Open AccessStudy on Synthesis and Performance of Low-bleeding Polycarboxylate Superplasticizer
Author(s) -
Guangxing Lai,
Jinwei Yin,
Fang Yunhui,
Lai Shuyi
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1676/1/012051
Subject(s) - superplasticizer , macromonomer , fourier transform infrared spectroscopy , monomer , materials science , gel permeation chromatography , ether , water reducer , polymer , polymer chemistry , chemical engineering , chemistry , composite material , organic chemistry , fly ash , compressive strength , engineering
A low-bleeding polycarboxylate superplasticizer was synthesized by using 4-hydroxybutyl vinyl polyoxyethylene ether (VPEG) as the macromonomer and unsaturated polyhydroxy compound (BD) as the functional monomer. The synthesis conditions were optimized by single factor method. The structure of the polymer was characterized by infrared spectroscopy (FTIR) and gel permeation chromatography (GPC), and the properties of the synthesized samples were examined using paste, mortar and concrete. The results showed that when the BD content was 2.0%, the polycarboxylate superplasticizer PCE-HR had better comprehensive properties. Compared with the standard polycarboxylate superplasticizer PCE-S, PCE-HR had excellent performance in water retention, slump protection and reinforcement.