Preparation and performance test of water-reducing mother liquor of C6 polycarboxylate at room temperature

Wenhong Chen; Lei Deng; Yu Jiang; Jianmei Li

doi:10.1117/12.2639066

29 April 2022 Preparation and performance test of water-reducing mother liquor of C6 polycarboxylate at room temperature

Wenhong Chen, Lei Deng, Yu Jiang, Jianmei Li

Author Affiliations +

Proceedings Volume 12255, 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022); 122552O (2022) https://doi.org/10.1117/12.2639066
Event: 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022), 2022, Chongqing, China

Abstract

The molecular structure of water-reducing mother liquor of C6 polycarboxylate was redesigned by oxidation-reduction reaction. A water-reducing mother liquor of C6 polycarboxylate was synthesized at room temperature with vinyl-terminated polyoxyethylene ether (EPEG), acrylic acid (AA) and self-made phosphate ester (KAP) as main raw materials under the action of initiator. The structural characteristics and molecular weight of C6 polycarboxylate mother liquor were analyzed by infrared spectroscopy (FTIR) and gel permeation chromatography (GPC). The influence of C6 normal temperature water-reducing mother liquor prepared at different temperature, polyether molecular weight and acid-ether ratio on the fluidity of cement paste was studied, and the concrete performance was tested. The results show that: The reaction temperature is 30℃, the mass ratio of acid to ether is 8.9%, and the fluidity, concrete dispersibility and dispersion retention of the cement paste with vinyl-terminated polyoxyethylene ether (EPEG) of 3000 weight average molecular weight are the best.

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Wenhong Chen, Lei Deng, Yu Jiang, and Jianmei Li "Preparation and performance test of water-reducing mother liquor of C6 polycarboxylate at room temperature", Proc. SPIE 12255, 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022), 122552O (29 April 2022); https://doi.org/10.1117/12.2639066

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