木质素阳离子三元共聚物的制备及其缓蚀性能  

Preparation and Corrosion Inhibition Performance of Lignin -DMDAAC-AM Graft Terpolymer

作　　者：任以伟[1] 罗逸[1] 刘伦华[1] 李海玲[1] 杨暹[2] 

机构地区：[1]华中科技大学化学系,湖北武汉430074 [2]长庆油田第四采油厂工艺所,陕西靖边718500

出　　处：《材料保护》2007年第10期68-70,共3页Materials Protection

摘　　要：从造纸黑液中提取木质素，与二甲基二烯丙基氯化铵、丙烯酰胺接枝共聚，得到三元共聚物HGL—Z。采用静态挂片法和电化学方法研究了HGL-Z的缓蚀性能。结果表明：HGL-Z在10％HCl体系中不同温度范围内均有很好的缓蚀效果，在80℃时，最高缓蚀率达到95．55％，在25～80℃内，缓蚀剂分子在A3钢表面的吸附符合Temkin吸附等温式。由吸附自由能（-△Gads）计算得知，缓蚀剂分子在金属表面的吸附是化学吸附，也证实了温度提高，缓蚀剂分子的吸附能力降低。The HGL-Z terpolymer had been obtained by grafting copolymeri-zation of both dimethyl diallyl ammonium chloride ( DMDAAC) and acrylamide (AM) onto the lignin from treating paper- pulping black liquor in acidification. The corrosion inhibition properties of the terpolymer were tested. The results showed that the corrosion inhibition percentage was over 95% in the 10% HC1 solution at 25 - 80 ℃. The adsorption of HGL-Z followed Temkin isotherm at 25 - 80 ℃. The HGL- Z adsorption on the steel surface was confirmed as a chemisorption, and the absorption capability was in inverse proportion to temperature according to - ΔGads.

关 键 词：木质素 丙烯酰胺 二甲基二烯丙基氯化铵 三元共聚物 A3钢 缓蚀剂 缓蚀性能 

分 类 号：TG174.42[金属学及工艺—金属表面处理]