配方的Na2WO4、SMA/PESA、Zn2+对碳钢均有一定的缓蚀作用.在缓蚀剂总浓度为70 mg/L,SMA/PESA与Na2WO4的浓度比为9∶1时,复配缓蚀剂对碳钢的缓蚀率最大为87.96%；缓蚀剂总浓度70 mg/L,当Zn2+的投加量为4.0 mg/L,SMA/PESA-Na2WO4-Zn2+按9∶1时,三元复配缓蚀剂对碳钢的缓蚀率最大为93.76%.试验结果表明:SMA/PESA与Na2WO4、Zn2+具有良好的协同效应.

The inhibition effect of corrosion inhibitors such as sulfonicmethaneaminopolyepoxy-succinic(SMA/PESA) and its complex for carbon steel in simulated water was evaluated by rotary coupon corrosion test.The results indicate that the Na2WO4 showed the best inhibition efficiency of 68.55% in the concentration of 200 mg/L,the best inhibition efficieny of SMA/PESA was up to 85.9% when its concentration was 100 mg/L,also Zn2+ showed the best inhibition efficiency when its concentration reached 35 mg/L.When the total concentration of corrosion inhibitors was 70 mg/L and the ratio of SMA/PESA to Na2WO4 was 9∶1,the inhibition effciency was up to 87.96%,and the coinhibition efficiency could reach 93.76% by adding 4 mg/L zinc sulfate to the complex inhibitor.The SMA/PESA has a good synergistic effect with Na2WO4 and Zn2+.