Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-performance viscosity-reducing polycarboxylate superplasticizer and preparation method thereof
The invention belongs to the technical field of concrete admixtures, and particularly relates to a high-performance viscosity-reducing polycarboxylic acid water reducer and a preparation method thereof, and the viscosity-reducing polycarboxylic acid water reducer is prepared through a free radical polymerization reaction of an aqueous solution. The viscosity reduction type polycarboxylate superplasticizer is prepared from the following raw materials: isopentenol polyoxyethylene ether, unsaturated carboxylic acid, an unsaturated functional monomer, a redox initiator, a chain transfer agent and an alkaline solution. The viscosity reduction type polycarboxylate superplasticizer with excellent performance is obtained by adding functional monomers with different acrylate units for structural optimization. The polycarboxylic acid water reducer has a good viscosity reduction effect, improves the workability of concrete, has excellent dispersing performance under the condition of low mixing amount, effectively solves the problem that high-strength concrete is difficult to pump, is low in production cost, simple in preparation process, stable in performance and small in environmental pollution, and well meets the requirements of concrete construction.
本发明属于混凝土外加剂技术领域，具体为一种高性能降粘型聚羧酸减水剂及其制备方法，通过水溶液自由基聚合反应制得该降粘型聚羧酸减水剂。该降粘型聚羧酸减水剂由以下各组分原料制得：异戊烯醇聚氧乙烯醚、不饱和羧酸、不饱和功能单体、氧化还原性引发剂、链转移剂和碱性溶液。通过加入不同的丙烯酸酯基单元的功能单体进行结构优化，得到性能优异的降粘型聚羧酸减水剂。本发明聚羧酸减水剂在低掺量下，具有良好的降粘效果，提高混凝土的和易性及具有优异的分散性能，有效解决高强混凝土难泵送的问题，且聚羧酸减水剂生产成本低，制备工艺简单，性能稳定及环境污染小，较好的满足混凝土施工的要求。
High-performance viscosity-reducing polycarboxylate superplasticizer and preparation method thereof
The invention belongs to the technical field of concrete admixtures, and particularly relates to a high-performance viscosity-reducing polycarboxylic acid water reducer and a preparation method thereof, and the viscosity-reducing polycarboxylic acid water reducer is prepared through a free radical polymerization reaction of an aqueous solution. The viscosity reduction type polycarboxylate superplasticizer is prepared from the following raw materials: isopentenol polyoxyethylene ether, unsaturated carboxylic acid, an unsaturated functional monomer, a redox initiator, a chain transfer agent and an alkaline solution. The viscosity reduction type polycarboxylate superplasticizer with excellent performance is obtained by adding functional monomers with different acrylate units for structural optimization. The polycarboxylic acid water reducer has a good viscosity reduction effect, improves the workability of concrete, has excellent dispersing performance under the condition of low mixing amount, effectively solves the problem that high-strength concrete is difficult to pump, is low in production cost, simple in preparation process, stable in performance and small in environmental pollution, and well meets the requirements of concrete construction.
本发明属于混凝土外加剂技术领域，具体为一种高性能降粘型聚羧酸减水剂及其制备方法，通过水溶液自由基聚合反应制得该降粘型聚羧酸减水剂。该降粘型聚羧酸减水剂由以下各组分原料制得：异戊烯醇聚氧乙烯醚、不饱和羧酸、不饱和功能单体、氧化还原性引发剂、链转移剂和碱性溶液。通过加入不同的丙烯酸酯基单元的功能单体进行结构优化，得到性能优异的降粘型聚羧酸减水剂。本发明聚羧酸减水剂在低掺量下，具有良好的降粘效果，提高混凝土的和易性及具有优异的分散性能，有效解决高强混凝土难泵送的问题，且聚羧酸减水剂生产成本低，制备工艺简单，性能稳定及环境污染小，较好的满足混凝土施工的要求。
High-performance viscosity-reducing polycarboxylate superplasticizer and preparation method thereof
一种高性能降粘型聚羧酸减水剂及其制备方法
DU JIANG (Autor:in) / LIU RUNXIA (Autor:in) / ZHANG YA (Autor:in) / CHEN YUJIE (Autor:in) / CHEN YINGYING (Autor:in) / LI MIN (Autor:in) / TANG BIAO (Autor:in) / LI ZIWEI (Autor:in)
11.08.2023
Patent
Elektronische Ressource
Chinesisch
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