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以丙烯酸(AA)、丙烯酸羟丙酯(HPA)和乙烯基磺酸钠(SVS)为单体,过硫酸铵为引发剂,异丙醇为链转移剂,在水相中进行自由基聚合反应,合成了AA/HPA/SVS水溶性三元共聚物阻垢剂。系统考察了聚合工艺条件对该共聚物阻垢效果的影响,并对其阻垢分散性能进行了初步评价。结果表明,n(AA):n(HPA):n(SVS)为3:1:1,引发剂用量为14%,链转移剂用量为10%,反应温度为90℃,反应时间为2.5h时,合成的共聚物阻垢性能最佳,在用量为16mg·L-1时对碳酸钙和磷酸钙的阻垢率均能达到90%以上,并且具有较好的钙容忍度和分散氧化铁性能。
Using acrylic acid (AA), hydroxypropyl acrylate (HPA) and sodium vinyl sulfonate (SVS) as monomers, ammonium persulfate as initiator and isopropyl alcohol as chain transfer agent, radical polymerization was carried out in aqueous phase , Synthesized AA / HPA / SVS water-soluble terpolymer scale inhibitor. The effects of polymerization conditions on the scale inhibition were systematically investigated. The scale inhibition and dispersion properties of the copolymer were also evaluated. The results showed that the ratio of n (AA): n (HPA): n (SVS) was 3: 1: 1, the amount of initiator was 14%, the amount of chain transfer agent was 10%, the reaction temperature was 90 ℃ and the reaction time was 2.5h , The synthesized copolymer has the best scale inhibition performance. When the dosage is 16 mg · L-1, the scale inhibition rate of calcium carbonate and calcium phosphate can reach more than 90%, and has better calcium tolerance and dispersion of iron oxide performance.