丝氨酸改性聚环氧琥珀酸阻垢剂的合成及其阻垢性能  

Synthesis and Scale Inhibition Performance of Serine-Modified Polyepoxysuccinic Acid Scale Inhibitor

作　　者：柳鑫华 关俊霞[1] 王丽红[1] 付占达 高玉华[3] 魏金芳[1] 王磊[1] 杨勇 李文涛 LIU Xin-hua;GUAN Jun-xia;WANG Li-hong;FU Zhan-da;GAO Yu-hua;WEI Jin-fang;WANG Lei;YANG Yong;LI Wen-tao(Department of Chemistry,Tangshan Normal University,Tangshan 063000,China;Tangshan Key Laboratory of Green Specialty Chemicals,Tangshan 063000,China;Institute of Energy,Hebei Academy of Sciences,Shijiazhuang 050081,China)

机构地区：[1]唐山师范学院化学系,河北唐山063000 [2]唐山市绿色专用化学品重点实验室,河北唐山063000 [3]河北省科学院能源研究所,河北石家庄050081

出　　处：《材料保护》2022年第8期95-101,共7页Materials Protection

基　　金：河北省钢铁联合自然基金项目(B2017209228);唐山师范学院基金项目(2022C42)资助。

摘　　要：聚环氧琥珀酸(PESA)是一种绿色环保阻垢剂,因官能团单一从而性能受到限制。为增强其性能,本试验用丝氨酸(Ser)作为改性剂对PESA进行了改性研究,探究了改性的最优合成工艺条件。用红外光谱(FTIR)和核磁共振氢谱(NMR)进行了目标产物的结构表征。通过热重试验探析了改性产品的热稳定性。研究显示:在90℃下,聚环氧琥珀酸与丝氨酸的质量比为1.0∶0.8,反应时间2.0 h条件下改性,聚环氧琥珀酸衍生物(Ser-PESA)阻垢性能最佳。当PESA和Ser-PESA的投加量为10 mg/L时,对碳酸钙的阻垢率分别可达86%和96%。钙垢红外光谱和扫描电镜形貌证明加入阻垢剂PESA和Ser-PESA后碳酸钙结构由稳定的方解石结构变成了不稳定的球霰石结构。Polyepoxysuccinic acid(PESA) is a green and environmental scale inhibitor.Its application is limited due to its single functional group.In order to enhance its performance,an experiment was carried out by using serine(Ser) as the modifier to modify the PESA,and the optimal synthesis process conditions for the modification were investigated.The structure of the target product was characterized by Fourier transform infrared spectroscopy(FTIR) and nuclear magnetic resonance(NMR).The thermal stability of the modified product was investigated through thermogravimetric experiment.Results showed that under the conditions that the temperature was 90 ℃,the mass ratio of polyepoxysuccinic acid to serine was 1.0∶0.8,and the action time was 2 h,the best scale inhibition performance of the polyepoxysuccinic acid derivative(Ser-PESA) could be obtained.When the dosage of PESA and Ser-PESA was 10 mg/L,the scale inhibition rate against calcium carbonate could reach 86% and 96% respectively.The FTIR and SEM images of calcium scale showed that the structure of calcium carbonate was changed from stable calcite structure to unstable vaterite structure after adding PESA and Ser-PESA.

关 键 词：聚环氧琥珀酸 丝氨酸 阻垢 改性共聚物 阻垢机理 

分 类 号：TG174.42[金属学及工艺—金属表面处理]