利用酯化废水制备聚丙烯酸及其阻垢性能研究
Preparation of Polyacrylic Acid Using Esterified Wastewater and Its Scale Inhibition Properties Research
尹用飞1
作者信息
- 1. 海利得新材料研究(上海)有限公司(上海 201203)
- 折叠
摘要
以光固化单体生产中的酯化废水为部分原料,采用过硫酸铵-亚硫酸氢钠为氧化还原体系引发剂,以水溶液聚合法制备聚丙烯酸阻垢剂.通过正交试验确定了最优工艺条件:亚硫酸氢钠用量为 4%,过硫酸铵用量为 2%,引发温度为75℃,滴加时间为1.0 h,反应时间为2h,反应液中丙烯酸单体质量分数为 25%.当其摩尔质量为3952 g/mol时,对碳酸钙的阻垢率最高,达到85%.该工艺条件下,酯化废水消耗率达到 80%左右.
Abstract
Polyacrylic acid scale inhibitor was prepared by aqueous solution polymerization method using esterifica-tion wastewater from the production of light-curing monomers as part of the raw material,and ammonium persulfate-sodi-um bisulfite as the initiator of redox system.Through orthogonal experiments,it was found that the optimal polymerization process were sodium bisulfite at 4%and ammonium persulfate at 2%,the initiation temperature was 75℃,the dropping time was 1.0 hour,the reaction time was 2 hours,and the mass concentration of acrylic acid monomer was 25%.When the molecular mass of polyacrylic acid was 3952 g/mol,it had the highest scale inhibition rate of 85%for calcium carbonate.Under the optimal conditions,the consumption rate of esterification wastewater reached about 80%.
关键词
光固化单体/酯化废水/聚丙烯酸/阻垢率Key words
Light-curing monomers/Esterification wastewater/Polyacrylic acid/Scale inhibition rate引用本文复制引用
出版年
2024
NETL
NSTL
万方数据