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Preparation method of hydrophilic solvent type polycarboxylate superplasticizer
The invention relates to the technical field of concrete additives, and provides a preparation method of a hydrophilic solvent type polycarboxylate superplasticizer, which comprises the following steps of S1, uniformly mixing unsaturated organic acid, unsaturated carboxylic ester and unsaturated amide to prepare a solution A, S2, uniformly mixing water, a hydrophilic solvent, a molecular weight regulator and a reducing agent to prepare a solution B, S3, uniformly mixing a hydrophilic solvent, water and a polyether macromonomer until the mixture is completely dissolved, and mixing the mixture with an oxidizing agent and unsaturated organic acid to prepare a solution C, and S4, dropwise adding the solution A and the solution B into the solution C at the same time, and carrying out heat preservation reaction. According to the technical scheme, the problem that the drying efficiency of the polycarboxylate superplasticizer and the product performance cannot be considered at the same time in the prior art is solved.
本发明涉及混凝土添加剂技术领域，提出了一种亲水性溶剂型聚羧酸减水剂的制备方法，包括以下步骤：S1、将不饱和有机酸、不饱和羧酸酯及不饱和酰胺混合均匀制得溶液A；S2、将水、亲水性溶剂、分子量调节剂、还原剂混合均匀制得溶液B；S3、将亲水性溶剂、水、聚醚大单体混合均匀至完全溶解，并与氧化剂、不饱和有机酸混合制得溶液C；S4、将所述溶液A、所述溶液B同时滴加到所述溶液C中，保温反应。通过上述技术方案，解决了现有技术中的聚羧酸减水剂的干燥效率与产品性能无法兼顾的问题。
Preparation method of hydrophilic solvent type polycarboxylate superplasticizer
The invention relates to the technical field of concrete additives, and provides a preparation method of a hydrophilic solvent type polycarboxylate superplasticizer, which comprises the following steps of S1, uniformly mixing unsaturated organic acid, unsaturated carboxylic ester and unsaturated amide to prepare a solution A, S2, uniformly mixing water, a hydrophilic solvent, a molecular weight regulator and a reducing agent to prepare a solution B, S3, uniformly mixing a hydrophilic solvent, water and a polyether macromonomer until the mixture is completely dissolved, and mixing the mixture with an oxidizing agent and unsaturated organic acid to prepare a solution C, and S4, dropwise adding the solution A and the solution B into the solution C at the same time, and carrying out heat preservation reaction. According to the technical scheme, the problem that the drying efficiency of the polycarboxylate superplasticizer and the product performance cannot be considered at the same time in the prior art is solved.
本发明涉及混凝土添加剂技术领域，提出了一种亲水性溶剂型聚羧酸减水剂的制备方法，包括以下步骤：S1、将不饱和有机酸、不饱和羧酸酯及不饱和酰胺混合均匀制得溶液A；S2、将水、亲水性溶剂、分子量调节剂、还原剂混合均匀制得溶液B；S3、将亲水性溶剂、水、聚醚大单体混合均匀至完全溶解，并与氧化剂、不饱和有机酸混合制得溶液C；S4、将所述溶液A、所述溶液B同时滴加到所述溶液C中，保温反应。通过上述技术方案，解决了现有技术中的聚羧酸减水剂的干燥效率与产品性能无法兼顾的问题。
Preparation method of hydrophilic solvent type polycarboxylate superplasticizer
一种亲水性溶剂型聚羧酸减水剂的制备方法
CHEN ZHANHU (author) / HAN RUITAO (author) / XING LIANGCHEN (author) / ZHANG TIANMENG (author) / WANG WENBIN (author)
2021-07-16
Patent
Electronic Resource
Chinese
| European Patent Office | 2023
| European Patent Office | 2021
| European Patent Office | 2021