AA-HPA-AMPS阻垢剂最佳合成条件研究

通过溶液聚合方法,以丙烯酸、丙烯酸羟丙酯、2-丙烯酰胺-2-甲基丙磺酸为单体,以过硫酸铵为引发剂,合成AA-HPA-AMPS聚合物。固定聚合物浓度为4mg/L,分别考查反应时间、反应温度(X1)、引发剂用量(X2)、单体配比(X3)对聚合物阻CaCO3垢性能的影响,并设计了正交实验,得出聚合物在90℃、引发剂用量为13.5%、M(AA)∶M(HPA)为7∶3时,阻CaCO3垢率最高为80.9%。为探究此聚合物是否有更高的阻垢性能,应用多元回归分析对正交实验结果进行分析及验证,聚合物阻CaCO3垢效率y与各影响因素x之间基本满足y=-146.825+16.25x2,最佳聚合条件为X2=14.5,y为90.20%。

Research on Optimum Conditions of the Synthesis of the AA - HPA - AMPS Scale Inhibitor

By using the method of solution polymerization, with the ammonium persulfate as initiator, the AA - HPA - AMPS polymer is synthesized with acrylic acid, hydroxypropyl acrylate and 2 - aerylanmide - 2 - methylpro- panesulfonic acid. The polymer concentration is maintained at 4mg/L, the reaction time, the reaction temperature （X2）, the initiator dosage （X2 ） and the monomer ratio （X3 ） are examined to find out their effects on the polymer to prevent the formation of the calcium carbonate （CaCO3 ）. The orthogonal experiment shows that the highest rate of resisting CaCO3 is 80. 9% when the polymer temperature is at 90 ℃, the initiator dosage is 13.5% , and the M （AA） ： M （HPA） is at the ratio of 7： 3. A better performance is obtained by using the multiple regression analy- sis to verify the results of orthogonal experiment. That is, the best polymerization condition is x2 = 14.5 and y is 90.20%, when the relationship of the efficiency of resisting CaCO3 （y） and the various influencing factors （x） basically meets y = - 146. 825 ＋ 16.25X2.