Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Composite polycarboxylic acid water reducer and preparation method thereof
The invention provides a composite polycarboxylic acid water reducing agent and a preparation method thereof, and belongs to the technical field of water reducing agents. The composite polycarboxylic acid water reducer is prepared from the following raw materials in parts by weight: 40 to 60 parts of quaternary ammonium salt long-chain monomer, 15 to 25 parts of methacrylic acid monomer, 20 to 30 parts of maleic anhydride monomer, 1 to 3 parts of vitamin C and 3 to 7 parts of retarder. The structure of the quaternary ammonium salt long-chain monomer is shown in the specification, and n is equal to 8-20. The prepared composite polycarboxylic acid water reducer has good early strength, slump retaining and retarding effects, can obviously improve the performance of cement, is high in water reducing rate and low in sensitivity, has excellent adaptability to different cement, fly ash, concrete soil content, temperature and water consumption, and has a remarkable application prospect.
本发明提出了一种复合型聚羧酸减水剂及其制备方法，属于减水剂技术领域。复合型聚羧酸减水剂，包括以下重量份的原料：季铵盐长链单体40‑60份、甲基丙烯酸单体15‑25份、马来酸酐单体20‑30份、维生素C1‑3份、缓凝剂3‑7份；所述季铵盐长链单体的结构如下，其中，n=8‑20。本发明制得的复合聚羧酸减水剂具有良好的早强、保坍以及缓凝效果，能明显提高水泥的性能，减水率高，敏感性低，对于不同的水泥、粉煤灰、混凝土含土量、温度及用水量都有着优异的适应性，具有显著的应用前景。
Composite polycarboxylic acid water reducer and preparation method thereof
The invention provides a composite polycarboxylic acid water reducing agent and a preparation method thereof, and belongs to the technical field of water reducing agents. The composite polycarboxylic acid water reducer is prepared from the following raw materials in parts by weight: 40 to 60 parts of quaternary ammonium salt long-chain monomer, 15 to 25 parts of methacrylic acid monomer, 20 to 30 parts of maleic anhydride monomer, 1 to 3 parts of vitamin C and 3 to 7 parts of retarder. The structure of the quaternary ammonium salt long-chain monomer is shown in the specification, and n is equal to 8-20. The prepared composite polycarboxylic acid water reducer has good early strength, slump retaining and retarding effects, can obviously improve the performance of cement, is high in water reducing rate and low in sensitivity, has excellent adaptability to different cement, fly ash, concrete soil content, temperature and water consumption, and has a remarkable application prospect.
本发明提出了一种复合型聚羧酸减水剂及其制备方法，属于减水剂技术领域。复合型聚羧酸减水剂，包括以下重量份的原料：季铵盐长链单体40‑60份、甲基丙烯酸单体15‑25份、马来酸酐单体20‑30份、维生素C1‑3份、缓凝剂3‑7份；所述季铵盐长链单体的结构如下，其中，n=8‑20。本发明制得的复合聚羧酸减水剂具有良好的早强、保坍以及缓凝效果，能明显提高水泥的性能，减水率高，敏感性低，对于不同的水泥、粉煤灰、混凝土含土量、温度及用水量都有着优异的适应性，具有显著的应用前景。
Composite polycarboxylic acid water reducer and preparation method thereof
一种复合型聚羧酸减水剂及其制备方法
15.07.2022
Patent
Elektronische Ressource
Chinesisch
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