以丙烯酸甲酯、二乙烯三胺为原料，甲醇为溶剂，采用ABx型单体自缩合法合成具有超支化聚酰胺基体HBP-NH₂，通过丙烯酸钠对其进行端氨基改性，合成具有阻垢性能的端羧基超支化聚合物HBP-COOH。采用单因素法考察了单体反应时间、原料摩尔配比、缩聚反应时间、缩聚反应温度及丙烯酸钠投加量对阻垢效果的影响。得出最佳合成工艺：单体反应时间为4 h、n（MA）：n（DETA）=1.5：1、缩聚反应时间为4 h、缩聚反应温度100℃，n（SAA）：n（-NH₂）=3.5：1。通过静态阻垢法对其阻垢性能进行初步评价，结果表明，HBP-COOH对CaSO₄具有良好的阻垢性能，当投加量为8 mg/L时，其对CaSO₄的阻垢率可达96.31%。

Taking methyl acrylate (MA) and diethylenetriamine (DETA) as raw materials,and methanol as solvent,HBP-NH₂ with hyperbranched polyamide matrix is synthesized by self-polycondensation of ABx monomers.Carboxyl terminated hyperbranched polymers (HBP-COOH) with scale inhibition property is prepared through using sodium acrylate (SA) to modify HBP-NH₂.The effects of the time for monomers reaction,molar ratio between raw materials,time for polycondensation reaction,polycondensation temperature and dosage of SA on scale inhibition performance of HBP-COOH are investigated by using single factor analysis method.The best synthesis conditions are as follows:the time for monomers reaction is 4 h,n(MA):n(DETA)=1.5:1,the time for polycondensation reaction is 4 h,polycondensation reaction temperature is at 100℃ and n(SAA):n(-NH₂)=3.5:1.The scale inhibition performance of HBP-COOH is evaluated by static scale inhibition method.The experimental results show that HBP-COOH has excellent scale inhibition effect against CaSO₄,its scale inhibition rate against calcium sulfate can reach 96.31% when the dosage of HBP-COOH is 8 mg·L^-1.

钱凯(1993-),男,硕士研究生,主要从事水处理药剂的研究,18262816605@163.com。