Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method and application of long-acting slump-retaining water reducing agent
The invention discloses a preparation method and application of a long-acting slump-retaining water reducing agent. The preparation method specifically comprises the following steps: S1, preparing raw materials; s2, esterification reaction; s3, carrying out phosphorylation reaction; s4, preparing a dripping material; s5, polymerization reaction. The water reducer is applied to concrete slump retaining, concrete slump loss improvement, segregation and bleeding. According to the invention, a long side chain of a phosphate group is introduced through phosphorylated isopentenol polyoxyethylene ether, and short side chains of functional sodium vinylsulfonate, acrylamide and hydroxypropyl acrylate are introduced, so that the mud-resistant low-slump-loss polycarboxylic acid water reducer is synthesized; the phosphoric acid group, the sulfonic acid group and the acrylamide are introduced, so that the adsorption effect of high-valence metal ions in soil on the polycarboxylic acid type water reducing agent can be reduced, and the strength of hardened concrete can be improved; and the hydroxypropyl acrylate is introduced, so that the slump retaining effect can be remarkably improved.
本发明公开了一种长效保坍减水剂的制备方法与应用，具体包括以下步骤：S1、原料准备；S2、酯化反应；S3、磷酸化反应；S4、滴加料的制备；S5、聚合反应，所述减水剂在混凝土保坍，改善混凝土坍落度损失、离析、泌水中的应用。本申请通过磷酸化异戊烯醇聚氧乙烯醚引入磷酸基团的长侧链及引入功能型乙烯基磺酸钠、丙烯酰胺和丙烯酸羟丙酯短侧链,合成抗泥型低坍损聚羧酸系减水剂，引入磷酸基团﹑磺酸基和丙烯酰胺可降低泥土中的高价金属离子对聚羧酸系减水剂的吸附作用及提高硬化混凝土强度引入丙烯酸羟丙酯能显著改善保坍效果。
Preparation method and application of long-acting slump-retaining water reducing agent
The invention discloses a preparation method and application of a long-acting slump-retaining water reducing agent. The preparation method specifically comprises the following steps: S1, preparing raw materials; s2, esterification reaction; s3, carrying out phosphorylation reaction; s4, preparing a dripping material; s5, polymerization reaction. The water reducer is applied to concrete slump retaining, concrete slump loss improvement, segregation and bleeding. According to the invention, a long side chain of a phosphate group is introduced through phosphorylated isopentenol polyoxyethylene ether, and short side chains of functional sodium vinylsulfonate, acrylamide and hydroxypropyl acrylate are introduced, so that the mud-resistant low-slump-loss polycarboxylic acid water reducer is synthesized; the phosphoric acid group, the sulfonic acid group and the acrylamide are introduced, so that the adsorption effect of high-valence metal ions in soil on the polycarboxylic acid type water reducing agent can be reduced, and the strength of hardened concrete can be improved; and the hydroxypropyl acrylate is introduced, so that the slump retaining effect can be remarkably improved.
本发明公开了一种长效保坍减水剂的制备方法与应用，具体包括以下步骤：S1、原料准备；S2、酯化反应；S3、磷酸化反应；S4、滴加料的制备；S5、聚合反应，所述减水剂在混凝土保坍，改善混凝土坍落度损失、离析、泌水中的应用。本申请通过磷酸化异戊烯醇聚氧乙烯醚引入磷酸基团的长侧链及引入功能型乙烯基磺酸钠、丙烯酰胺和丙烯酸羟丙酯短侧链,合成抗泥型低坍损聚羧酸系减水剂，引入磷酸基团﹑磺酸基和丙烯酰胺可降低泥土中的高价金属离子对聚羧酸系减水剂的吸附作用及提高硬化混凝土强度引入丙烯酸羟丙酯能显著改善保坍效果。
Preparation method and application of long-acting slump-retaining water reducing agent
一种长效保坍减水剂的制备方法与应用
HUANG LIJUN (Autor:in) / MENG XIANGRUI (Autor:in) / ZHANG SHIQI (Autor:in) / ZHAO XICHEN (Autor:in) / TANG QIANG (Autor:in) / ZHENG QIAN (Autor:in) / ZHU HAITAO (Autor:in)
31.03.2023
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024
SLUMP-RETAINING WATER-REDUCING AGENT AND PREPARATION METHOD THEREFOR
| Europäisches Patentamt | 2024
Slump-retaining water reducing agent and preparation method thereof
| Europäisches Patentamt | 2024
Slump-retaining water reducing agent mother liquor and preparation method thereof
| Europäisches Patentamt | 2024