利用自由基聚合法合成了新型衣康酸三元共聚阻垢剂IA-HEMA-AMPS，探究对共聚物阻垢性能的影响因素。结果表明，IA-HEMA-AMPS共聚物中出现了羧基中—CO和—OH的伸缩振动吸收峰，含有大量磺酸、酯基、羟基、酰胺基等官能团；当羧酸基和磺酸基比例相当、引发剂质量为单体总质量的6%、引发温度为80℃、反应时间为2~2.5 h时，合成的共聚物阻垢性能良好。IA-HEMA-AMPS在28 d内降解性达到53.8%，为易生物降解。当药剂质量浓度为5 mg/L时，测定其氧化铁透光率为43.1%，表明共聚物有一定的分散氧化铁性能。SEM分析表明，共聚物有效抑制了碳酸钙垢的生长。通过与市售阻垢剂进行各项指标对比可以看出，该三元共聚物的阻垢性能具有一定优势。

A new type of itaconic acid terpolymer scale inhibitor IA-HEMA-AMPS is synthesized by free radical polymerization.The factors affecting the scale inhibition performance of terpolymer are studied.It is found that the stretching peaks of -CO and -OH for the carboxyl group appear in the IA-HEMA-AMPS terpolymer,indicating that the terpolymer contains a large number of functional groups such as sulfonic acid,carboxyl group,ester group,hydroxyl group and amide group.The synthetic copolymer has good scale inhibition performance when the proportion of the carboxylic acid group is the same as that of the sulfonic acid group,the initiator dosage is 6% of the total dosage of monomers,the initiation temperature is set at 80℃,the reaction time is in the range of 2 h to 2.5 h.The degradation rate of IA-HEMA-AMPS can reach 53.8% in 28 days,representing it is biodegradable.The transmittance of iron oxide is detected as 43.1% when the terpolymer concentration is 5 mg·L^-1,indicating that this terpolymer has a certain dispersion of iron oxide performance.SEM analysis shows that IA-HEMA-AMPS can inhibit the growth of calcium carbonate scale.Through comparing with the commercially available scale inhibitor,the terpolymer has better dispersion capacity.

余嵘(1969-),女,硕士,副教授,主要从事水处理药剂的研制与开发、建筑给水排水节能与优化等研究,18729008199@163.com