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A platform for research: civil engineering, architecture and urbanism
Modified vinyl monomer, polycarboxylate superplasticizer containing modified vinyl monomer and preparation method of polycarboxylate superplasticizer
The invention relates to the technical field of polycarboxylate superplasticizers, and discloses a modified vinyl monomer, a polycarboxylate superplasticizer containing the modified vinyl monomer and a preparation method of the polycarboxylate superplasticizer, aiming at the problem that the existing polycarboxylate superplasticizer cannot simultaneously and effectively improve the water reducing and slump retaining effects fundamentally. The modified vinyl monomer is formed by an epoxy ring-opening reaction of an epoxy matrix and a modifier, a branched chain or a main chain of the epoxy matrix comprises an epoxy group and a double bond, the modifier is a monomer containing a modified group and a nucleophilic group, and the modified group comprises a carboxyl group and/or a sulfonic acid group. According to the invention, the raw material monomer for preparing the polycarboxylic acid water reducer is improved to obtain the modified vinyl monomer with water reducing and slump retaining effects, and the modified vinyl monomer, the unsaturated polyether macromonomer and the like are used for preparing the polycarboxylic acid water reducer, so that the overall capacity of the water reducer for functional groups can be improved; the water reducing and slump retaining properties of the polycarboxylate superplasticizer are fundamentally improved at the same time.
本发明涉及聚羧酸减水剂技术领域，针对现有的聚羧酸减水剂无法从根本上同时有效地提升减水和保坍效果的问题，公开了一种改性乙烯基单体及含其的聚羧酸减水剂及其制备方法，所述改性乙烯基单体由环氧基体与改性剂经环氧开环反应而成，所述环氧基体的支链或主链包括环氧基和双键，所述改性剂为含有改性基团和亲核基团的单体，所述改性基团包括羧基和/或磺酸基。本发明中，对制备聚羧酸减水剂的原料单体进行改进，得到同时具有减水和保坍作用的改性乙烯基单体，并用其与不饱和聚醚大单体等制备得到聚羧酸减水剂，可提高减水剂对功能基团的整体可容载量，从根本上同时提升聚羧酸减水剂的减水和保坍性能。
Modified vinyl monomer, polycarboxylate superplasticizer containing modified vinyl monomer and preparation method of polycarboxylate superplasticizer
The invention relates to the technical field of polycarboxylate superplasticizers, and discloses a modified vinyl monomer, a polycarboxylate superplasticizer containing the modified vinyl monomer and a preparation method of the polycarboxylate superplasticizer, aiming at the problem that the existing polycarboxylate superplasticizer cannot simultaneously and effectively improve the water reducing and slump retaining effects fundamentally. The modified vinyl monomer is formed by an epoxy ring-opening reaction of an epoxy matrix and a modifier, a branched chain or a main chain of the epoxy matrix comprises an epoxy group and a double bond, the modifier is a monomer containing a modified group and a nucleophilic group, and the modified group comprises a carboxyl group and/or a sulfonic acid group. According to the invention, the raw material monomer for preparing the polycarboxylic acid water reducer is improved to obtain the modified vinyl monomer with water reducing and slump retaining effects, and the modified vinyl monomer, the unsaturated polyether macromonomer and the like are used for preparing the polycarboxylic acid water reducer, so that the overall capacity of the water reducer for functional groups can be improved; the water reducing and slump retaining properties of the polycarboxylate superplasticizer are fundamentally improved at the same time.
本发明涉及聚羧酸减水剂技术领域，针对现有的聚羧酸减水剂无法从根本上同时有效地提升减水和保坍效果的问题，公开了一种改性乙烯基单体及含其的聚羧酸减水剂及其制备方法，所述改性乙烯基单体由环氧基体与改性剂经环氧开环反应而成，所述环氧基体的支链或主链包括环氧基和双键，所述改性剂为含有改性基团和亲核基团的单体，所述改性基团包括羧基和/或磺酸基。本发明中，对制备聚羧酸减水剂的原料单体进行改进，得到同时具有减水和保坍作用的改性乙烯基单体，并用其与不饱和聚醚大单体等制备得到聚羧酸减水剂，可提高减水剂对功能基团的整体可容载量，从根本上同时提升聚羧酸减水剂的减水和保坍性能。
Modified vinyl monomer, polycarboxylate superplasticizer containing modified vinyl monomer and preparation method of polycarboxylate superplasticizer
一种改性乙烯基单体及含其的聚羧酸减水剂及其制备方法
TIAN YAO (author) / HUANG SONG (author) / YU PENGXIANG (author) / GENG RUOHUAI (author) / ZHANG BIJUN (author) / LIU DONG (author)
2023-08-01
Patent
Electronic Resource
Chinese
IPC:
C07C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
,
Acyclische oder carbocyclische Verbindungen
/
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 | 2023
| European Patent Office | 2023
| European Patent Office | 2021