Synthesis and Application of Polycarboxylate Superplasticizer with Modified Starch
HE Tingshu1, YANG Renhe1, XU Yilun2, LI Tongxin2, FANG Jiabin1
1 College of Materials and Mineral Resources, Xi'an University of Architecture and Technology, Xi'an 710055; 2 Shaanxi Youbang New Material Technology Co. Ltd., Xi'an 712046;
Abstract: A new type of polycarboxylate superplasticizer (PC2) was synthesized by using the carboxymethyl starch ether (CMS-Na) to replace part of isopentenyl polyoxyethylene ether (TPEG). The best substitute of CMS-Na for TPEG was obtained by single component test of cement paste, which was 15%. In addition, the molecular structure of CMS-Na and polycarboxylate superplasticizer was characterized by infrared spectroscopy (FTIR).The results showed that PC2 not only reduced the cost of raw mate-rials, but also had excellent dispersion and plastic preservation abilities, while do no harm to the compressive strength of concrete.
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2018, Vol. 32 
