以马来酸酐(MA)、丙烯酸(AA)和甲基丙烯酸羟乙酯(HEMA)为单体,亚硫酸氢钠-过硫酸铵为引发剂,叔丁醇为分子量调节剂,采用水溶液自由基聚合法,合成 MA/AA/HEMA新型三元共聚物阻垢分散剂,并通过正交实验测试法得出其最佳合成条件.通过静态沉淀抑制法对三元共聚物的阻垢性能进行评价,共聚物投加量为4 mg/L时,对CaCO3的阻垢率最佳,达到93.72%.利用红外光谱和扫描电子显微镜对共聚物的结构进行分析,共聚物结构中具有羧基、酰胺基、酯基和磺酸基等官能团,且具有较大的比表面积使得凝聚分散作用抑制CaCO3沉淀容易进行.
With maleic anhydride (MA), acrylic acid (AA) and hydroxyethyl methacrylate (HAMA) as the monomer,sodium bisulfite ammonium persulfate as initiator, a novel terpolymer scale inhibitor was synthesized though aqueous radical polymerization, orthogonal experiment on factors affecting the scale properties of the copolymer were optimized ,the optimal condition is determined.By the static experiment method ,the performance of terpolymer scale inhibitor is evaluted.When the copolymer dosage was 4 mg/L, the scale inhibiting rate for CaCO3 was best,reaching 93.72%.The copolymers was analyzed with infrared spectroscopy and scanning electron microscope, it containing carboxyl,ester, amide and sulfonic acid , and the specific surface area made dispersion and agglomeration inhibiting CaCO3 precipitate easy.
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