Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of viscosity reduction type polycarboxylate superplasticizer
The invention provides a preparation method of a viscosity reduction type polycarboxylate superplasticizer, and relates to the technical field of concrete admixtures. The preparation method of the viscosity reduction type polycarboxylic acid water reducer specifically comprises the following steps: S1, acidifying raw materials, S2, preparing an esterified monomer, adding the prepared 6-hydroxyhexylisopentenyl polyglycerol phosphate into a reaction container, adding 500 parts by mass of water, stirring, introducing nitrogen to remove oxygen, stirring and dissolving, adding unsaturated acid, controlling the pH value to be 4-5, and reacting for 2-3 hours to obtain the viscosity reduction type polycarboxylic acid water reducer. The preparation method comprises the following steps: adding an oxidant solution into an aqueous solution of 6-hydroxyhexylisopentenyl polyglycerol phosphate, controlling the temperature at 15-30 DEG C, adding the oxidant solution into the aqueous solution of 6-hydroxyhexylisopentenyl polyglycerol phosphate at one time, and fully stirring, S3, carrying out a copolymerization reaction, and S4, carrying out neutralization adjustment. The raw materials are subjected to phosphorylation, the adsorption capacity of the raw materials is improved, after the raw materials are fused with concrete, the adsorption capacity of the concrete to aggregate is improved, and the concrete has higher mud resistance and viscosity reduction performance.
本发明提供一种降粘型聚羧酸减水剂制备方法，涉及混凝土外加剂技术领域。该降粘型聚羧酸减水剂制备方法，具体包括以下步骤，S1.原材料酸化，S2.酯化单体制备，将制得的6－羟己基异戊烯基聚丙三醇基磷酸酯磷酸酯加入到反应容器中，装入500质量份的水，搅拌后通氮气除氧，搅拌溶解，加入不饱和酸，控制pH＝4‑5，将温度控制在到15‑30℃之间，向6－羟己基异戊烯基聚丙三醇基磷酸酯磷酸酯的水溶液中一次性加入氧化剂溶液，并充分搅拌，S3.共聚反应，S4.中和调节。通过将原材料进行磷酸化，提升原材料的吸附能力，与混凝土进行融合后，提升混凝土对骨料的吸附能力，使混凝土具有更强的抗泥和降粘性能。
Preparation method of viscosity reduction type polycarboxylate superplasticizer
The invention provides a preparation method of a viscosity reduction type polycarboxylate superplasticizer, and relates to the technical field of concrete admixtures. The preparation method of the viscosity reduction type polycarboxylic acid water reducer specifically comprises the following steps: S1, acidifying raw materials, S2, preparing an esterified monomer, adding the prepared 6-hydroxyhexylisopentenyl polyglycerol phosphate into a reaction container, adding 500 parts by mass of water, stirring, introducing nitrogen to remove oxygen, stirring and dissolving, adding unsaturated acid, controlling the pH value to be 4-5, and reacting for 2-3 hours to obtain the viscosity reduction type polycarboxylic acid water reducer. The preparation method comprises the following steps: adding an oxidant solution into an aqueous solution of 6-hydroxyhexylisopentenyl polyglycerol phosphate, controlling the temperature at 15-30 DEG C, adding the oxidant solution into the aqueous solution of 6-hydroxyhexylisopentenyl polyglycerol phosphate at one time, and fully stirring, S3, carrying out a copolymerization reaction, and S4, carrying out neutralization adjustment. The raw materials are subjected to phosphorylation, the adsorption capacity of the raw materials is improved, after the raw materials are fused with concrete, the adsorption capacity of the concrete to aggregate is improved, and the concrete has higher mud resistance and viscosity reduction performance.
本发明提供一种降粘型聚羧酸减水剂制备方法，涉及混凝土外加剂技术领域。该降粘型聚羧酸减水剂制备方法，具体包括以下步骤，S1.原材料酸化，S2.酯化单体制备，将制得的6－羟己基异戊烯基聚丙三醇基磷酸酯磷酸酯加入到反应容器中，装入500质量份的水，搅拌后通氮气除氧，搅拌溶解，加入不饱和酸，控制pH＝4‑5，将温度控制在到15‑30℃之间，向6－羟己基异戊烯基聚丙三醇基磷酸酯磷酸酯的水溶液中一次性加入氧化剂溶液，并充分搅拌，S3.共聚反应，S4.中和调节。通过将原材料进行磷酸化，提升原材料的吸附能力，与混凝土进行融合后，提升混凝土对骨料的吸附能力，使混凝土具有更强的抗泥和降粘性能。
Preparation method of viscosity reduction type polycarboxylate superplasticizer
一种降粘型聚羧酸减水剂制备方法
YU XIAOGUANG (Autor:in) / YIN QI (Autor:in) / LI CHONGYI (Autor:in)
29.11.2022
Patent
Elektronische Ressource
Chinesisch
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