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聚醚型无磷共聚物的合成及其阻垢性能

李娜1,符嫦娥2,周钰明3,陆祎品1,杨维本1*   

  1. (1.南京师范大学化学与材料科学学院 南京 210097；
    2.江苏广播电视大学 南京 210036；3.东南大学化学化工学院 南京 211189)
  • 收稿日期:2012-08-13 修回日期:2012-10-24 出版日期:2013-05-10 发布日期:2013-05-10
  • 通讯作者: 杨维本，副教授; Tel:025-85891707; E-mail:yangwb007@njnu.edu.cn; 研究方向：多孔吸附材料的合成与表征；新型有机物污染治理与理论
  • 基金资助:
    国家自然科学基金(51278253-)江苏省自然科学基金(BK2011691)资助项目

Synthesis and Scale Inhibition of a Polyether-typed Non-phosphorus Copolymer

LI Na1, FU Change2, ZHOU Yuming3, LU Yipin1, YANG Weiben1*   

  1. (1.College of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210097,China;
    2.Jiangsu TV Radio University,Nanjing 210036,China;
    3.School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189，China)
  • Received:2012-08-13 Revised:2012-10-24 Published:2013-05-10 Online:2013-05-10
  • Contact: Yang

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1819

被引次数

1

摘要： 以水为溶剂，丙烯酸(AA)和烯丙氧基聚醚羧酸钠(APEX)为单体，合成了一种新型的无磷聚醚共聚物(APEX/AA)。 通过红外光谱、热重分析及凝胶渗透色谱对聚合物进行了表征。 通过静态法评价了APEX/AA用量、溶液钙离子浓度、pH值、温度对APEX/AA阻磷酸钙垢率的影响。 结果表明，聚合物APEX/AA有良好的热稳定性（至350 ℃才明显失重），相对分子质量分布可控(PDI=1.41~1.88)。 APEX/AA在用量6 mg/L时阻磷酸钙垢率达到100%，APEX/AA阻磷酸钙垢效果优于羟基亚乙基二膦酸、丙烯酸/丙烯酸羟丙酯、2-膦酸丁烷-1,2,4-三羧酸等商业阻垢剂，适用于高钙（Ca2+浓度200~2000 mg/L）、高pH值（7.5~11.0）和高温（75~95 ℃）水质，是一种工业循环水系统中性能优良的阻磷酸钙垢无磷阻垢剂。

关键词: 循环冷却水, 无磷共聚物, 磷酸钙

Abstract: A new type of polyether copolymer—allyloxy polyether carboxylic acid sodium/acrylic acid(APEX/AA) was synthesized using water as solvent and APEX and AA as monomers. Polymer APEX/AA was characterized by infrared spectroscopy, thermogravimetric analysis and gel permeation chromatography. The dosage of APEX/AA, calcium ion concentration in solution, pH and temperature were evaluated on phosphate calcium scale inhibition efficiency through static method. The results show that the polymer APEX/AA has good thermal stability at temperature above 350 ℃, and its relative molecular mass distribution is controllable(PDI=1.41～1.88). The phosphate calcium scale inhibition efficiency of APEX/AA reached 100% when a concentration of 6 mg/L aqueous system was used. The results show that APEX/AA is suitable for water with a high calcium ion concentration（200~2000 mg/L）, high pH（7.5~11.0） and high temperature(75~95 ℃). The scale inhibition effect of APEX/AA is superior to that of commercial calcium phosphate scale inhibitors such as 1-hydroxyethylidine-1,1-diphosphonic acid(HEDP), hydroxypropyl acrylate/acrylic acid(T-225) and 2-phosphonobutane-1,2,4-tricarboxylic acid(PBTCA), indicating that APEX/AA is an excellent non-phosphorus phosphate calcium scale inhibitor in the industrial circulating water systems.

Key words: circulating cooling water, non-phosphorus copolymer, calcium phosphate

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