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首页> 外文期刊>Asian Journal of Chemistry: An International Quarterly Research Journal of Chemistry >Synthesis of A Novel Polycarboxylate Superplasticizer with High Performance
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Synthesis of A Novel Polycarboxylate Superplasticizer with High Performance

机译：新型高性能聚羧酸高效减水剂的合成

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摘要

The novel polycarboxylate superplasticizers (NPCS) were prepared by copolymerizing of novel maleic anhydride citric acid ester (MACA), methoxyl polyethylene glycol ether methyl acrylate (MPEGMAA), acrylic acid (AA), α-methylaerylic acid (MAA), sodium alkyl sulfonate (SAS). The structure and properties of novel polycarboxylate superplasticizers were characterized by FTIR, intrinsic viscosity and surface tension. Moreover, the application properties of the fluidity, zeta potential and drying shrinkage of adding novel polycarboxylate superplasticizers into cement paste were also investigated. The results showed that the fluidity of cement grout reached as high as 360 mm at the copolymer usage of 0.25 wt %, water-cement ratio of 0.29. No obvious loss of fluidity occurred within 2 h and the cement paste without bleeding and segregation was homogeneous, In addition, the novel polycarboxylate superplasticizer is good for reducing the drying shrinking, improving the mesoporous volume and making cement hardenite more compact by proved from N2 adsorption and desorption measurement.
机译：通过将新型马来酸酐柠檬酸酯（MACA），甲氧基聚乙二醇醚丙烯酸甲酯（MPEGMAA），丙烯酸（AA），α-甲基丙烯醛酸（MAA），烷基磺酸钠（ SAS）。通过FTIR，特性粘度和表面张力表征了新型聚羧酸类高效减水剂的结构和性能。此外，还研究了在水泥浆中添加新型聚羧酸类高效减水剂的流动性，ζ电位和干燥收缩率的应用性能。结果表明，在共聚物用量为0.25 wt％，水灰比为0.29的情况下，水泥浆的流动性高达360 mm。在2 h内没有出现明显的流动性损失，水泥浆体没有渗出和偏析现象是均匀的，另外，新型的聚羧酸系高效减水剂具有减少干燥收缩，改善中孔体积和使水泥硬化剂更致密的优点。和解吸测量。

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