Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mud-resistant polycarboxylic acid slump-retaining water reducing agent and preparation method thereof
The invention discloses a mud-resistant polycarboxylic acid slump-retaining water reducing agent, which is prepared from the following components in parts by weight: 300 to 340 parts of isopentenol polyoxyethylene ether, 10 to 30 parts of dimethyl diallyl ammonium chloride, 2 to 4 parts of an initiator, 20 to 40 parts of hydroxyethyl acrylate, 15 to 30 parts of 2-hydroxyethyl methacrylate phosphate, 3 to 5 parts of sodium alpha-allylsulfonate, 0.6 to 1.2 parts of a reducing agent, 0.4 to 1.0 part of a chain transfer agent, and 250 to 300 parts of deionized water. The preparation method comprises the following steps: mixing deionized water, isopentenol polyoxyethylene ether and dimethyl diallyl ammonium chloride, and then adding an initiator to obtain a mixed solution; and respectively dropwise adding a solution A and a solution B, and adding liquid caustic soda to adjust the pH value. Compared with the traditional slump retaining agent, the product provided by the invention has a certain water-reducing rate, does not influence the setting time and mechanical properties of concrete, and has good adaptability under the condition of high clay content; and the synthesis process is simple, and has the advantages of energy conservation and consumption reduction.
本发明公开了一种抗泥型聚羧酸酸保坍减水剂，包括：异戊烯醇聚氧乙烯醚300‑340份、二甲基二烯丙基氯化铵10‑30份、引发剂2‑4份、丙烯酸羟乙酯20‑40份、2‑羟乙基甲基丙烯酸酯磷酸酯15‑30份、甲级丙烯磺酸钠3‑5份、还原剂0.6‑1.2份和链转移剂0.4‑1.0份，去离子水250‑300份。将去离子水、异戊烯醇聚氧乙烯醚、二甲基二烯丙基氯化铵混合再加入引发剂得到混合液；再分别滴加A液、B液，加入液碱调节pH。本发明的产品与传统保坍剂相比，具有一定的减水率，不影响混凝土凝结时间及力学性能，在高黏土含量的情况下适应性好；合成工艺简单，具有节能降耗的优点。
Mud-resistant polycarboxylic acid slump-retaining water reducing agent and preparation method thereof
The invention discloses a mud-resistant polycarboxylic acid slump-retaining water reducing agent, which is prepared from the following components in parts by weight: 300 to 340 parts of isopentenol polyoxyethylene ether, 10 to 30 parts of dimethyl diallyl ammonium chloride, 2 to 4 parts of an initiator, 20 to 40 parts of hydroxyethyl acrylate, 15 to 30 parts of 2-hydroxyethyl methacrylate phosphate, 3 to 5 parts of sodium alpha-allylsulfonate, 0.6 to 1.2 parts of a reducing agent, 0.4 to 1.0 part of a chain transfer agent, and 250 to 300 parts of deionized water. The preparation method comprises the following steps: mixing deionized water, isopentenol polyoxyethylene ether and dimethyl diallyl ammonium chloride, and then adding an initiator to obtain a mixed solution; and respectively dropwise adding a solution A and a solution B, and adding liquid caustic soda to adjust the pH value. Compared with the traditional slump retaining agent, the product provided by the invention has a certain water-reducing rate, does not influence the setting time and mechanical properties of concrete, and has good adaptability under the condition of high clay content; and the synthesis process is simple, and has the advantages of energy conservation and consumption reduction.
本发明公开了一种抗泥型聚羧酸酸保坍减水剂，包括：异戊烯醇聚氧乙烯醚300‑340份、二甲基二烯丙基氯化铵10‑30份、引发剂2‑4份、丙烯酸羟乙酯20‑40份、2‑羟乙基甲基丙烯酸酯磷酸酯15‑30份、甲级丙烯磺酸钠3‑5份、还原剂0.6‑1.2份和链转移剂0.4‑1.0份，去离子水250‑300份。将去离子水、异戊烯醇聚氧乙烯醚、二甲基二烯丙基氯化铵混合再加入引发剂得到混合液；再分别滴加A液、B液，加入液碱调节pH。本发明的产品与传统保坍剂相比，具有一定的减水率，不影响混凝土凝结时间及力学性能，在高黏土含量的情况下适应性好；合成工艺简单，具有节能降耗的优点。
Mud-resistant polycarboxylic acid slump-retaining water reducing agent and preparation method thereof
一种抗泥型聚羧酸酸保坍减水剂及其制备方法
SUN XIGANG (Autor:in) / LI QIANG (Autor:in) / TAO ZHENGLIANG (Autor:in) / ZHANG JINZHUO (Autor:in) / SUI SHANYUN (Autor:in)
15.06.2021
Patent
Elektronische Ressource
Chinesisch
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