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日用化学工业 ›› 2018, Vol. 48 ›› Issue (1): 27-30.doi: 10.13218/j.cnki.csdc.2018.01.006

• 开发与应用 • 上一篇    下一篇

一种新型保坍型聚羧酸减水剂的合成及其应用性能研究

郭国龙1, 裴继凯1,2, 王自为1,2, 任建国1,2, 武恩瑞3   

  1. 1.山西大学 化学与化工学院,山西 太原 030006;
    2.山西大学 混凝土外加剂技术研究中心,山西 太原 030006;
    3.山西山大合盛新材料股份有限公司,山西 太原 030006
  • 收稿日期:2017-10-12 发布日期:2019-03-21
  • 通讯作者: 王自为,教授,电话:(0351)7675113,E-mail:wzhiwei@sxu.edu.cn。
  • 作者简介:郭国龙(1988-),男,山西忻州人,硕士研究生,电话:13613463213,E-mail:hsbtggl@163.com。
  • 基金资助:
    山西山大合盛新材料股份有限公司与山西大学合作项目

Synthesis and application of a new slump retarding polycarboxylate superplasticizer

GUO Guo-long1, PEI Ji-kai1,2, WANG Zi-wei1,2, REN Jian-guo1,2, WU En-rui3   

  1. 1.School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan,Shanxi 030006,China;
    2.Technical Research Centre of Concrete Admixtures,Shanxi University,Taiyuan,Shanxi 030006,China;
    3.Shanxi Shan Da He Sheng New Material Co.,Ltd.,Taiyuan,Shanxi 030006,China
  • Received:2017-10-12 Published:2019-03-21

摘要: 以甲基烯丙基聚氧乙烯醚(TPEG)、丙烯酸(AA)和聚甘油丙烯酸酯(PA)为共聚单体,在维生素C(VC)、过氧化氢(H2O2)和链转移剂巯基乙酸(TGA)作用下,合成了新型保坍型聚羧酸减水剂HS-JG,利用凝胶色谱和红外光谱对产物的结构进行表征,并对其应用性能进行研究。结果表明,在n(AA)∶n(PA)∶n(TPEG)=2∶0.15∶1,VC、H2O2和TGA用量分别为TPEG质量的0.5%,1.4%和0.5%,反应温度50 ℃,反应时间3 h的条件下合成的HS-JG对水泥有较好的适应性,对水泥净浆以及混凝土坍落度有较好的保持能力。

关键词: 聚羧酸减水剂, 聚甘油丙烯酸酯, 坍落度保持

Abstract: Taking polyoxyethylene allyl methyl ether (TPEG),acrylic acid (AA) and polyglycerol acrylate (PA) as comonomer,under the action of vitamin C (VC),hydrogen peroxide (H2O2) and chain transfer agent thioglycolic acid (TGA),a new slump retarding superplasticizer HS-JG was synthesized.The structure of the product was characterized by using gel chromatography and infrared spectrum,and the study on its application performance was carried out.Results show that when n(AA)∶n(PA)∶n(TPEG)=2∶0.15∶1, the content of VC,H2O2 and TGA is 0.5%,1.4% and 0.5% of the mass of TPEG respectively,the reaction temperature is 50 ℃,and the reaction time is 3 h,the synthesized product HS-JG has good adaptability to cement.The slump retarding property is better in ability to maintain for cement paste and concrete.

Key words: polycarboxylate superplasticizer, polyglycerol acrylate, slump retention

中图分类号: 

  • TQ423