Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
POLYMER HAVING DISPERSING FUNCTION, POLYCARBOXYLIC ACID CEMENT DISPERSANT, PREPARATION METHOD THEREFOR AND USE THEREOF
The present disclosure provides a polymer having a dispersing function, a preparation method therefor and use thereof as a cement dispersant. The polymer comprises a structural unit (a), a structural unit (b) and a structural unit (c); wherein the structural unit (a) is provided by an unsaturated polyether, the structural unit (b) is provided by an unsaturated acid and/or a salt thereof and/or an anhydride thereof, and the structural unit (c) is provided by a silane and/or siloxane comprising a polymerizable group and having no less than five carbon atoms; the molar ratio of the structural unit (a), the structural unit (b) and the structural unit (c) is 1: (1-20): (0.01-0.5); and the polymer has a weight average molecular weight of 20,000-90,000g/mol. Compared with the prior art, the polymer and the dispersant provided by the present disclosure can significantly reduce the retarding property of polycarboxylic acid, especially completely do not have the retarding property at a high temperature of higher than 120°C, while maintaining a higher dispersibility when a higher amount of acid is used. In addition, the dispersant provided by the present disclosure is compatible with other additional additives.
POLYMER HAVING DISPERSING FUNCTION, POLYCARBOXYLIC ACID CEMENT DISPERSANT, PREPARATION METHOD THEREFOR AND USE THEREOF
The present disclosure provides a polymer having a dispersing function, a preparation method therefor and use thereof as a cement dispersant. The polymer comprises a structural unit (a), a structural unit (b) and a structural unit (c); wherein the structural unit (a) is provided by an unsaturated polyether, the structural unit (b) is provided by an unsaturated acid and/or a salt thereof and/or an anhydride thereof, and the structural unit (c) is provided by a silane and/or siloxane comprising a polymerizable group and having no less than five carbon atoms; the molar ratio of the structural unit (a), the structural unit (b) and the structural unit (c) is 1: (1-20): (0.01-0.5); and the polymer has a weight average molecular weight of 20,000-90,000g/mol. Compared with the prior art, the polymer and the dispersant provided by the present disclosure can significantly reduce the retarding property of polycarboxylic acid, especially completely do not have the retarding property at a high temperature of higher than 120°C, while maintaining a higher dispersibility when a higher amount of acid is used. In addition, the dispersant provided by the present disclosure is compatible with other additional additives.
POLYMER HAVING DISPERSING FUNCTION, POLYCARBOXYLIC ACID CEMENT DISPERSANT, PREPARATION METHOD THEREFOR AND USE THEREOF
POLYMER MIT DISPERGIERFUNKTION, POLYCARBONSÄUREZEMENTDISPERGIERMITTEL, HERSTELLUNGSVERFAHREN DAFÜR UND VERWENDUNG DAVON
POLYMÈRE PRÉSENTANT UNE FONCTION DE DISPERSION, DISPERSANT DE CIMENT D'ACIDE POLYCARBOXYLIQUE, PROCÉDÉ DE PRÉPARATION ASSOCIÉ ET UTILISATION CORRESPONDANTE
MIAO XIA (Autor:in) / ZHOU SHIMING (Autor:in) / WEI HAOGUANG (Autor:in) / YANG GUANGGUO (Autor:in) / WANG LISHUANG (Autor:in) / WANG QICHUN (Autor:in) / WANG MU (Autor:in) / WANG XIAOJING (Autor:in) / ZENG MIN (Autor:in) / LIU JIAN (Autor:in)
27.03.2024
Patent
Elektronische Ressource
Englisch
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