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China Surfactant Detergent & Cosmetics ›› 2018, Vol. 48 ›› Issue (1): 27-30.doi: 10.13218/j.cnki.csdc.2018.01.006

• Development and applicatio • Previous Articles     Next Articles

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

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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

CLC Number: 

  • TQ423