| 摘要: |
| 在传统丙烯酸异戊烯基聚氧乙烯醚（AA TPEG）聚羧酸减水剂（PCE）基础上引入2 丙烯酰胺 2 甲基丙烯磺酸（AMPS）单体，合成了AA TPEG AMPS聚羧酸减水剂（ATS），研究了其在水泥蒙脱土浆体系统中的分散性.结果表明：ATS减水剂在蒙脱土上的吸附行为与PCE无明显差别，但在水泥颗粒上的吸附量较小，吸附层厚度较大，能显著降低水泥颗粒表面的Zeta电位，对水泥蒙脱土浆体系统仍具有较好的分散性及分散保持性，降低了聚羧酸减水剂对蒙脱土的敏感性. |
| 关键词: 聚羧酸减水剂 2 丙烯酰胺 2 甲基丙烯磺酸 蒙脱土 吸附 分散 |
| DOI：103969/j.issn.1007 9629201801003 |
| 分类号: |
| 基金项目:广东省科技计划项目（2015A030401060，2016A040403042）；广东省交通运输厅科技项目（科技 2015 02 043，科技 2017 02 035） |
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| Effect of Polycarboxylate Superplasticizers Containing AMPS on Clay Sensitivity |
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WU Xiaomei, NIU Xiangyuan, GAO Qiang, FAN Yueming
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School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
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| Abstract: |
| AA TPEG AMPS polycarboxylate superplasticizer(ATS) was synthesized by introducing 2 acrylamide 2 methacrylic acid(AMPS) into the structure of traditional AA TPEG polycarboxylate(PCE). A study including adsorption and XRD experiments revealed that the adsorption of ATS on montmorillonite did not differ much from PCE. The adsorption capacity of ATS on the cement particles is less than that of PCE. However, the adsorption layer thickness and the absolute value of the zeta potential of ATS are larger than that of PCE. Therefore, ATS exhibites a good dispersion property in cement clay system. |
| Key words: polycarboxylate superplasticizer 2 acrylamide 2 methacrylic acid(AMPS) montmorillonite adsorption dispersion |
