The purpose of this study is to construct a scale inhibitor with high efficiency for calcium carbonate scale, calcium sulfate scale and barium sulfate scale. For this purpose, the ter-copolymer P(MA-AMPS-HPA) was synthesized by aqueous solution polymerization method using maleic anhydride (MA), 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and hydroxypropyl acrylate (HPA) as raw materials and ammonium persulfate as initiator. The optimum synthesis conditions of ter-copolymer P(MA-AMPS-HPA) were discussed by single factor method. The relationship between the scale inhibition performance and the molecular weight of ter-copolymer P(MA-AMPS-HPA) was discussed. The structure of ter-copolymer P(MA-AMPS-HPA) was characterized by FTIR. TGA showed that ter-copolymer P(MA-AMPS-HPA) had excellent thermal stability. The scale inhibition mechanism for different scale samples was preliminarily investigated by SEM and EDS analysis. The scale inhibition performance of ter-copolymer P(MA-AMPS-HPA) was evaluated by changing the concentration of ter-copolymer P(MA-AMPS-HPA) in aqueous solution, the experimental temperature and pH of the solution. It was found from the tests results that the scale inhibition rate of ter-copolymer P(MA-AMPS-HPA) for calcium carbonate scale, calcium sulfate scale and barium sulfate scale reached 100%, 98% and 72%, respectively. By comparison, the synthesized ter-polymer had better scale inhibition effect than the bicopolymer.

这项研究的目的是构建一种对碳酸钙水垢，硫酸钙水垢和硫酸钡水垢具有高效率的阻垢剂。为此，采用水溶液聚合法，以马来酸酐（MA），2-丙烯酰胺基-2-甲基丙烷磺酸（AMPS）和丙烯酸羟丙酯（HPA）为原料，合成三元共聚物P（MA-AMPS-HPA）。和过硫酸铵作为引发剂。通过单因素法探讨了三元共聚物P（MA-AMPS-HPA）的最佳合成条件。讨论了三元共聚物P（MA-AMPS-HPA）的阻垢性能与分子量之间的关系。用FTIR对三元共聚物P（MA-AMPS-HPA）的结构进行了表征。TGA表明三元共聚物P（MA-AMPS-HPA）具有优异的热稳定性。通过SEM和EDS分析初步研究了不同比例样品的阻垢机理。通过改变水溶液中三元共聚物P（MA-AMPS-HPA）的浓度，实验温度和溶液的pH来评估三元共聚物P（MA-AMPS-HPA）的阻垢性能。从测试结果发现，三元共聚物P（MA-AMPS-HPA）对碳酸钙垢，硫酸钙垢和硫酸钡垢的阻垢率分别达到100％，98％和72％。相比之下，合成的三元共聚物具有比二元共聚物更好的阻垢效果。通过改变水溶液中三元共聚物P（MA-AMPS-HPA）的浓度，实验温度和溶液的pH来评估三元共聚物P（MA-AMPS-HPA）的阻垢性能。从测试结果发现，三元共聚物P（MA-AMPS-HPA）对碳酸钙垢，硫酸钙垢和硫酸钡垢的阻垢率分别达到100％，98％和72％。相比之下，合成的三元共聚物具有比二元共聚物更好的阻垢效果。通过改变水溶液中三元共聚物P（MA-AMPS-HPA）的浓度，实验温度和溶液的pH来评估三元共聚物P（MA-AMPS-HPA）的阻垢性能。从测试结果发现，三元共聚物P（MA-AMPS-HPA）对碳酸钙垢，硫酸钙垢和硫酸钡垢的阻垢率分别达到100％，98％和72％。相比之下，合成的三元共聚物具有比二元共聚物更好的阻垢效果。