摘要：

合成了含不同比例膦酰基团的聚天冬氨酸衍生物，对其阻CaCO₃、CaSO₄和Ca₃(PO₄)₂垢性能进行了评定，并与聚天冬氨酸进行了比较。结果表明：n(PSI)∶n(ED)∶n(ME)∶n(PH)=10∶2∶16∶16时对CaSO₄和Ca₃(PO₄)₂的阻垢性能最好；n(PSI)∶n(ED)∶n(ME)∶n(PH)=10∶7∶31∶31时对CaCO₃的阻垢性能和综合性能最佳，且PH-ED-PASP在质量浓度为6mg/L时，对CaCO₃和CaSO₄的阻垢率分别为93.4%和99.3%，在质量浓度为10mg/L时，对Ca₃(PO₄)₂的阻垢率为9.13%。

关键词: 聚天冬氨酸衍生物, 膦酸, 阻垢性能

Abstract:

Polyaspartic acid derivatives containing different content of phosphonyl group have been synthesized.Their performance of inhibiting CaCO₃, CaSO₄ and Ca₃( PO₄)₂ has been evaluated and compared with polyaspartic acid. The results show that the performance of inhibiting CaSO4 and Ca₃( PO₄)₂ is the best when n( PSI) ∶n( ED) ∶n(ME) ∶n( PH) =10∶2∶16∶16, the performance of inhibiting CaCO₃ and all-around performance are the best when n( PSI) ∶n( ED) ∶n(ME) ∶n( PH) =10∶7∶31∶31, and at a dosage of 6 mg/L of PH-ED-PASP, the inhibition rate of the agent on CaCO₃ and CaSO₄ is 93.4% and 99.3% respectively, and at a dosage of 10 mg/L, the inhibition rate of the agent on Ca₃( PO₄)₂ is 9.13%.

Key words: polyaspartic acid derivative, phosphonic acid, scale inhibition

中图分类号: 

• TQ085.4