Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Organophosphorus grafted polycarboxylic acid mud-resistant water reducing agent and preparation method thereof
The invention discloses an organophosphorus grafted polycarboxylic acid mud-resistant water reducing agent which is obtained from a main chain of an organophosphorus polycarboxylic acid water reducingagent, wherein organophosphorus is composed of organophosphorus A and organophosphorus B, the organophosphorus A is polyoxyethylene ether glycerol phosphate, and the organophosphorus B is selected from any one of 2-hydroxyphosphonoacetic acid, diethylenetriamine pentamethylene phosphonic acid and 2-phosphonobutane-1, 2, 4-tricarboxylic acid. The invention also discloses a preparation method of the organophosphorus grafted polycarboxylic acid mud-resistant water reducing agent. According to the organophosphorus grafted polycarboxylic acid mud-resistant water reducing agent, organophosphorus with long-acting retarding special performance is grafted to a polycarboxylic acid main chain, phosphate groups are preferentially adsorbed to the surface of clay, adsorption of the clay to the carboxylic acid groups is weakened, and therefore good water reducing and slump retaining effects are still kept in a system with the high mud content.
本发明公开了一种抗泥型聚羧酸减水剂，所述减水剂是由有机磷聚羧酸减水剂的主链上而得到的，所述有机磷由有机磷A和有机磷B组成，所述有机磷A为聚氧乙烯醚丙三醇磷酸酯，所述有机磷B选自2‑羟基磷酸基乙酸、二乙烯三胺五亚甲基膦酸和2‑膦酰基丁烷‑1，2，4‑三羧酸中的任意一种。本发明还公开了所述有机磷接枝聚羧酸抗泥型减水剂的制备方法。本发明的有机磷接枝聚羧酸抗泥型减水剂，利用具有长效缓凝特殊性能的有机磷接枝在聚羧酸主链上，磷酸基团优先吸附在粘土表面，减弱了黏土对羧酸基团的吸附，从而在含泥量较高的体系中依然保持良好的减水和保坍效果。
Organophosphorus grafted polycarboxylic acid mud-resistant water reducing agent and preparation method thereof
The invention discloses an organophosphorus grafted polycarboxylic acid mud-resistant water reducing agent which is obtained from a main chain of an organophosphorus polycarboxylic acid water reducingagent, wherein organophosphorus is composed of organophosphorus A and organophosphorus B, the organophosphorus A is polyoxyethylene ether glycerol phosphate, and the organophosphorus B is selected from any one of 2-hydroxyphosphonoacetic acid, diethylenetriamine pentamethylene phosphonic acid and 2-phosphonobutane-1, 2, 4-tricarboxylic acid. The invention also discloses a preparation method of the organophosphorus grafted polycarboxylic acid mud-resistant water reducing agent. According to the organophosphorus grafted polycarboxylic acid mud-resistant water reducing agent, organophosphorus with long-acting retarding special performance is grafted to a polycarboxylic acid main chain, phosphate groups are preferentially adsorbed to the surface of clay, adsorption of the clay to the carboxylic acid groups is weakened, and therefore good water reducing and slump retaining effects are still kept in a system with the high mud content.
本发明公开了一种抗泥型聚羧酸减水剂，所述减水剂是由有机磷聚羧酸减水剂的主链上而得到的，所述有机磷由有机磷A和有机磷B组成，所述有机磷A为聚氧乙烯醚丙三醇磷酸酯，所述有机磷B选自2‑羟基磷酸基乙酸、二乙烯三胺五亚甲基膦酸和2‑膦酰基丁烷‑1，2，4‑三羧酸中的任意一种。本发明还公开了所述有机磷接枝聚羧酸抗泥型减水剂的制备方法。本发明的有机磷接枝聚羧酸抗泥型减水剂，利用具有长效缓凝特殊性能的有机磷接枝在聚羧酸主链上，磷酸基团优先吸附在粘土表面，减弱了黏土对羧酸基团的吸附，从而在含泥量较高的体系中依然保持良好的减水和保坍效果。
Organophosphorus grafted polycarboxylic acid mud-resistant water reducing agent and preparation method thereof
一种有机磷接枝聚羧酸抗泥型减水剂及其制备方法
11.08.2020
Patent
Elektronische Ressource
Chinesisch
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