A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of modified polycarboxylate superplasticizer
The embodiment of the invention discloses a preparation method of a modified polycarboxylate superplasticizer. The cocatalyst ethyl triphenyl phosphonium bromide is introduced in the synthesis process of the third monomer intermediate, the polymerization reaction time of maleic anhydride and low-molecular-weight polyethylene glycol can be extremely effectively shortened, in addition, the ethyl triphenyl phosphonium bromide and metal ions can form a complex, and the synthesis efficiency is improved. The constructed metal organic framework material has height adjustability and a pore structure. The water reducing agent mother liquor prepared by the method disclosed by the invention is still excellent in peaceability and adaptability in a clay-containing concrete system while the compatibility of the water reducing agent mother liquor and other admixtures is improved. The synthesis method provided by the invention is simple in process, convenient to operate, short in reaction period and excellent in product performance, and has great significance in popularization and application of clay rock concrete.
本发明实施例公开了一种改性聚羧酸减水剂的制备方法。本发明在第三单体中间体的合成过程中引入助催化剂乙基三苯基溴化膦，能极其有效的缩短马来酸酐与低分子量聚乙二醇的聚合反应时间，另外，乙基三苯基溴化膦可以与金属离子形成配合物，构筑金属有机框架材料具有高度可调性和孔隙结构。本发明制备的减水剂母液在兼具与其他外加剂相容性提升的同时，在含粘土的混凝土体系中和易性与适应性方面表现依然优异。本发明所提供的合成方法工艺简单、操作方便、反应周期较短、产品性能优异，对于粘土岩混凝土的推广应用具有着重大意义。
Preparation method of modified polycarboxylate superplasticizer
The embodiment of the invention discloses a preparation method of a modified polycarboxylate superplasticizer. The cocatalyst ethyl triphenyl phosphonium bromide is introduced in the synthesis process of the third monomer intermediate, the polymerization reaction time of maleic anhydride and low-molecular-weight polyethylene glycol can be extremely effectively shortened, in addition, the ethyl triphenyl phosphonium bromide and metal ions can form a complex, and the synthesis efficiency is improved. The constructed metal organic framework material has height adjustability and a pore structure. The water reducing agent mother liquor prepared by the method disclosed by the invention is still excellent in peaceability and adaptability in a clay-containing concrete system while the compatibility of the water reducing agent mother liquor and other admixtures is improved. The synthesis method provided by the invention is simple in process, convenient to operate, short in reaction period and excellent in product performance, and has great significance in popularization and application of clay rock concrete.
本发明实施例公开了一种改性聚羧酸减水剂的制备方法。本发明在第三单体中间体的合成过程中引入助催化剂乙基三苯基溴化膦，能极其有效的缩短马来酸酐与低分子量聚乙二醇的聚合反应时间，另外，乙基三苯基溴化膦可以与金属离子形成配合物，构筑金属有机框架材料具有高度可调性和孔隙结构。本发明制备的减水剂母液在兼具与其他外加剂相容性提升的同时，在含粘土的混凝土体系中和易性与适应性方面表现依然优异。本发明所提供的合成方法工艺简单、操作方便、反应周期较短、产品性能优异，对于粘土岩混凝土的推广应用具有着重大意义。
Preparation method of modified polycarboxylate superplasticizer
一种改性聚羧酸减水剂的制备方法
GAO YUE (author) / LIU WEI (author) / LIU YONG (author) / LI PENG (author) / LI XIAOMEI (author) / ZUO XIAOQING (author) / CAO RUI (author) / LIU XINJIANG (author) / XU SHIRUI (author) / WANG WEI (author)
2024-01-05
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
/
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
| European Patent Office | 2021
| European Patent Office | 2023
| European Patent Office | 2023
Modified polycarboxylate superplasticizer and preparation method thereof
| European Patent Office | 2024