A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Super-long slow-release slump-retaining polycarboxylate superplasticizer and preparation method thereof
The invention relates to a super-long slow-release slump-retaining polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of concrete admixtures, the super-long slow-release slump-retaining polycarboxylate superplasticizer comprises the following raw materials: a carboxylic acid monomer, a modified polyether monomer, an initiator, a reducing agent, a chain transfer agent, an oxidizing agent, a catalyst and deionized water; mixing and stirring a carboxylic acid monomer, a modified polyether monomer, a chain transfer agent and deionized water to obtain a first mixed solution; mixing and stirring an initiator and deionized water to obtain a second mixed solution; mixing and stirring a reducing agent, a catalyst and deionized water to obtain a third mixed solution; adding the first mixed solution and the second mixed solution into a reactor, stirring and mixing the first mixed solution and the second mixed solution, and standing for heat preservation to prepare a fourth mixed solution; heating the reactor, and dropwise adding the third mixed solution into the fourth mixed solution; through the interaction among the carboxylic acid monomer, the modified polyether monomer and the chain transfer agent, the concrete is soft in working state and good in workability.
一种超长缓释保坍型聚羧酸减水剂及其制备方法，属于混凝土外加剂技术领域，原料包括，羧酸单体、改性聚醚单体、引发剂、还原剂、链转移剂、氧化剂、催化剂和去离子水；将羧酸单体、改性聚醚单体和链转移剂与去离子水混合搅拌，得到第一混合液；将引发剂与去离子水混合搅拌，得到第二混合液；将还原剂、催化剂与去离子水混合搅拌，得到第三混合液；将第一混合液和第二混合液加入反应器中，将第一混合液和第二混合液搅拌混合，并静止保温，制备得到第四混合液；将反应器升温，向第四混合液中滴加第三混合液。本发明通过羧酸单体、改性聚醚单体和链转移剂之间的相互作用能够使得混凝土工作状态柔软，和易性较好。
Super-long slow-release slump-retaining polycarboxylate superplasticizer and preparation method thereof
The invention relates to a super-long slow-release slump-retaining polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of concrete admixtures, the super-long slow-release slump-retaining polycarboxylate superplasticizer comprises the following raw materials: a carboxylic acid monomer, a modified polyether monomer, an initiator, a reducing agent, a chain transfer agent, an oxidizing agent, a catalyst and deionized water; mixing and stirring a carboxylic acid monomer, a modified polyether monomer, a chain transfer agent and deionized water to obtain a first mixed solution; mixing and stirring an initiator and deionized water to obtain a second mixed solution; mixing and stirring a reducing agent, a catalyst and deionized water to obtain a third mixed solution; adding the first mixed solution and the second mixed solution into a reactor, stirring and mixing the first mixed solution and the second mixed solution, and standing for heat preservation to prepare a fourth mixed solution; heating the reactor, and dropwise adding the third mixed solution into the fourth mixed solution; through the interaction among the carboxylic acid monomer, the modified polyether monomer and the chain transfer agent, the concrete is soft in working state and good in workability.
一种超长缓释保坍型聚羧酸减水剂及其制备方法，属于混凝土外加剂技术领域，原料包括，羧酸单体、改性聚醚单体、引发剂、还原剂、链转移剂、氧化剂、催化剂和去离子水；将羧酸单体、改性聚醚单体和链转移剂与去离子水混合搅拌，得到第一混合液；将引发剂与去离子水混合搅拌，得到第二混合液；将还原剂、催化剂与去离子水混合搅拌，得到第三混合液；将第一混合液和第二混合液加入反应器中，将第一混合液和第二混合液搅拌混合，并静止保温，制备得到第四混合液；将反应器升温，向第四混合液中滴加第三混合液。本发明通过羧酸单体、改性聚醚单体和链转移剂之间的相互作用能够使得混凝土工作状态柔软，和易性较好。
Super-long slow-release slump-retaining polycarboxylate superplasticizer and preparation method thereof
一种超长缓释保坍型聚羧酸减水剂及其制备方法
SUN LICHENG (author) / HE YALAN (author) / YANG FENGYUAN (author) / CHEN HONGYU (author)
2024-04-02
Patent
Electronic Resource
Chinese
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