Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-performance anti-cracking shrinkage-reducing concrete water reducing agent and preparation method thereof
The invention discloses a high-performance anti-cracking shrinkage-reducing concrete water reducing agent and a preparation method thereof. The high-performance anti-cracking shrinkage-reducing concrete water reducing agent comprises the following components in percentage by mass: 50-55% of an unsaturated polyether monomer, 5-7% of an acrylic acid small monomer, 0.1-0.2% of an initiator, 0.04-0.06% of a reducing agent, 0.1-0.2%of a chain transfer agent, and the balance of deionized water. The preparation method comprises the following steps: weighing raw materials, preparing a base material from an unsaturated polyether monomer and deionized water, preparing a solution A from an acrylic acid small monomer and deionized water, and preparing a solution B from a reducing agent, a chain transfer agent and deionized water; and adding an initiator into the base material, uniformly stirring, slowly dropwise adding the solution A and the solution B, and preserving heat after dropwise adding to finish polymerization. According to the invention, a redox system and a copolymerization system are adopted, the formula is simple, strong acid or strong alkali substances are not added, and a neutralizer does not need to be added for neutralization; and the selected unsaturated polyether monomer has high activity, the reaction can be carried out at a low temperature, and the process is simple and strong in controllability, so that the production cost is effectively reduced, and industrial production is facilitated.
本发明公开了一种高性能抗裂减缩型混凝土减水剂及其制备方法，其组分质量百分数为：不饱和聚醚单体50～55％；丙烯酸类小单体5～7％；引发剂0.1～0.2％；还原剂0.04～0.06％；链转移剂0.1～0.2％；其余为去离子水。其制备步骤为：原料称取，将不饱和聚醚单体和去离子水配制成底料，将丙烯酸类小单体和去离子水配置成A液，将还原剂、链转移剂和去离子水配置成B液；在底料中加入引发剂后搅拌均匀，然后缓慢滴加A液和B液，滴加完成后保温、完成聚合。本发明中采用氧化还原体系共聚体系，配方简单，未添加强酸或强碱物质，无需添加中和剂进行中和；选用的不饱和聚醚单体活性较高，在较低温度下即可进行反应，且工艺简单，可控性强，从而有效降低了生产成本，有利于工业化生产。
High-performance anti-cracking shrinkage-reducing concrete water reducing agent and preparation method thereof
The invention discloses a high-performance anti-cracking shrinkage-reducing concrete water reducing agent and a preparation method thereof. The high-performance anti-cracking shrinkage-reducing concrete water reducing agent comprises the following components in percentage by mass: 50-55% of an unsaturated polyether monomer, 5-7% of an acrylic acid small monomer, 0.1-0.2% of an initiator, 0.04-0.06% of a reducing agent, 0.1-0.2%of a chain transfer agent, and the balance of deionized water. The preparation method comprises the following steps: weighing raw materials, preparing a base material from an unsaturated polyether monomer and deionized water, preparing a solution A from an acrylic acid small monomer and deionized water, and preparing a solution B from a reducing agent, a chain transfer agent and deionized water; and adding an initiator into the base material, uniformly stirring, slowly dropwise adding the solution A and the solution B, and preserving heat after dropwise adding to finish polymerization. According to the invention, a redox system and a copolymerization system are adopted, the formula is simple, strong acid or strong alkali substances are not added, and a neutralizer does not need to be added for neutralization; and the selected unsaturated polyether monomer has high activity, the reaction can be carried out at a low temperature, and the process is simple and strong in controllability, so that the production cost is effectively reduced, and industrial production is facilitated.
本发明公开了一种高性能抗裂减缩型混凝土减水剂及其制备方法，其组分质量百分数为：不饱和聚醚单体50～55％；丙烯酸类小单体5～7％；引发剂0.1～0.2％；还原剂0.04～0.06％；链转移剂0.1～0.2％；其余为去离子水。其制备步骤为：原料称取，将不饱和聚醚单体和去离子水配制成底料，将丙烯酸类小单体和去离子水配置成A液，将还原剂、链转移剂和去离子水配置成B液；在底料中加入引发剂后搅拌均匀，然后缓慢滴加A液和B液，滴加完成后保温、完成聚合。本发明中采用氧化还原体系共聚体系，配方简单，未添加强酸或强碱物质，无需添加中和剂进行中和；选用的不饱和聚醚单体活性较高，在较低温度下即可进行反应，且工艺简单，可控性强，从而有效降低了生产成本，有利于工业化生产。
High-performance anti-cracking shrinkage-reducing concrete water reducing agent and preparation method thereof
一种高性能抗裂减缩型混凝土减水剂及其制备方法
ZHENG JIANMIN (Autor:in) / XIE ZHONGHUI (Autor:in) / BAO FENGLI (Autor:in) / ZHU JINJIAN (Autor:in) / LIN CHUNDONG (Autor:in) / ZHANG ZHILIANG (Autor:in) / ZHANG TINGHE (Autor:in)
28.01.2022
Patent
Elektronische Ressource
Chinesisch
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