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A platform for research: civil engineering, architecture and urbanism
High-adsorption dispersion type polycarboxylate superplasticizer and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to a high-adsorption dispersion type polycarboxylate superplasticizer and a preparation method thereof. The high-adsorption dispersion type polycarboxylate superplasticizer is prepared from the following preparation raw materials: a modified polyether macromonomer, an esterification monomer, an alkoxy silane monomer, unsaturated acid, graphene oxide, an initiator, a chain transfer agent and a neutralizer. The high-adsorption dispersion type polycarboxylate superplasticizer provided by the invention has good adsorption dispersion performance, can promote the polycarboxylate superplasticizer to form a stable adsorption layer on the surfaces of cement particles in cement paste, can continuously release carboxyl and silicon hydroxyl in the cement hydration process, and has the strongest adsorption capacity action effect on the cement particles. Meanwhile, a cement hydration product in set cement can be promoted to form a regular microstructure, so that the adsorption of the cement particles is more uniform and dispersed, and the performance effect of the concrete is remarkably improved.
本发明涉及混凝土外加剂技术领域，特别涉及一种高吸附分散型聚羧酸减水剂及其制备方法，其中，所述高吸附分散型聚羧酸减水剂包括以下制备原料：改性聚醚大单体、酯化单体、烷氧基硅烷单体、不饱和酸、氧化石墨烯、引发剂、链转移剂和中和剂。本发明提供的高吸附分散型聚羧酸减水剂具有良好的吸附分散性能，能够促使聚羧酸减水剂在水泥浆体中的水泥颗粒表面形成稳定的吸附层，并且在水泥水化过程中能够不断释放出羧基和硅羟基，对水泥颗粒的吸附能力作用效果最强，同时也能促进水泥石中水泥水化产物形成整齐规整的微观结构，使其对水泥颗粒的吸附更加均匀分散，显著提高混凝土性能效果。
High-adsorption dispersion type polycarboxylate superplasticizer and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to a high-adsorption dispersion type polycarboxylate superplasticizer and a preparation method thereof. The high-adsorption dispersion type polycarboxylate superplasticizer is prepared from the following preparation raw materials: a modified polyether macromonomer, an esterification monomer, an alkoxy silane monomer, unsaturated acid, graphene oxide, an initiator, a chain transfer agent and a neutralizer. The high-adsorption dispersion type polycarboxylate superplasticizer provided by the invention has good adsorption dispersion performance, can promote the polycarboxylate superplasticizer to form a stable adsorption layer on the surfaces of cement particles in cement paste, can continuously release carboxyl and silicon hydroxyl in the cement hydration process, and has the strongest adsorption capacity action effect on the cement particles. Meanwhile, a cement hydration product in set cement can be promoted to form a regular microstructure, so that the adsorption of the cement particles is more uniform and dispersed, and the performance effect of the concrete is remarkably improved.
本发明涉及混凝土外加剂技术领域，特别涉及一种高吸附分散型聚羧酸减水剂及其制备方法，其中，所述高吸附分散型聚羧酸减水剂包括以下制备原料：改性聚醚大单体、酯化单体、烷氧基硅烷单体、不饱和酸、氧化石墨烯、引发剂、链转移剂和中和剂。本发明提供的高吸附分散型聚羧酸减水剂具有良好的吸附分散性能，能够促使聚羧酸减水剂在水泥浆体中的水泥颗粒表面形成稳定的吸附层，并且在水泥水化过程中能够不断释放出羧基和硅羟基，对水泥颗粒的吸附能力作用效果最强，同时也能促进水泥石中水泥水化产物形成整齐规整的微观结构，使其对水泥颗粒的吸附更加均匀分散，显著提高混凝土性能效果。
High-adsorption dispersion type polycarboxylate superplasticizer and preparation method thereof
一种高吸附分散型聚羧酸减水剂及其制备方法
ZHU SHAOHONG (author) / LIN YANMEI (author) / LAI HUAZHEN (author) / FANG YUNHUI (author) / LI GELI (author) / CHEN ZHANHUA (author) / SHAO YOUZHE (author)
2021-04-27
Patent
Electronic Resource
Chinese
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