Page 221 - 《精细化工》2022年第11期

第 39 卷第 11 期 精 细 化 工 Vol.39, No.11
2 022 年 11 月 FINE CHEMICALS Nov. 2022

建筑用化学品
不同磷酸酯单体的 EPEG 型聚羧酸

减水剂的制备及抗泥性能

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解利荣 ，张光华 ，董 勋 ，王 静 ，张 妍 ，邢世强 ，王少武
（1. 陕西科技大学 陕西省轻化工助剂重点实验室，陕西 西安 710021；2. 中交二公局东萌工程有限公
司，陕西 西安 710021）
摘要：以乙二醇单乙烯基聚乙二醇醚（EPEG）为大单体，丙烯酸（AA）为小单体，2-羟乙基甲基丙烯酸酯磷
酸酯（HEMAP）或封端酰胺磷酸酯（CAP）为功能单体，采用水溶液自由基共聚法合成了两种 EPEG 型抗泥型
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聚羧酸减水剂 PCE-EP 1 和 PCE-EP 2 。采用 FTIR、 HNMR 对减水剂结构进行了表征，通过水泥净浆流动度测试
了合成的减水剂对水泥的分散性能以及抗泥性能，并结合 XRD 和 XPS 探究了减水剂与水泥、蒙脱土之间的作
用机理。结果表明，当减水剂的折固掺量为水泥质量 0.2%，蒙脱土替换 2%水泥时，掺 PCE-EP 1 和 PCE-EP 2 的
抗泥性能优于 PCE-E（不加磷酸酯单体的产物）。XRD 结果说明，蒙脱土与减水剂 PCE-EP 1 、PCE-EP 2 不存在插
层吸附，可以一定程度上降低蒙脱土对减水剂的负面影响，从而提高该减水剂对含蒙脱土水泥的分散能力。
关键词：EPEG；聚羧酸减水剂；蒙脱土；分散性；抗泥性；建筑用化学品
中图分类号：TU528.042.2 文献标识码：A 文章编号：1003-5214 (2022) 11-2371-06

Preparation and anti-mud function of EPEG polycarboxylate
superplasticizers with different phosphate monomers

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XIE Lirong , ZHANG Guanghua , DONG Xun , WANG Jing ,
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ZHANG Yan , XING Shiqiang , WANG Shaowu
（1. Shaanxi Provincial Key Laboratory of Light Chemical Additives, Shaanxi University of Science & Technology, Xi'an
710021, Shaanxi, China; 2. Zhongjiao Ergongju Dong Meng Engineering Co., Ltd., Xi'an 710021, Shaanxi, China）
Abstract: Two anti-mud ethylene glycol monovinyl polyethylene glycol ether (EPEG) polycarboxylate
superplasticizers PCE-EP 1 and PCE-EP 2 were synthesized via free radical copolymerization of large
monomer, minor monomer acrylic acid (AA), functional monomers 2-hydroxyethyl methacrylate phosphate
phosphate (HEMAP) or terminated amide phosphate ester (CAP) in aqueous solution, and characterized by
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FTIR and HNMR for structural analysis. The dispersion and anti-mud performance of the synthesized
water-reducing agent added to cement were then tested by the fluidity of cement paste, followed by
exploration on the interaction mechanism between water-reducing agent and cement and montmorillonite
through XRD and XPS. The results showed that when the content of water reducing agent was 0.2% of
cement mass with 2% of cement replaced by montmorillonite, PCE-EP 1 and PCE-EP 2 displayed certain
anti-mud function. Moreover, XRD results showed that there was no intercalation adsorption between
montmorillonite and water-reducing agents PCE-EP 1 and PCE-EP 2, which could reduce the negative
influence of montmorillonite on water-reducing agent to some extent, thus improving the dispersing ability
of the water-reducing agent in cement containing soil.
Key words: EPEG; polycarboxylate superplasticizer; montmorillonite; dispersion; mud resistance; building
chemicals

收稿日期：2022-03-28; 定用日期：2022-06-28; DOI: 10.13550/j.jxhg. 20220279
基金项目：国家自然科学基金项目（31670596）；陕西省科技厅重点研发计划项目（2021CGBX-22）；陕西省教育厅项目（20JC005）
作者简介：解利荣（1997—），女，硕士生，E-mail：200811024@sust.edu.cn。联系人：张光华（1962—），男，教授，E-mail：
zhanggh@sust.edu.cn。