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| 酯类聚羧酸系减水剂的合成与性能研究 | |
| 引用本文： | 周科利,冯中军,傅乐峰,郑柏存,邓最亮,孔凡桃.酯类聚羧酸系减水剂的合成与性能研究[J].新型建筑材料,2012(2):34-37,41. |
| 作者姓名： | 周科利 冯中军 傅乐峰 郑柏存 邓最亮 孔凡桃 |
| 作者单位： | 1. 上海三瑞高分子材料有限公司,上海,200232 2. 上海三瑞高分子材料有限公司,上海200232;上海三瑞化学有限公司,上海200232 3. 上海三瑞化学有限公司,上海,200232 |
| 基金项目： | 上海市科技启明星计划项目，国家科技部创新基金 |
| 摘 要： | 采用酯化工艺合成了一种含聚醚长链的聚乙二醇单甲醚单甲基丙烯酸酯(MPEGMAA),以此大单体和丙烯酸(AA)、甲基丙烯酸(MAA)、丙基磺酸钠(SAS)、马来酸酐(MAn)等进行自由基聚合,合成了酯类聚羧酸系减水剂.并确定了合成该类减水剂的最佳配比为:n(AA):n(MAA):n(MPEG600MAA):n(MAn):n(SAS)=10.5:3.5:7.0:2.0:7.0,引发剂过硫酸铵用量为1.0％.当减水剂掺量为0.25％时,水泥净浆初始流动度为345mm,120min内水泥净浆流动度基本无损失. |
| 关 键 词： | 酯类大单体 聚羧酸系减水剂 流动度 电位 |
The research on the synthesis and performance of ester type polycarboxylic superplasticizer |
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| ZHOU Keli , FENG Zhongjun , FU Lefeng , ZHENG Baicun , DENG Zuiliang , KONG Fantao.The research on the synthesis and performance of ester type polycarboxylic superplasticizer[J].New Building Materials,2012(2):34-37,41. | |
| Authors: | ZHOU Keli FENG Zhongjun FU Lefeng ZHENG Baicun DENG Zuiliang KONG Fantao |
| Affiliation: | 1(1.Shanghai Sunrise Polymer Material Co.Ltd.,Shanghai 200232,China; 2.Shanghai Sunrise Chemical Co.Ltd.,Shanghai 200232,China) |
| Abstract: | A methoxyl polyethylene glycol ether methyl acrylate(MPEGMAA) was synthesized by using an esterification reaction technique.The novel polycarboxylic superplasticizers were prepared by copolymerizing of MPEGMAA,acrylic acid(AA),α-methylacrylic acid(MAA),sodium alkyl sulfonate(SAS),and maleic anhydride(MAn).The optimum parameter of synthesizing this type of polycarboxylic superplasticizer was n(AA)∶n(MAA)∶n(MPEG600MAA)∶n(MAn)∶n(SAS)=10.5∶3.5∶7.0∶2.0∶7.0,the dosage of initiator was 1.0%.At its usage of 0.25wt%,the fluidity of cement grout can attain 345 mm and there was no loss within 120 minutes. |
| Keywords: | ester macromonomer polycarboxylic superplasticizer fluidity ζ potential |
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