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.
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