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以二乙醇胺和聚琥珀酰亚胺为原料,在水体系下,合成了一种含双羟基的聚天冬氨酸衍生物(DHPAP),产物用红外光谱进行了结构表征.研究了在不同水质条件下DHPAP对Ca3(PO4)2的阻垢性能,并与以乙醇胺改性的单羟基聚天冬氨酸衍生物(HPAP)和聚天冬氨酸(PASP)进行比较.此外,研究了水体系中[Ca2+]、[PO43-]、温度和pH值对聚合物阻垢性能的影响.结果表明,DHPAP对Ca3(PO4)2的阻垢性能优异,在用量为16mg.l-1时,DHPAP对Ca3(PO4)2的阻垢率达到92.18%,而HPAP和PASP对Ca3(PO4)2的阻垢率则分别为67.09%和25.65%.DHPAP对Ca3(PO4)2的抑制作用明显优于PASP和HPAP,DHPAP.
A polyhydroxy-polyaspartic acid derivative (DHPAP) was synthesized from diethanolamine and polysuccinimide under water system, and its structure was characterized by FTIR spectroscopy. (HPP) and polyaspartic acid (PASP) modified with ethanolamine in addition to the effect of DHPAP on the scale inhibition of Ca3 (PO4) The effects of [Ca2 +], [PO43-], temperature and pH on the scale inhibition performance of the polymer were investigated. The results showed that DHPAP had a good performance in inhibiting the scale inhibition of Ca3 (PO4) 2 at the dosage of 16 mg.l- The scale inhibition rate of DHPAP to Ca3 (PO4) 2 reached 92.18%, while that of HPAP and PASP to Ca3 (PO4) 2 was 67.09% and 25.65%, respectively.DHPAP had obvious inhibitory effect on Ca3 (PO4) 2 In PASP and HPAP, DHPAP.