A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-water-reducing water reducing agent and preparation method thereof
The invention relates to the technical field of concrete additives, and relates to a preparation method of a high-water-reducing water reducing agent. The method comprises the following steps: S1, mixing deionized water and a composition A; S2, dropwise adding an initiator, a monomer B, a monomer C, a reducing agent and a chain transfer agent, and performing reacting; and S3, adjusting the pH to 6-8, wherein the cleaning agent comprises the following components in parts by mass: 3-5 parts of deionized water, 10-35 parts of a composition A, 1-3 parts of an initiator, 10-15 parts of a monomer B,15-20 parts of a monomer C, 3-5 parts of a reducing agent and 1-3 parts of a chain transfer agent, the composition A is formed by mixing one or more monomers A, the molecular structure of the monomerA is shown in the specification, R3 is an alkenyl group, the monomer B is any one of acrylic acid, methacrylic acid or ethylacrylic acid, and the monomer C is any one of acrylamide or 2-acrylamide-2-methylpropanesulfonic acid. The preparation method has the effect that the water reducing rate of the prepared water reducing agent is not easily influenced by the mud content and the powder content of the aggregate.
本发明涉及混凝土添加剂的技术领域，涉及一种高减水型减水剂的制备方法，其包括以下步骤：S1、混合去离子水与组合物A；S2、滴加引发剂、单体B、单体C、还原剂以及链转移剂，反应；S3、调节pH至6‑8；各组分的质量份数如下：去离子水3‑5份；组合物A 10‑35份；引发剂1‑3份；单体B 10‑15份；单体C 15‑20份；还原剂3‑5份；链转移剂1‑3份；组合物A由一种或多种单体A混合而成，单体A的分子结构如下所示：，其中，R3为烯基；单体B为丙烯酸、甲基丙烯酸或乙基丙烯酸中的任意一种；单体C为丙烯酰胺或2‑丙烯酰胺‑2‑甲基丙磺酸中的任意一种。本发明具有制备所得的减水剂的减水率不容易受到骨料的含泥量以及含粉量的影响的效果。
High-water-reducing water reducing agent and preparation method thereof
The invention relates to the technical field of concrete additives, and relates to a preparation method of a high-water-reducing water reducing agent. The method comprises the following steps: S1, mixing deionized water and a composition A; S2, dropwise adding an initiator, a monomer B, a monomer C, a reducing agent and a chain transfer agent, and performing reacting; and S3, adjusting the pH to 6-8, wherein the cleaning agent comprises the following components in parts by mass: 3-5 parts of deionized water, 10-35 parts of a composition A, 1-3 parts of an initiator, 10-15 parts of a monomer B,15-20 parts of a monomer C, 3-5 parts of a reducing agent and 1-3 parts of a chain transfer agent, the composition A is formed by mixing one or more monomers A, the molecular structure of the monomerA is shown in the specification, R3 is an alkenyl group, the monomer B is any one of acrylic acid, methacrylic acid or ethylacrylic acid, and the monomer C is any one of acrylamide or 2-acrylamide-2-methylpropanesulfonic acid. The preparation method has the effect that the water reducing rate of the prepared water reducing agent is not easily influenced by the mud content and the powder content of the aggregate.
本发明涉及混凝土添加剂的技术领域，涉及一种高减水型减水剂的制备方法，其包括以下步骤：S1、混合去离子水与组合物A；S2、滴加引发剂、单体B、单体C、还原剂以及链转移剂，反应；S3、调节pH至6‑8；各组分的质量份数如下：去离子水3‑5份；组合物A 10‑35份；引发剂1‑3份；单体B 10‑15份；单体C 15‑20份；还原剂3‑5份；链转移剂1‑3份；组合物A由一种或多种单体A混合而成，单体A的分子结构如下所示：，其中，R3为烯基；单体B为丙烯酸、甲基丙烯酸或乙基丙烯酸中的任意一种；单体C为丙烯酰胺或2‑丙烯酰胺‑2‑甲基丙磺酸中的任意一种。本发明具有制备所得的减水剂的减水率不容易受到骨料的含泥量以及含粉量的影响的效果。
High-water-reducing water reducing agent and preparation method thereof
高减水型减水剂及其制备方法
CHEN JIFANG (author) / HUANG JUNHUI (author) / HE HAILIANG (author)
2020-05-01
Patent
Electronic Resource
Chinese
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