A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-water-reduction polycarboxylic acid slump retaining agent and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to a high-water-reduction polycarboxylic acid slump retaining agent and a preparation method thereof. The high-water-reduction polycarboxylic acid slump retaining agent is synthesized by copolymerizing an unsaturated polyether macromonomer, unsaturated carboxylic acid, unsaturated carboxylic ester and a retarder; the water-based adhesive comprises the following raw material components in parts by weight: 700-800 parts of an unsaturated polyether macromonomer, 15-20 parts of unsaturated carboxylic acid, 40-50 parts of unsaturated carboxylic ester, 1-3 parts of a chain transfer agent, 2-5 parts of an initiator, 0.5-1.5 parts of a reducing agent, 10-20 parts of a retarder, 5-10 parts of a pH regulator and 150-300 parts of water. The high-water-reducing polycarboxylic acid slump retaining agent provided by the invention has good dispersing performance, slump retaining effect and water reducing efficiency, and has the excellent characteristics of low mixing amount, high water reducing rate, high slump retaining performance and the like when being applied to concrete.
本发明涉及混凝土外加剂技术领域，特别涉及一种高减水聚羧酸保坍剂及其制备方法。该高减水聚羧酸保坍剂采用不饱和聚醚大单体、不饱和羧酸、不饱和羧酸酯、缓凝剂共聚合成；按重量份计，其原料组分包括：不饱和聚醚大单体700～800份、不饱和羧酸15～20份、不饱和羧酸酯40～50份、链转移剂1～3份、引发剂2～5份、还原剂0.5～1.5份、缓凝剂10～20份、pH调节剂5～10份、水150～300份。本发明提供的高减水聚羧酸保坍剂具有良好的分散性能、保坍效果和减水效率，其应用于混凝土中，具有具有低掺量、高减水率、高保坍性能等优异特性。
High-water-reduction polycarboxylic acid slump retaining agent and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to a high-water-reduction polycarboxylic acid slump retaining agent and a preparation method thereof. The high-water-reduction polycarboxylic acid slump retaining agent is synthesized by copolymerizing an unsaturated polyether macromonomer, unsaturated carboxylic acid, unsaturated carboxylic ester and a retarder; the water-based adhesive comprises the following raw material components in parts by weight: 700-800 parts of an unsaturated polyether macromonomer, 15-20 parts of unsaturated carboxylic acid, 40-50 parts of unsaturated carboxylic ester, 1-3 parts of a chain transfer agent, 2-5 parts of an initiator, 0.5-1.5 parts of a reducing agent, 10-20 parts of a retarder, 5-10 parts of a pH regulator and 150-300 parts of water. The high-water-reducing polycarboxylic acid slump retaining agent provided by the invention has good dispersing performance, slump retaining effect and water reducing efficiency, and has the excellent characteristics of low mixing amount, high water reducing rate, high slump retaining performance and the like when being applied to concrete.
本发明涉及混凝土外加剂技术领域，特别涉及一种高减水聚羧酸保坍剂及其制备方法。该高减水聚羧酸保坍剂采用不饱和聚醚大单体、不饱和羧酸、不饱和羧酸酯、缓凝剂共聚合成；按重量份计，其原料组分包括：不饱和聚醚大单体700～800份、不饱和羧酸15～20份、不饱和羧酸酯40～50份、链转移剂1～3份、引发剂2～5份、还原剂0.5～1.5份、缓凝剂10～20份、pH调节剂5～10份、水150～300份。本发明提供的高减水聚羧酸保坍剂具有良好的分散性能、保坍效果和减水效率，其应用于混凝土中，具有具有低掺量、高减水率、高保坍性能等优异特性。
High-water-reduction polycarboxylic acid slump retaining agent and preparation method thereof
一种高减水聚羧酸保坍剂及其制备方法
YANG XIANXIAN (author) / CHEN XIAOBIN (author) / XIONG QIUMIN (author) / QIU NIANLI (author) / BARATTI GURIKEZI (author) / KWOK SAU KUEN CONNIE (author)
2024-01-09
Patent
Electronic Resource
Chinese
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