Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Ester-ether composite polycarboxylic acid water reducer and preparation method thereof
According to the method, in order to enable the molecular structure of ether bond functional groups and ester bond functional groups to be 1: 1, 3, 4-epoxyhexane ester is selected, and under the catalysis condition of an anion alkali metal catalyst, the ester bond functional groups and the ester bond functional groups are subjected to esterification reaction to obtain the ester-ether composite polycarboxylic acid water reducer. Synthesizing unsaturated polyoxyethylene ether containing an ester bond and an ether bond simultaneously by taking an unsaturated enol compound as a terminal group initiator; according to the invention, unsaturated polyoxyethylene ether with ester bonds and ether bonds and unsaturated carboxylic acid organic matters are subjected to a free radical copolymerization reaction so as to synthesize the polycarboxylate superplasticizer with better retarding and slump retaining properties and mud resistance.
本发明公开了一种酯醚复合型聚羧酸减水剂及其制备方法，该方法为了使醚键官能团与酯键官能团为1:1的分子结构，选用了3,4‑环氧己烷酯化物，在阴离子碱金属催化剂催化条件下，以不饱和烯醇类化合物作为端基起始剂合成同时含有酯键和醚键的不饱和聚氧乙烯醚；以合成的同时具有酯键和醚键的不饱和聚氧乙烯醚与不饱和羧酸类有机物通过自由基共聚反应，合成了具有更好的缓凝保坍性能和抗泥性能的聚羧酸系高效减水剂。
Ester-ether composite polycarboxylic acid water reducer and preparation method thereof
According to the method, in order to enable the molecular structure of ether bond functional groups and ester bond functional groups to be 1: 1, 3, 4-epoxyhexane ester is selected, and under the catalysis condition of an anion alkali metal catalyst, the ester bond functional groups and the ester bond functional groups are subjected to esterification reaction to obtain the ester-ether composite polycarboxylic acid water reducer. Synthesizing unsaturated polyoxyethylene ether containing an ester bond and an ether bond simultaneously by taking an unsaturated enol compound as a terminal group initiator; according to the invention, unsaturated polyoxyethylene ether with ester bonds and ether bonds and unsaturated carboxylic acid organic matters are subjected to a free radical copolymerization reaction so as to synthesize the polycarboxylate superplasticizer with better retarding and slump retaining properties and mud resistance.
本发明公开了一种酯醚复合型聚羧酸减水剂及其制备方法，该方法为了使醚键官能团与酯键官能团为1:1的分子结构，选用了3,4‑环氧己烷酯化物，在阴离子碱金属催化剂催化条件下，以不饱和烯醇类化合物作为端基起始剂合成同时含有酯键和醚键的不饱和聚氧乙烯醚；以合成的同时具有酯键和醚键的不饱和聚氧乙烯醚与不饱和羧酸类有机物通过自由基共聚反应，合成了具有更好的缓凝保坍性能和抗泥性能的聚羧酸系高效减水剂。
Ester-ether composite polycarboxylic acid water reducer and preparation method thereof
一种酯醚复合型聚羧酸减水剂及其制备方法
ZHU WEILIANG (Autor:in) / SHAO YUEFENG (Autor:in)
07.04.2023
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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