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Branched structure side chain monomer, branched structure slow-release polycarboxylate superplasticizer and preparation method of branched structure side chain monomer and branched structure slow-release polycarboxylate superplasticizer
The invention relates to the technical field of chemical materials, in particular to a branched-structure side chain monomer, a branched-structure slow-release polycarboxylic acid water reducer and a preparation method thereof, and the preparation method of the branched-structure side chain monomer comprises the following steps: adding an intermediate 2 into a container, introducing nitrogen to remove air in a system, adding an intermediate 3 into the container, and reacting to obtain a branched-structure side chain monomer; the preparation method comprises the following steps: adding an intermediate 2 into a reaction kettle, adding acetonitrile, dissolving, fully stirring to completely dissolve the intermediate 2, adding potassium carbonate and potassium iodide, heating, dropwise adding amino alcohol, condensing and refluxing at normal temperature after dropwise adding, and filtering a product to obtain a branched structure side chain monomer. In an alkaline environment, a polycarboxylic acid molecule is in a three-dimensional molecule shape similar to a sphere, the side chain winding phenomenon is less than that of traditional PCE, and good adsorption efficiency and wider adsorption area are achieved; and an ester group structure in a molecule can be exposed, so that polycarboxylic acid of the branched structure slow-release polycarboxylic acid water reducer has good slow-release performance and important practical application value.
本发明涉及化工材料技术领域，特别涉及提供一种支化结构侧链单体、支化结构缓释型聚羧酸减水剂其制备方法，支化结构侧链单体的制备方法，包括以下步骤：在容器中加入中间体2，通入氮气去除体系内空气，加入乙腈溶解充分搅拌使中间体2完全溶解，加入碳酸钾和碘化钾，加热并滴加氨基醇，滴加完以后在常温下冷凝回流，将产物过滤后得到支化结构侧链单体，本发明合成的减水剂侧链具有树状支化结构，侧链空间位阻大，在碱性环境下聚羧酸分子呈近似球状的三维分子形状，侧链缠绕现象较传统PCE少，具有很好的吸附效率和更宽的吸附面积；且能够暴露出分子内的酯基结构，使支化结构缓释型聚羧酸减水剂的聚羧酸具有良好的缓释性能具有重要的实际应用价值。
Branched structure side chain monomer, branched structure slow-release polycarboxylate superplasticizer and preparation method of branched structure side chain monomer and branched structure slow-release polycarboxylate superplasticizer
The invention relates to the technical field of chemical materials, in particular to a branched-structure side chain monomer, a branched-structure slow-release polycarboxylic acid water reducer and a preparation method thereof, and the preparation method of the branched-structure side chain monomer comprises the following steps: adding an intermediate 2 into a container, introducing nitrogen to remove air in a system, adding an intermediate 3 into the container, and reacting to obtain a branched-structure side chain monomer; the preparation method comprises the following steps: adding an intermediate 2 into a reaction kettle, adding acetonitrile, dissolving, fully stirring to completely dissolve the intermediate 2, adding potassium carbonate and potassium iodide, heating, dropwise adding amino alcohol, condensing and refluxing at normal temperature after dropwise adding, and filtering a product to obtain a branched structure side chain monomer. In an alkaline environment, a polycarboxylic acid molecule is in a three-dimensional molecule shape similar to a sphere, the side chain winding phenomenon is less than that of traditional PCE, and good adsorption efficiency and wider adsorption area are achieved; and an ester group structure in a molecule can be exposed, so that polycarboxylic acid of the branched structure slow-release polycarboxylic acid water reducer has good slow-release performance and important practical application value.
本发明涉及化工材料技术领域，特别涉及提供一种支化结构侧链单体、支化结构缓释型聚羧酸减水剂其制备方法，支化结构侧链单体的制备方法，包括以下步骤：在容器中加入中间体2，通入氮气去除体系内空气，加入乙腈溶解充分搅拌使中间体2完全溶解，加入碳酸钾和碘化钾，加热并滴加氨基醇，滴加完以后在常温下冷凝回流，将产物过滤后得到支化结构侧链单体，本发明合成的减水剂侧链具有树状支化结构，侧链空间位阻大，在碱性环境下聚羧酸分子呈近似球状的三维分子形状，侧链缠绕现象较传统PCE少，具有很好的吸附效率和更宽的吸附面积；且能够暴露出分子内的酯基结构，使支化结构缓释型聚羧酸减水剂的聚羧酸具有良好的缓释性能具有重要的实际应用价值。
Branched structure side chain monomer, branched structure slow-release polycarboxylate superplasticizer and preparation method of branched structure side chain monomer and branched structure slow-release polycarboxylate superplasticizer
支化结构侧链单体、支化结构缓释型聚羧酸减水剂其制备方法
CHEN ZHANHUA (author) / FANG YUNHUI (author) / KE YULIANG (author) / LAI HUAZHEN (author) / WANG ZHAOPENG (author) / ZHOU LONGJIE (author) / GUO YUANQIANG (author) / LIN TIANXING (author) / XIE FEI (author) / WU WENXIAN (author)
2024-04-05
Patent
Electronic Resource
Chinese
IPC:
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
/
C04B
Kalk
,
LIME
/
C07D
HETEROCYCLIC COMPOUNDS
,
Heterocyclische Verbindungen
/
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
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