吉林大学学报(理学版)

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聚醚类减水剂的合成及性能

王岩1, 任殿福1, 田卫星2, 王宏2, 陈仲2, 韩兆让1   

  1. 1. 吉林大学 化学学院, 长春 130012; 2. 吉林省计算中心, 长春 130012
  • 收稿日期:2012-11-21 出版日期:2013-09-26 发布日期:2013-09-17
  • 通讯作者: 韩兆让 E-mail:hanzr@jlu.edu.cn

Synthesis and Properties of PolyetherBased Superplasticizer

WANG Yan1, REN Dianfu1, TIAN Weixing2, WANG Hong2,CHEN Zhong2, HAN Zhaorang1   

  1. 1. College of Chemistry, Jilin University, Changchun 130012, China;2. Computation Center of Jilin Province, Changchun 130012, China
  • Received:2012-11-21 Online:2013-09-26 Published:2013-09-17
  • Contact: HAN Zhaorang E-mail:hanzr@jlu.edu.cn

摘要:

采用自由基共聚的方法将甲基烯丙基聚氧乙烯醚、 2-丙烯酰胺-2-甲基丙磺酸、 马来酸酐和丙烯酸4种单体合成一系列聚醚类高效减水剂, 并通过红外光谱、 核磁共振氢谱和凝胶渗透色谱(GPC)确认产物结构、 分子量及其分布, 探讨单体配比与合成工艺, 考察减水剂的掺量和温度对水泥净浆流动度及减水率的影响,
 比较该减水剂在不同水泥应用中的适应性. 实验结果表明: 该聚醚类高效减水剂分散性较高, 初始与1 h后净浆流动度分别为310,300 mm, 减水率为35%; 在3种水泥应用中均表现优异.

关键词: 聚氧乙烯醚, 高效减水剂, 合成, 水泥, 流动度, 减水率, 分散性

Abstract:

HPEG/AMPS/MA/AA polyetherbased superplasticizer was synthesized with free radical copolymerization method. Monomer ratio and the synthesis process were discussed. Its structure, molecular weight and distribution were tested by FTIR, 1H NMR and GPC; the effects of the superplasticizer dosage and
 temperature on cement paste fluidity and waterreducing ratio were investigated; and the adaptability of the superplasticizer in different cement application was investigated. This kind of superplasticizer has high dispersion, the initial fluidity of cement paste and that of it left for 1 h could reach 310 and 300 mm respectively, and the waterreducing ratio could reach 35%. The superplasticizer shows excellent properties in compatibility with reference cement, Dinglu cement and Shanlü cement.

Key words: PEO, superplasticizer, synthesis, cement, paste fluidity, waterreducing ratio, dispersion

中图分类号: 

  • O631.5