Page 208 - 《精细化工》2020年第1期

·194· 精细化工 FINE CHEMICALS 第 37 卷

净浆流动度实验表明，端羟基双子季铵盐以同掺和
先掺的复配方式均可以显著提高含 3%蒙脱土水泥
浆体的流动度且复配稳定性较好。XRD、XPS 和 Zeta
电位实验表明，端羟基双子季铵盐可以通过静电引
力和氢键作用优先吸附在蒙脱土的表面和层间，减
少蒙脱土对 PCE 的吸附，使得体系中更多的减水剂
作用于水泥，保证 PCE 分散特性，起到抗泥作用。
PCE 复配端羟基双子季铵盐可改善蒙脱土对 PCE 的
负面影响，为改善蒙脱土对 PCE 的负面影响提供了

新的研究思路，具有广阔的应用前景。
图 9 减水剂浓度对水泥和蒙脱土表面 Zeta 电位的影响
Fig. 9 Effect of superplasticizers concentration on the Zeta 参考文献：
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