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Preparation method of polycarboxylate superplasticizer and polycarboxylate superplasticizer
The invention discloses a preparation method of a polycarboxylate superplasticizer and the polycarboxylate superplasticizer, belongs to the technical field of concrete admixtures, and solves the problems of insufficient applicability and low performance of the existing polycarboxylate superplasticizer. The method comprises the following steps: stirring and dissolving a polyether monomer, sequentially adding a dispersing agent and a pH regulator, and stirring and dissolving to obtain a main solution; the polyether monomer comprises ethylene glycol monovinyl polyoxyethylene ether. Adding the main solution into a reaction kettle, adding the catalytic solution into the main solution, and stirring for a certain time to obtain a base solution; and simultaneously dropwise adding the first reaction solution and the second reaction solution into the base solution. And after the first reaction solution and the second reaction solution are dropwise added, stirring for a certain time, adding aging water, and stirring to obtain the polycarboxylate superplasticizer mother liquor. The water reducing performance and adaptability of the polycarboxylate superplasticizer can be improved, the slump retaining capacity can also be improved, and the gradual loss of slump is reduced. And meanwhile, the energy consumption can be reduced.
本申请公开了一种聚羧酸减水剂的制备方法及聚羧酸减水剂，属于混凝土外加剂技术领域，解决了现有聚羧酸减水剂适用性不足、性能低的问题。该方法包括：将聚醚单体搅拌溶解后，依次加入分散剂、PH调节剂搅拌溶解得到主溶液。聚醚单体包括乙二醇单乙烯基聚氧乙烯醚。将主溶液加入反应釜内，向主溶液内加入催化溶液搅拌一定时间得到底液。向底液中同时开始滴加第一反应溶液和第二反应溶液。第一反应溶液和第二反应溶液滴加完成后，搅拌一定时间再加入老化水搅拌，得到聚羧酸减水剂母液。本申请能够提高聚羧酸减水剂的减水性能和适应性，也能够提高保坍能力，减小坍落度的经时损失。同时，本申请能降低能源消耗。
Preparation method of polycarboxylate superplasticizer and polycarboxylate superplasticizer
The invention discloses a preparation method of a polycarboxylate superplasticizer and the polycarboxylate superplasticizer, belongs to the technical field of concrete admixtures, and solves the problems of insufficient applicability and low performance of the existing polycarboxylate superplasticizer. The method comprises the following steps: stirring and dissolving a polyether monomer, sequentially adding a dispersing agent and a pH regulator, and stirring and dissolving to obtain a main solution; the polyether monomer comprises ethylene glycol monovinyl polyoxyethylene ether. Adding the main solution into a reaction kettle, adding the catalytic solution into the main solution, and stirring for a certain time to obtain a base solution; and simultaneously dropwise adding the first reaction solution and the second reaction solution into the base solution. And after the first reaction solution and the second reaction solution are dropwise added, stirring for a certain time, adding aging water, and stirring to obtain the polycarboxylate superplasticizer mother liquor. The water reducing performance and adaptability of the polycarboxylate superplasticizer can be improved, the slump retaining capacity can also be improved, and the gradual loss of slump is reduced. And meanwhile, the energy consumption can be reduced.
本申请公开了一种聚羧酸减水剂的制备方法及聚羧酸减水剂，属于混凝土外加剂技术领域，解决了现有聚羧酸减水剂适用性不足、性能低的问题。该方法包括：将聚醚单体搅拌溶解后，依次加入分散剂、PH调节剂搅拌溶解得到主溶液。聚醚单体包括乙二醇单乙烯基聚氧乙烯醚。将主溶液加入反应釜内，向主溶液内加入催化溶液搅拌一定时间得到底液。向底液中同时开始滴加第一反应溶液和第二反应溶液。第一反应溶液和第二反应溶液滴加完成后，搅拌一定时间再加入老化水搅拌，得到聚羧酸减水剂母液。本申请能够提高聚羧酸减水剂的减水性能和适应性，也能够提高保坍能力，减小坍落度的经时损失。同时，本申请能降低能源消耗。
Preparation method of polycarboxylate superplasticizer and polycarboxylate superplasticizer
一种聚羧酸减水剂的制备方法及聚羧酸减水剂
CHEN KANGJIAN (author) / ZHANG BING (author) / QI HONGXING (author) / XIA WEI (author) / LIU YUBIN (author) / LUO XIANLI (author) / MENG YUHUI (author) / YU HE (author)
2025-01-03
Patent
Electronic Resource
Chinese
| European Patent Office | 2023
| European Patent Office | 2021