Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Viscosity-reducing shrinkage-reducing polycarboxylic acid water reducer and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to a viscosity reduction and shrinkage reduction type polycarboxylic acid water reducer and a preparation method thereof. The viscosity reduction and shrinkage reduction type polycarboxylic acid water reducer is prepared by copolymerizing an unsaturated polyether monomer, unsaturated acid, a crosslinking monomer, unsaturated sulfonate and an esterification product, the esterification product is prepared by carrying out esterification reaction on gallic acid and hydroxyl vinyl ether. The viscosity reduction and shrinkage reduction type polycarboxylic acid water reducer can effectively reduce the viscosity of high-grade concrete, reduce the later shrinkage of the concrete and improve the construction efficiency of the concrete and the durability of a concrete structure.
本发明涉及混凝土外加剂技术领域，特别涉及一种降粘减缩型聚羧酸减水剂及其制备方法。该降粘减缩型聚羧酸减水剂由不饱和聚醚单体、不饱和酸、交联单体、不饱和磺酸盐和酯化产物共聚制得；所述酯化产物由没食子酸与羟基乙烯基醚经酯化反应制得。该降粘减缩型聚羧酸减水剂可有效降低高标号混凝土粘度，同时减小混凝土后期收缩，提高混凝土施工效率及混凝土结构物耐久性。
Viscosity-reducing shrinkage-reducing polycarboxylic acid water reducer and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to a viscosity reduction and shrinkage reduction type polycarboxylic acid water reducer and a preparation method thereof. The viscosity reduction and shrinkage reduction type polycarboxylic acid water reducer is prepared by copolymerizing an unsaturated polyether monomer, unsaturated acid, a crosslinking monomer, unsaturated sulfonate and an esterification product, the esterification product is prepared by carrying out esterification reaction on gallic acid and hydroxyl vinyl ether. The viscosity reduction and shrinkage reduction type polycarboxylic acid water reducer can effectively reduce the viscosity of high-grade concrete, reduce the later shrinkage of the concrete and improve the construction efficiency of the concrete and the durability of a concrete structure.
本发明涉及混凝土外加剂技术领域，特别涉及一种降粘减缩型聚羧酸减水剂及其制备方法。该降粘减缩型聚羧酸减水剂由不饱和聚醚单体、不饱和酸、交联单体、不饱和磺酸盐和酯化产物共聚制得；所述酯化产物由没食子酸与羟基乙烯基醚经酯化反应制得。该降粘减缩型聚羧酸减水剂可有效降低高标号混凝土粘度，同时减小混凝土后期收缩，提高混凝土施工效率及混凝土结构物耐久性。
Viscosity-reducing shrinkage-reducing polycarboxylic acid water reducer and preparation method thereof
一种降粘减缩型聚羧酸减水剂及其制备方法
LIU BOBO (Autor:in) / AN XIAOQIANG (Autor:in) / MIAO DONGHUI (Autor:in) / HE CHONG (Autor:in) / CHEN CHANGJUN (Autor:in)
01.03.2022
Patent
Elektronische Ressource
Chinesisch
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