Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High viscosity reduction type polycarboxylate superplasticizer for ultra-high performance concrete and preparation method of high viscosity reduction type polycarboxylate superplasticizer
The invention discloses a high viscosity reduction type polycarboxylate superplasticizer for ultra-high performance concrete and a preparation method thereof, and the preparation method comprises the following steps: adding metered deionized water into a reaction container, then respectively adding methyl allyl polyoxyethylene ether, sodium methallyl sulfonate, alkyl acrylate and styrene, stirring and heating; adding metered hydrogen peroxide, dropwise adding a mixed aqueous solution of acrylic acid AA and methoxyl macrogol methacrylate MAA-MPEG and a mixed aqueous solution of mercaptoacetic acid and ascorbic acid at the same time, and keeping the temperature after dropwise adding; the dispersity of the prepared polycarboxylic acid water reducer can be improved, the hydrophilicity of the whole polycarboxylic acid molecule is reduced, and the effect of reducing the viscosity of concrete is obvious; on the premise that the concrete has good workability, the viscosity of the high-grade concrete can be obviously reduced; the method has good adaptability to different types of cement, avoids the need for water reducing agents of different types and structures according to different types of cement, and is beneficial to practical engineering application.
本发明公开了一种超高性能混凝土用高降粘型聚羧酸减水剂及制备方法，包括如下步骤：向反应容器中加入计量的去离子水，然后分别加入甲基烯丙基聚氧乙烯醚、甲基丙烯磺酸钠和丙烯酸烷基酯以及苯乙烯，搅拌并加热；加入计量的双氧水，同时滴加丙烯酸AA、甲基丙烯酸甲氧基聚乙二醇酯MAA‑MPEG的混合水溶液和巯基乙酸、抗坏血酸的混合水溶液，滴加完后保温。制备的能够提高聚羧酸减水剂分散性并降低整个聚羧酸分子的亲水性，对混凝土粘度的降低效果明显；在混凝土具有良好和易性的前提下，能显著降低高标号混凝土的粘度；对不同类型水泥具有很好的适应性，避免了针对不同类型水泥需要寻求不同类型和结构的减水剂，有利于实际的工程应用。
High viscosity reduction type polycarboxylate superplasticizer for ultra-high performance concrete and preparation method of high viscosity reduction type polycarboxylate superplasticizer
The invention discloses a high viscosity reduction type polycarboxylate superplasticizer for ultra-high performance concrete and a preparation method thereof, and the preparation method comprises the following steps: adding metered deionized water into a reaction container, then respectively adding methyl allyl polyoxyethylene ether, sodium methallyl sulfonate, alkyl acrylate and styrene, stirring and heating; adding metered hydrogen peroxide, dropwise adding a mixed aqueous solution of acrylic acid AA and methoxyl macrogol methacrylate MAA-MPEG and a mixed aqueous solution of mercaptoacetic acid and ascorbic acid at the same time, and keeping the temperature after dropwise adding; the dispersity of the prepared polycarboxylic acid water reducer can be improved, the hydrophilicity of the whole polycarboxylic acid molecule is reduced, and the effect of reducing the viscosity of concrete is obvious; on the premise that the concrete has good workability, the viscosity of the high-grade concrete can be obviously reduced; the method has good adaptability to different types of cement, avoids the need for water reducing agents of different types and structures according to different types of cement, and is beneficial to practical engineering application.
本发明公开了一种超高性能混凝土用高降粘型聚羧酸减水剂及制备方法，包括如下步骤：向反应容器中加入计量的去离子水，然后分别加入甲基烯丙基聚氧乙烯醚、甲基丙烯磺酸钠和丙烯酸烷基酯以及苯乙烯，搅拌并加热；加入计量的双氧水，同时滴加丙烯酸AA、甲基丙烯酸甲氧基聚乙二醇酯MAA‑MPEG的混合水溶液和巯基乙酸、抗坏血酸的混合水溶液，滴加完后保温。制备的能够提高聚羧酸减水剂分散性并降低整个聚羧酸分子的亲水性，对混凝土粘度的降低效果明显；在混凝土具有良好和易性的前提下，能显著降低高标号混凝土的粘度；对不同类型水泥具有很好的适应性，避免了针对不同类型水泥需要寻求不同类型和结构的减水剂，有利于实际的工程应用。
High viscosity reduction type polycarboxylate superplasticizer for ultra-high performance concrete and preparation method of high viscosity reduction type polycarboxylate superplasticizer
一种超高性能混凝土用高降粘型聚羧酸减水剂及制备方法
MING YANG (Autor:in) / LI LING (Autor:in) / CHEN PING (Autor:in) / XIANG WEIHENG (Autor:in) / HU CHENG (Autor:in) / LI QING (Autor:in) / GAN GUOXING (Autor:in) / PANGELIN (Autor:in)
09.05.2023
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2023
Preparation method of viscosity reduction type polycarboxylate superplasticizer
| Europäisches Patentamt | 2022
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2021
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2021
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2020