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A platform for research: civil engineering, architecture and urbanism
Viscosity-reducing water reducing agent and preparation method and application thereof
The invention relates to a composition for preparing a viscosity-reducing water reducing agent. The composition comprises a polyether macromonomer, a diethylene glycol maleic anhydride monoester monomer, a sodium methylallyl sulfonate monomer, an acrylic acid monomer, and an optional initiator, a reducing agent and a chain transfer agent. According to the novel viscosity-reducing water reducing agent, the polycarboxylic acid water reducing agent with a viscosity reducing function is synthesized in a water solution through a copolymerization reaction of an oxidation-reduction initiating system under the action of initiation of an oxidation-reduction system, a chain transfer agent and the like, and the water reducing agent is applied to concrete engineering and aims at adjusting the thickness of a water film layer of the viscosity-reducing water reducing agent on the surface of cement particles, and realizing a lubricating effect, and thus the viscosity of the concrete is reduced, the working performance of the concrete is improved, and the problems of high viscosity and low flow rate of high-grade concrete are solved.
本发明涉及一种用于制备降粘减水剂的组合物，其包括聚醚大单体、二甘醇马来酸酐单酯类单体、甲基烯丙基磺酸钠类单体、丙烯酸类单体以及任选的引发剂、还原剂和链转移剂。本发明的新型降粘减水剂，在氧化还原体系引发、链转移剂等作用下，在水溶液中通过氧化‑还原引发体系共聚反应合成了一种具有降粘功能的聚羧酸减水剂，应用在混凝土工程中，旨在调节降粘减水剂在水泥颗粒表面水膜层厚度，并起到润滑作用，从而起到降低混凝土粘度，改善混凝土工作性能，解决高标号混凝土粘度大流速慢的问题。
Viscosity-reducing water reducing agent and preparation method and application thereof
The invention relates to a composition for preparing a viscosity-reducing water reducing agent. The composition comprises a polyether macromonomer, a diethylene glycol maleic anhydride monoester monomer, a sodium methylallyl sulfonate monomer, an acrylic acid monomer, and an optional initiator, a reducing agent and a chain transfer agent. According to the novel viscosity-reducing water reducing agent, the polycarboxylic acid water reducing agent with a viscosity reducing function is synthesized in a water solution through a copolymerization reaction of an oxidation-reduction initiating system under the action of initiation of an oxidation-reduction system, a chain transfer agent and the like, and the water reducing agent is applied to concrete engineering and aims at adjusting the thickness of a water film layer of the viscosity-reducing water reducing agent on the surface of cement particles, and realizing a lubricating effect, and thus the viscosity of the concrete is reduced, the working performance of the concrete is improved, and the problems of high viscosity and low flow rate of high-grade concrete are solved.
本发明涉及一种用于制备降粘减水剂的组合物，其包括聚醚大单体、二甘醇马来酸酐单酯类单体、甲基烯丙基磺酸钠类单体、丙烯酸类单体以及任选的引发剂、还原剂和链转移剂。本发明的新型降粘减水剂，在氧化还原体系引发、链转移剂等作用下，在水溶液中通过氧化‑还原引发体系共聚反应合成了一种具有降粘功能的聚羧酸减水剂，应用在混凝土工程中，旨在调节降粘减水剂在水泥颗粒表面水膜层厚度，并起到润滑作用，从而起到降低混凝土粘度，改善混凝土工作性能，解决高标号混凝土粘度大流速慢的问题。
Viscosity-reducing water reducing agent and preparation method and application thereof
降粘减水剂及其制备方法和应用
MA XUEYING (author) / SUN TIANLEI (author)
2021-08-03
Patent
Electronic Resource
Chinese
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