Abstract:

The static scale inhibition performance against CaCO₃, CaSO₄, and Ca₃(PO₄)₂ scale, and zinc salt stabilization, corrosion inhibition and biodegradability of PESA-g-PAA/AHPS were researched. The results showed that, the CaCO₃ and CaSO₄ scale inhibition rate of PESA-g-PAA/AHPS reaches 99.6% and 99.8% respectively at the dosage of 10 mg/L. The Ca₃(PO₄)₂ scale inhibition rate, the zinc salt stabilization rate and the corrosion inhibition rate of PESA-g-PAA/AHPS reach 93.7%, 91.1%, and 66.2% respectively at the dosage of 50 mg/L. The performance of PESA-g-PAA/AHPS was much better than that of unmodified PESA. PESA-g-PAA/AHPS maintained its biodegradability similar to PESA, with the biodegradation rate of 71.6% at 28 days. PESA-g-PAA/AHPS is a green scale inhibitor with good comprehensive properties.

Key words: green scale inhibitor, polyepoxysuccinic acid, compounding, scale inhibition, corrosion inhibition, biodegradability

摘要：

研究了聚环氧琥珀酸接枝聚丙烯酸/烯丙氧基羟丙基磺酸钠（PESA-g-PAA/AHPS）对CaCO₃、CaSO₄、Ca₃（PO₄）₂的静态阻垢性能、稳定锌盐性能、缓蚀性能和生物降解性能。结果表明，投加量为10 mg/L时，PESA-g-PAA/AHPS对CaCO₃和CaSO₄的阻垢率分别达到99.6%、99.8%；投加量为50 mg/L时，PESA-g-PAA/AHPS对Ca₃（PO₄）₂的阻垢率、锌盐稳定率、Q235碳钢的缓蚀率分别为93.7%、91.1%、66.2%，性能较未改性的PESA大幅提高。PESA-g-PAA/AHPS保持了PESA的可生物降解性，28 d的生物降解率达到71.6%。PESA-g-PAA/AHPS是一种综合性能良好的绿色阻垢剂。

关键词: 绿色阻垢剂, 聚环氧琥珀酸, 复配, 阻垢, 缓蚀, 生物降解

CLC Number: 

• TQ085