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改性聚羧酸减水剂的研发与应用
作者：樊伟1，王雪敏1，吴志刚1，2，刘伟1，郭诚2，张孝伍1，2，杨雪超1
（1.天津冶建特种材料有限公司，天津 301914；2.中冶建筑研究院有限公司，北京 100089）
摘要：采用2-萘酚-3，6-二磺酸对异丁烯基聚氧乙烯醚进行改性，然后与丙烯酸共聚合成了一种TC型聚羧酸减水剂，并对其机理进行了分析。试验结果表明：与普通型聚羧酸减水剂相比，TC型聚羧酸减水剂在不降低分散性的基础上，在混凝土体系中具有较好的持久锁水性，可有效弥补普通型聚羧酸减水剂因过掺导致的混凝土离析、泌水等问题，且具有良好的抗泥性。
关键词：2-萘酚-3，6-二磺酸；聚羧酸减水剂；分散性；保水性；抗泥性
中图分类号：TU528.042+.2 文献标识码：A 文章编号：1001-702X（2022）05-0010-03
Development and application of modified polycarboxylic acid water reducer
FAN Wei1，WANG Xuemin1，WU Zhigang1，2，LIU Wei1，GUO Cheng2，ZHANG Xiaowu1，2，YANG Xuechao1
（1.Tianjin Yejian Special Materials Co. Ltd.，Tianjin 301914，China；
2.MCC Architectural Research Institute Co. Ltd.，Beijing 100089，China）
Abstract：Isobutenyl polyoxyethylene ether was modified by 2-naphthol-3，6-disulfonic acid，then a TC type polycarboxylic acid water reducer was copolymerized with acrylic acid，and its mechanism was analyzed. The test results show that compared with the traditional type，on the basis of not reducing the dispersion performance，TC type polycarboxylic acid water reducer has lasting water locking property in the concrete system，which effectively makes up for the problems of concrete segregation and bleeding caused by over mixing of the traditional polycarboxylic acid water reducer. It also has good mud resistant property.
Key words：2-naphthol-3，6-disulfonic acid，polycarboxylic acid water reducer，dispersion，water retention，mud resistance