Open AccessSynthesis of the VPEG Polycarboxylate Superplasticizer with Controllable Activity and Its Properties
Author(s) -
Wenhong Chen,
Lei Deng,
Yu Jiang,
Jianmei Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/647/1/012064
Subject(s) - superplasticizer , acrylic acid , ether , raw material , chemical engineering , mass transfer , fumaric acid , chemistry , polymer chemistry , materials science , organic chemistry , copolymer , composite material , chromatography , polymer , compressive strength , engineering
This paper focuses on the synthesis of a kind of VPEG polycarboxylate superplasticizer with controllable activity with 4-hydroxybutyl vinyl polyoxyethylene ether (VPEG), acrylic acid (AA) and fumaric acid (FMA) as the main raw materials. Through the experimental results, it can be found that the optimum process conditions are as follows: the water-reducing admixture has ideal fluidity and workability in concrete, with the temperature of 20°C, the reaction system concentration of 40%, the mass ratio of acid to ether of 9.2%, and the initiator and the chain-transfer agent respectively accounting 0.3% and 0.09% of the total mass.