Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-sensitivity high-dispersion type water reducing agent as well as preparation method and application thereof
The invention discloses a low-sensitivity high-dispersion type water reducing agent as well as a preparation method and application thereof, and belongs to the technical field of concrete admixtures. The low-sensitivity high-dispersion type water reducing agent is prepared from a monomer A and a monomer B through acid ammonia condensation polymerization, the monomer A is a hydroxyl dicarboxylate compound of which the hydroxyl is substituted by a polyalkoxy chain segment; the monomer B is sulfonated aromatic diamine; the molar ratio of the monomer A to the monomer B is 1: (1-1.2), and the molecular weight of the low-sensitivity high-dispersion type water reducing agent is 20000-60000. According to the low-sensitivity high-dispersion type water reducing agent, a rigid main chain is composed of aromatic rings and amide, bending and folding of a comb-shaped structure of the water reducing agent are reduced, adsorption groups are fully exposed, the adsorption efficiency is greatly improved, the sensitivity of the water reducing agent in different saline-alkali environments and at different temperatures is reduced, and the adaptability of the water reducing agent to concrete raw materials such as cement is improved; and the construction requirements under complex working conditions are met.
本发明公开了一种低敏感高分散型减水剂、制备方法及应用，属于混凝土外加剂技术领域。所述低敏感高分散型减水剂由单体A与单体B经酸氨缩聚而成；所述单体A为羟基被聚烷氧基链段取代的羟基二羧酸酯类化合物；所述单体B为磺化的芳香二胺；所述单体A与单体B的摩尔比为1：1～1.2，所述低敏感高分散型减水剂的分子量为20000～60000。所述低敏感高分散型减水剂由芳环和酰胺组成刚性主链，减少减水剂梳状结构的弯曲折叠，充分暴露吸附基团，大幅提高了吸附效率，降低了减水剂在不同盐碱环境、不同温度下的敏感性，提高了其对水泥等混凝土原材料的适应性，满足复杂工况下的施工需求。
Low-sensitivity high-dispersion type water reducing agent as well as preparation method and application thereof
The invention discloses a low-sensitivity high-dispersion type water reducing agent as well as a preparation method and application thereof, and belongs to the technical field of concrete admixtures. The low-sensitivity high-dispersion type water reducing agent is prepared from a monomer A and a monomer B through acid ammonia condensation polymerization, the monomer A is a hydroxyl dicarboxylate compound of which the hydroxyl is substituted by a polyalkoxy chain segment; the monomer B is sulfonated aromatic diamine; the molar ratio of the monomer A to the monomer B is 1: (1-1.2), and the molecular weight of the low-sensitivity high-dispersion type water reducing agent is 20000-60000. According to the low-sensitivity high-dispersion type water reducing agent, a rigid main chain is composed of aromatic rings and amide, bending and folding of a comb-shaped structure of the water reducing agent are reduced, adsorption groups are fully exposed, the adsorption efficiency is greatly improved, the sensitivity of the water reducing agent in different saline-alkali environments and at different temperatures is reduced, and the adaptability of the water reducing agent to concrete raw materials such as cement is improved; and the construction requirements under complex working conditions are met.
本发明公开了一种低敏感高分散型减水剂、制备方法及应用，属于混凝土外加剂技术领域。所述低敏感高分散型减水剂由单体A与单体B经酸氨缩聚而成；所述单体A为羟基被聚烷氧基链段取代的羟基二羧酸酯类化合物；所述单体B为磺化的芳香二胺；所述单体A与单体B的摩尔比为1：1～1.2，所述低敏感高分散型减水剂的分子量为20000～60000。所述低敏感高分散型减水剂由芳环和酰胺组成刚性主链，减少减水剂梳状结构的弯曲折叠，充分暴露吸附基团，大幅提高了吸附效率，降低了减水剂在不同盐碱环境、不同温度下的敏感性，提高了其对水泥等混凝土原材料的适应性，满足复杂工况下的施工需求。
Low-sensitivity high-dispersion type water reducing agent as well as preparation method and application thereof
一种低敏感高分散型减水剂、制备方法及应用
YANG YONG (Autor:in) / HU CONG (Autor:in) / ZHOU DONGLIANG (Autor:in) / SHU XIN (Autor:in) / LI SHENTONG (Autor:in) / MAO YONGLIN (Autor:in) / LIU JIANZHONG (Autor:in) / ZHANG MINGYANG (Autor:in) / HAN FANGYU (Autor:in)
18.10.2024
Patent
Elektronische Ressource
Chinesisch
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