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The invention relates to a high slump loss resistance type polycarboxylic acid high-performance water reducing agent and a preparation method thereof. The water reducing agent is prepared from, by weight, 380 to 400 parts of methyl allyl alcohol polyoxyethylene ether, 3.5 to 4.5 parts of hydrogen peroxide, 2 to 2.5 parts of mercaptopropionic acid, 0.5 to 1.0 part of vitamin C, 35 to 40 parts of acrylic acid, 15 to 18 parts of caustic soda flakes, 10 to 20 parts of 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride, 5 to 8 parts of dimethylacetamide and 300 to 340 parts of water. Addition of a quantity of auxiliaries in the formula of the water reducing agent improves the dispersibility, promotes the progress of organic reactions, and increases the reaction efficiency, whether 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride and dimethylacetamide are combined or not has great influence on the reaction efficiency and the water reducing effect, and it is found in practicethat the combined use amount of the two auxiliaries is particularly sensitive, and the ideal effect cannot be achieved when the combined use amount is slightly large or slightly small. The water reducing agent prepared by using the formula is high in water reducing rate and good in slump loss resistance.
本发明涉及一种高保坍型聚羧酸高性能减水剂及其制备方法，由下列重量份的原料加工而成：甲基烯丙醇聚氧乙烯醚380‑400份，双氧水3.5‑4.5份，巯基丙酸2‑2.5份，维生素C 0.5‑1.0份，丙烯酸35‑40份，片碱15‑18份，1‑乙基‑(3‑二甲基氨基丙基)碳二亚胺盐酸盐10‑20份，二甲基乙酰胺5‑8份，水300‑340份。本发明的减水剂配方中，添加了一定量的助剂，可以提高分散性，促进有机反应的进行，加快反应的效率，尤其是1‑乙基‑(3‑二甲基氨基丙基)碳二亚胺盐酸盐与二甲基乙酰胺是否联用，对反应的效率和减水的效果有极大的影响，而且实践中发现，这两种助剂的联合使用量尤其敏感，稍多或者稍少，都达不到理想效果。本发明配方下的减水剂的减水率高、保坍性好。
The invention relates to a high slump loss resistance type polycarboxylic acid high-performance water reducing agent and a preparation method thereof. The water reducing agent is prepared from, by weight, 380 to 400 parts of methyl allyl alcohol polyoxyethylene ether, 3.5 to 4.5 parts of hydrogen peroxide, 2 to 2.5 parts of mercaptopropionic acid, 0.5 to 1.0 part of vitamin C, 35 to 40 parts of acrylic acid, 15 to 18 parts of caustic soda flakes, 10 to 20 parts of 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride, 5 to 8 parts of dimethylacetamide and 300 to 340 parts of water. Addition of a quantity of auxiliaries in the formula of the water reducing agent improves the dispersibility, promotes the progress of organic reactions, and increases the reaction efficiency, whether 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride and dimethylacetamide are combined or not has great influence on the reaction efficiency and the water reducing effect, and it is found in practicethat the combined use amount of the two auxiliaries is particularly sensitive, and the ideal effect cannot be achieved when the combined use amount is slightly large or slightly small. The water reducing agent prepared by using the formula is high in water reducing rate and good in slump loss resistance.
本发明涉及一种高保坍型聚羧酸高性能减水剂及其制备方法，由下列重量份的原料加工而成：甲基烯丙醇聚氧乙烯醚380‑400份，双氧水3.5‑4.5份，巯基丙酸2‑2.5份，维生素C 0.5‑1.0份，丙烯酸35‑40份，片碱15‑18份，1‑乙基‑(3‑二甲基氨基丙基)碳二亚胺盐酸盐10‑20份，二甲基乙酰胺5‑8份，水300‑340份。本发明的减水剂配方中，添加了一定量的助剂，可以提高分散性，促进有机反应的进行，加快反应的效率，尤其是1‑乙基‑(3‑二甲基氨基丙基)碳二亚胺盐酸盐与二甲基乙酰胺是否联用，对反应的效率和减水的效果有极大的影响，而且实践中发现，这两种助剂的联合使用量尤其敏感，稍多或者稍少，都达不到理想效果。本发明配方下的减水剂的减水率高、保坍性好。
High slump loss resistance type polycarboxylic acid high-performance water reducing agent and preparation method thereof
一种高保坍型聚羧酸高性能减水剂及其制备方法
NIE HAIBO (author)
2020-04-17
Patent
Electronic Resource
Chinese
Preparation method of high-slump-loss-resistant polycarboxylic acid water reducing agent
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