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Polycarboxylic acid slump retaining agent and preparation method thereof
The invention belongs to a concrete admixture, and particularly relates to a polycarboxylic acid slump retaining agent and a preparation method thereof.The preparation method comprises the steps that by means of molecular structure design, resin acid and ethylene oxide are subjected to addition condensation, under the action of a base catalyst, a rosinyl macromonomer is obtained, and the rosinyl macromonomer, unsaturated polyoxyethylene ether, unsaturated acid, monomers and the like are subjected to a copolymerization reaction, so that the polycarboxylic acid slump retaining agent is obtained. The polycarboxylic acid slump retaining agent is obtained. Under the synergistic effect of various groups, the polycarboxylic acid slump retaining agent disclosed by the invention has the characteristics of strong slump retaining performance, good workability and high adaptability.
本发明属于一种混凝土外加剂，具体涉及一种聚羧酸保坍剂及其制备方法，本发明通过分子结构设计，采用树脂酸和环氧乙烷加成缩合，在碱催化剂的作用下，得到松香基大单体，和不饱和聚氧乙烯醚、不饱和酸及单体等发生共聚反应，得到所述的聚羧酸保坍剂。在各种基团的协同作用下，本发明的聚羧酸保坍剂具有保坍性能强，和易性好，适应性高的特点。
Polycarboxylic acid slump retaining agent and preparation method thereof
The invention belongs to a concrete admixture, and particularly relates to a polycarboxylic acid slump retaining agent and a preparation method thereof.The preparation method comprises the steps that by means of molecular structure design, resin acid and ethylene oxide are subjected to addition condensation, under the action of a base catalyst, a rosinyl macromonomer is obtained, and the rosinyl macromonomer, unsaturated polyoxyethylene ether, unsaturated acid, monomers and the like are subjected to a copolymerization reaction, so that the polycarboxylic acid slump retaining agent is obtained. The polycarboxylic acid slump retaining agent is obtained. Under the synergistic effect of various groups, the polycarboxylic acid slump retaining agent disclosed by the invention has the characteristics of strong slump retaining performance, good workability and high adaptability.
本发明属于一种混凝土外加剂，具体涉及一种聚羧酸保坍剂及其制备方法，本发明通过分子结构设计，采用树脂酸和环氧乙烷加成缩合，在碱催化剂的作用下，得到松香基大单体，和不饱和聚氧乙烯醚、不饱和酸及单体等发生共聚反应，得到所述的聚羧酸保坍剂。在各种基团的协同作用下，本发明的聚羧酸保坍剂具有保坍性能强，和易性好，适应性高的特点。
Polycarboxylic acid slump retaining agent and preparation method thereof
一种聚羧酸保坍剂及其制备方法
XIONG HAONAN (author) / JIANG ZHUOJUN (author) / ZHU YANJIAO (author) / ZHU GEHONG (author) / SHEN CONGCONG (author) / ZHU QIAOYONG (author) / HUANG WENYAO (author) / YAO XIAOYANG (author) / ZHANG PANFENG (author) / LUO HAO (author)
2024-02-02
Patent
Electronic Resource
Chinese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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