MA/AA/AMPS共聚物的合成、结构表征及阻碳酸钙垢机理研究  

Synthesis and structural characterization of MA /AA/AMPS copolymer and its inhibition mechanism to CaCO_3 scale

作　　者：郭亮[1] 金莉[1] 杨剑[1] 李东旭[1] 折利军 郭蒲[1] 朱科[2] 

机构地区：[1]中国石油长庆油田分公司第一采油厂,陕西延安716000 [2]陕西科技大学化学与化工学院教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《西安石油大学学报（自然科学版）》2014年第3期97-102,11-12,共6页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：教育部留学回国人员科研启动基金(编号:1707)

摘　　要：以马来酸酐(MA)、丙烯酸(AA)和2-丙烯酰胺-2-甲基丙磺酸(AMPS)为原料,通过自由基溶液共聚合制得MA/AA/AMPS共聚物阻垢剂。采用红外光谱(FTIR)、核磁共振光谱(H1NMR和C13NMR)和热重方法(TG-DTA)分析了MA/AA/AMPS的结构和热稳定性;采用静态阻垢法测定了MA/AA/AMPS对CaCO3的抑制性能;采用扫描电镜(SEM)和X-射线衍射(XRD)研究了碳酸钙垢样的表面形貌和结晶习性。结果表明:MA/AA/AMPS共聚物对碳酸钙具有优良的抑制性能,且适用于高温环境;MA/AA/AMPS的加入改变了碳酸钙的晶体形貌和晶体结构,能使亚稳态的球霰石和文石稳定地存在,形成的碳酸钙是方解石、球霰石和文石的混合物。MA /AA /AMPS copolymer was synthesized using maleic anhydride( MA),acrylic acid( AA) and 2-acrylamino-2-methyl-propane sulphonic acid( AMPS) as materials by radical solution copolymerization. The structure and the thermal stability of MA /AA /AMPS copolymer are investigated by FTIR,NMR( H1 NMR and C13NMR) and TG-DTA,respectively. The inhibition perform-ance of MA /AA /AMPS copolymer to CaCO3 scale is studied through static scale inhibition tests,and the morphologies and the crystal habits of CaCO3 precipitates are investigated using scanning electronic microscopy( SEM) and X-ray powder diffraction( XRD) analysis. The results show that MA /AA /AMPS copolymer is a very good CaCO3 scale inhibitor,and it is also suitable to water treatment system at high temperature. The addition of MA /AA /AMPS copolymer changes the morphology and structure of CaCO3 crystal,which makes metastable vaterite and aragonite in the system stable. The produced CaCO3 precipitate is mixture of calcite,vaterite and aragonite.

关 键 词：碳酸钙 阻垢剂 晶体 扫描电镜 X-射线衍射 

分 类 号：TQ085.4[化学工程]