新型水处理剂聚天冬氨酸的研究

对新型水处理剂聚天冬氨酸的合成，热稳定性及阻垢性能进行了研究。研究结果表明：聚天冬氨酸的合成工艺简单，热稳定性好，阻垢性能优异，投加量少，是一种可用于高温，高钙离子浓度水系统的水处理剂。

Research On Polyaspartic Acid--A New Type Water Treatment Agent

The synthesis, thermal stability and scale inhibition behavior of polyaspartic acid, a new type water treatment agent, are discussed in this paper. Several conclusions have been drawn: The process of synthesizing polyaspartic acid from Laspartic is simple. The raw material, synthetic process and the application of polyaspartic acid all could do no harm to environment and body. The polyaspartic acid can be applied widely in high temperature water system due to its excellent thermal stability. The ideal inhibition behavior for calcium carbonate can be achieved with polyaspartic acid even at its low dosages. The inhibition rate is up to 88% at the dosages of 0.2 mg/L and 100% at 2.0mg/L. The decreasing tendency of inhibition rate with increasing Ca2 concentration could be slowed by increasing polyaspartic acid concentration, and polyaspartic acid is perfect to be applied in high Ca2 concentration water system.