【摘要】 探讨不同催化剂对聚天冬氨酸(PASP)聚合反应的影响,采用正交试验法优化合成工艺。研究结果表明:磷酸作为催化剂能有效改善PASP溶液颜色和提高聚合物的相对分子质量。最佳合成工艺条件为:马来酸酐和碳酸铵单体质量比为1∶1.2,磷酸用量为2.5%,聚合温度为200℃,聚合反应时间2 h时,制备的PASP的特性粘数为0.083 dL/g。阻垢实验结果显示,特性粘数高于0.05 dL/g的PASP的阀值质量浓度为10 mg/L,其阻垢率均达到85%以上。更多还原

【Abstract】 The process and performance of polyaspartic acid were discussed by using various catalysts.The result showed that phosphorus acid as catalysts can reform color appearance and improve molecular weight of PASP.The orthogonal test results showed that the rate of maleic anhydride and salvolatile of 1 ∶ 1.2,2.5% of phosphorus acid,at 200℃ for 2h,the specific viscosity is 0.083 dL/g.Over 10mg/L of the valve concentration,the scale inhibition rate is more than 85%.更多还原