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| 摘要: |
| 以丙烯酸、甲基丙烯磺酸钠和丙烯酸聚氧乙烯酯为单体、过硫酸铵为引发剂,经水溶液聚合制备了可用作聚羧酸盐高效减水剂的聚醚接枝丙烯酸/甲基丙烯磺酸钠共聚物.讨论了聚合体系中各单体用量和侧链聚合度对减水剂性能的影响,结果表明:引发剂用量为2%(质量分数)、聚合温度为70℃、聚合时间为5 h是较合适的聚合条件.另外还通过红外光谱表征了聚醚接枝丙烯酸/甲基丙烯磺酸钠共聚物的结构. |
| 关键词: 聚羧酸盐,减水剂,丙烯酸,甲基丙烯磺酸钠,大分子单体 |
| DOI： |
| 分类号:TU528.041 |
| 基金项目: |
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| Preparation of Polycarboxylate Superplasticizer(Ⅱ)——Synthesis and Characterization of Polyether Grafted Copolymer |
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WANG Guo-jian WEI Jing-liang
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| Abstract: |
| A polyether grafted copolymer of acrylic acid/sodium methylacrylsulfonate,which can be used as superplasticizer,was prepared by water solution polymerization using acrylic acid,sodium methylacrylsulfonate and acrylic acid-polyoxyethylene ester as monomers and ammonium persulfate as initiator.The influence of dosage of monomers and length of side chain on the properties of water-reducer are discussed and the suitable technologic conditions are determined.The structure of copolymer was characterized by FT-IR spectrum. |
| Key words: polycarboxylate,water-reducer,acrylic acid,sodium methylacrylsulfonate,macro-(monomer) |
