Quaternary ammonium salt concrete anti-mud agent, and preparation method and application thereof

[0032] The preparation process of the present embodiment quaternary ammonium salt concrete anti-mud agent is as follows:

[0033] Under an inert gas nitrogen atmosphere, 1 part of substance N, N, N, N-tetramethyl-p-diphenylamine and 2 parts of substance halogenated hydrocarbon 1-bromopentane were dissolved in acetonitrile, an inert organic solvent, so that N, Keep the mass concentration of N, N, N-tetramethyl-p-diphenylamine and 1-chloropentane at 40%, control the temperature at about 50°C, condense and reflux for 3 hours, then distill off the solvent acetonitrile under reduced pressure, add deionized water to dissolve Make its solid content 40%, to obtain the concrete anti-mud agent A1. The chemical reaction process is as follows:

[0034]

[0036] Under an inert gas nitrogen atmosphere, dissolve 1 part of substance N, N, N, N-tetramethyl-p-diphenylamine and 2 parts of substance halogenated hydrocarbon 2-chloroethanol in acetonitrile, an inert organic solvent, to make N, N , N, N-tetramethyl-p-diphenylamine and 1-chloropentane mass concentration were kept at 40%, the temperature was controlled at about 40°C, condensed and refluxed for 3h, and the solvent acetonitrile was removed by distillation under reduced pressure, and deionized water was added to dissolve the Its solid content is 40%, and concrete anti-mud agent A2 is obtained. The chemical reaction process is as follows:

[0037]

[0039] Under an inert gas nitrogen atmosphere, 1 part of the substance N, N, N, N-tetramethyl-p-diphenylamine and 2 parts of the substance halogenated hydrocarbon methyl iodide and dissolved in the inert organic solvent ethanol, so that N, N, The mass concentration of N, N-tetramethyl-p-diphenylamine and 1-chloropentane is maintained at 40%, the temperature is controlled at about 30°C, condensed and refluxed for 5h, and the solvent ethanol is removed by distillation under reduced pressure, and deionized water is added to dissolve it. The solid content is 40%, and the concrete anti-mud agent A3 is obtained. The chemical reaction process is as follows:

[0040]