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EPEG抗泥减水型聚羧酸减水剂的合成及性能研究
作者：潘阳1，齐冬有2，邹德麟3，汪源1，汪智勇2，郝禄禄3，纪宪坤1，张钰2，刘洪印3
（1.武汉三源特种建材有限责任公司，湖北 武汉 430083；
2.建筑材料工业技术监督研究中心，北京 100024；
2.建筑材料工业技术监督研究中心，北京 100024；
3.中核国电漳州能源有限公司，福建 漳州 363300）
摘要：采用乙二醇单乙烯基聚乙二醇醚（EPEG）、丙烯酸和抗泥单体三元共聚合成EPEG抗泥减水型聚羧酸减水剂，通过七因素三水平正交试验分析酸醚比、底料浓度等因素对减水剂性能的影响，并在正交试验最佳合成工艺的基础上研究了主链长度和侧链密度对合成减水剂抗泥、分散性能的影响。试验结果表明，该减水剂的最佳合成工艺为：酸醚比4.5，巯基丙酸用量1.8%，磺酸基团功能单体用量3.0%、甲醛合次亚硫酸氢钠用量0.18%、底料浓度65%。混凝土试验结果表明，在使用机制砂的情况下，所合成的减水剂具有良好的抗泥、增强效果。
关键词：乙烯醚类大单体EPEG；聚羧酸减水剂；合成；抗泥；正交试验；性能
中图分类号：TU528.042+.2 文献标识码：A 文章编号：1001-702X（2022）12-0122-04
Synthesis and properties of EPEG anti-mud and water-reducing polycarboxylic acid water-reducing agent
PAN Yang1，QI Dongyou2，ZOU Delin3，WANG Yuan1，WANG Zhiyong2，HAO Lulu3，JI Xiankun1，ZHANG Yu2，LIU Hongyin3
（1.Wuhan Sanyuan Special Building Materials Co. Ltd.，Wuhan 430083，China；2.Technical Supervision and Research Center of Building Materials Industry，Beijing 100024，China；3.CNNP Guodian Zhangzhou Energy Co. Ltd.，Zhangzhou 363300，China）
Abstract：Vinyl ethers monomer of EPEG，acrylic acid and mud-resistant monomer are used for ternary copolymer of polycarboxylic acid water reducing agent，seven-factor three-level orthogonal experiment was used to explore the influence of acid-ether ratio，substrate concentration and other factors on the properties of water-reducing agent，and the influence of main chain length and side chain density on anti-sludge water reduction performance was investigated on the basis of orthogonal test for the optimum synthesis process. The test results show that the optimal process was determined as follows：acid-ether ratio 4.5，mercaptopropionic acid dosage 1.8%，sulfonic acid group functional monomer dosage 3.0%，formaldehyde sodium bisulfite dosage 0.18%，base concentration 65%. The results of concrete tests show that the water reducing agent has good anti mud and reinforcement effects in the case of using machine-made sand.
Key words：vinyl ethers monomer of EPEG，polycarboxylic acid water reducing agent，synthesis，anti mud，orthogonal test，performance