Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Gypsum water reducing agent as well as preparation method and application thereof
The invention belongs to building material admixtures, and particularly relates to a gypsum water reducer as well as a preparation method and application thereof. The preparation method of the gypsum water reducing agent comprises the following steps: performing free radical polymerization reaction on an esterified macromonomer, acrylic acid and an ethylene glycol monovinyl polyoxyethylene ether macromonomer in the presence of a chain transfer agent and a redox initiator, the esterified macromonomer is an esterification reaction product of methoxy polyethylene glycol and 1-butylene-2, 3, 4-tricarboxylic acid, and the redox initiator is a mixture of a chain transfer agent and a redox initiator. The obtained free radical polymerization reaction product is the gypsum water reducing agent. The gypsum water reducer obtained by the method provided by the invention is small in fluidity time loss, and has great industrial application prospects.
本发明属于建筑材料外加剂，具体涉及一种石膏减水剂及其制备方法和应用。所述石膏减水剂的制备方法包括将酯化大单体、丙烯酸和乙二醇单乙烯基聚氧乙烯醚大单体在链转移剂以及氧化还原型引发剂的存在下进行自由基聚合反应，所述酯化大单体为甲氧基聚乙二醇和1‑丁烯‑2,3,4‑三羧酸的酯化反应产物，所得自由基聚合反应产物即为石膏减水剂。采用本发明提供的方法所得石膏减水剂流动度经时损失小，极具工业应用前景。
Gypsum water reducing agent as well as preparation method and application thereof
The invention belongs to building material admixtures, and particularly relates to a gypsum water reducer as well as a preparation method and application thereof. The preparation method of the gypsum water reducing agent comprises the following steps: performing free radical polymerization reaction on an esterified macromonomer, acrylic acid and an ethylene glycol monovinyl polyoxyethylene ether macromonomer in the presence of a chain transfer agent and a redox initiator, the esterified macromonomer is an esterification reaction product of methoxy polyethylene glycol and 1-butylene-2, 3, 4-tricarboxylic acid, and the redox initiator is a mixture of a chain transfer agent and a redox initiator. The obtained free radical polymerization reaction product is the gypsum water reducing agent. The gypsum water reducer obtained by the method provided by the invention is small in fluidity time loss, and has great industrial application prospects.
本发明属于建筑材料外加剂，具体涉及一种石膏减水剂及其制备方法和应用。所述石膏减水剂的制备方法包括将酯化大单体、丙烯酸和乙二醇单乙烯基聚氧乙烯醚大单体在链转移剂以及氧化还原型引发剂的存在下进行自由基聚合反应，所述酯化大单体为甲氧基聚乙二醇和1‑丁烯‑2,3,4‑三羧酸的酯化反应产物，所得自由基聚合反应产物即为石膏减水剂。采用本发明提供的方法所得石膏减水剂流动度经时损失小，极具工业应用前景。
Gypsum water reducing agent as well as preparation method and application thereof
一种石膏减水剂及其制备方法和应用
CHEN WENSHAN (Autor:in) / PAN ZHIFENG (Autor:in) / ZHAO HUI (Autor:in) / QIU YUETAO (Autor:in) / ZHANG XIAOFANG (Autor:in) / QIU HAILI (Autor:in)
12.01.2024
Patent
Elektronische Ressource
Chinesisch
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