Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylate superplasticizer and preparation method thereof
The invention belongs to concrete admixtures, and particularly relates to a polycarboxylate superplasticizer and a preparation method thereof. Through molecular structure design, resin acid and ethylene oxide are subjected to addition condensation under the action of a base catalyst to obtain a rosin-based macromonomer, and the rosin-based macromonomer, unsaturated polyoxyethylene ether, unsaturated acid and the like are subjected to a copolymerization reaction to obtain the polycarboxylate superplasticizer. Under the synergistic effect of various groups, the polycarboxylate superplasticizer disclosed by the invention has the characteristics of high water-reducing rate, good workability and high adaptability.
本发明属于混凝土外加剂，具体涉及一种聚羧酸减水剂及其制备方法。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，再和不饱和聚氧乙烯醚、不饱和酸等发生共聚反应，得到所述的聚羧酸减水剂。在各种基团的协同作用下，本发明的聚羧酸减水剂具有减水率高，和易性好，适应性高的特点。
Polycarboxylate superplasticizer and preparation method thereof
The invention belongs to concrete admixtures, and particularly relates to a polycarboxylate superplasticizer and a preparation method thereof. Through molecular structure design, resin acid and ethylene oxide are subjected to addition condensation under the action of a base catalyst to obtain a rosin-based macromonomer, and the rosin-based macromonomer, unsaturated polyoxyethylene ether, unsaturated acid and the like are subjected to a copolymerization reaction to obtain the polycarboxylate superplasticizer. Under the synergistic effect of various groups, the polycarboxylate superplasticizer disclosed by the invention has the characteristics of high water-reducing rate, good workability and high adaptability.
本发明属于混凝土外加剂，具体涉及一种聚羧酸减水剂及其制备方法。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，再和不饱和聚氧乙烯醚、不饱和酸等发生共聚反应，得到所述的聚羧酸减水剂。在各种基团的协同作用下，本发明的聚羧酸减水剂具有减水率高，和易性好，适应性高的特点。
Polycarboxylate superplasticizer and preparation method thereof
一种聚羧酸减水剂及其制备方法
XIONG HAONAN (Autor:in) / JIANG ZHUOJUN (Autor:in) / ZHU YANJIAO (Autor:in) / ZHU GEHONG (Autor:in) / SHEN CONGCONG (Autor:in) / ZHU QIAOYONG (Autor:in) / HUANG WENYAO (Autor:in) / XU YEQING (Autor:in) / ZHANG PANFENG (Autor:in) / LUO HAO (Autor:in)
13.02.2024
Patent
Elektronische Ressource
Chinesisch
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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