▎ 摘　　要

NOVELTY - Ligand obtained by polycondensation of the first polymer, thionyl chloride, 4-hydroxy-2,2':6',2"-terpyridine and dichloromethane, where the mass ratio if the first polymer and 4-hydroxy-2,2':6',2"-terpyridine is (10-12):(1-1.5), the first polymer is formed by free radical polymerization of methoxy polyethylene glycol acrylate, unsaturated monocarboxylic acid and acrylamide monomers, and the molecular weight of the methoxy polyethylene glycol acrylate is 2000-5000. The unsaturated monocarboxylic acid is methacrylic acid or acrylic acid, where acrylamide monomer is N,N-dimethylacrylamide, N-isopropylacrylamide and/or acrylamide. The oxidant is ammonium persulfate, potassium persulfate, sodium persulfate and/or hydrogen peroxide, the chain transfer agent is 3-mercaptopropionic acid, thioglycolic acid, mercaptoethanol, thioglycerol, and/or dodecyl mercaptan. USE - used as ligand. ADVANTAGE - The ligand has excellent conductivity and early strength performance. DETAILED DESCRIPTION - Ligand obtained by polycondensation of the first polymer, thionyl chloride, 4-hydroxy-2,2':6',2"-terpyridine and dichloromethane, where the mass ratio if the first polymer and 4-hydroxy-2,2':6',2"-terpyridine is (10-12):(1-1.5), the first polymer is formed by free radical polymerization of methoxy polyethylene glycol acrylate, unsaturated monocarboxylic acid and acrylamide monomers, and the molecular weight of the methoxy polyethylene glycol acrylate is 2000-5000 and the mass ratio of methoxy polyethylene glycol acrylate, unsaturated monocarboxylic acid and acrylamide-based monomer is (110-120):(10-15):(1-1.5). The unsaturated monocarboxylic acid is methacrylic acid or acrylic acid, where acrylamide monomer is N,N-dimethylacrylamide, N-isopropylacrylamide and/or acrylamide. The oxidant is ammonium persulfate, potassium persulfate, sodium persulfate and/or hydrogen peroxide, the chain transfer agent is 3-mercaptopropionic acid, thioglycolic acid, mercaptoethanol, thioglycerol, and/or dodecyl mercaptan and the reducing agent is L-ascorbic acid, sodium bisulfite, sodium hypophosphite, and/or sodium formaldehyde sulfoxylate and sodium hydroxide is used to neutralize pH. INDEPENDENT CLAIMS are also included for: (1) preparing ligand comprises adding 100-120 pts. wt. first polymer into the first reaction vessel, add 150-250 pts. wt.thionyl chloride, dropwise add 0.5-1 pts. wt. N,N-dimethylformamide, heating to reflux, reacting t1, and distilling unreacted thionyl chloride, adding 100-200 pts. wt. redistilled toluene and distilling under reduced pressure to remove residual thionyl chloride, adding 10-15 pts. wt. 4-hydroxy-2,2':6',2"-terpyridine, into the second reaction vessel, adding 10-30 pts. wt. dry dichloromethane, 2-5 pts. wt. triethylamine, stirring and heating to reflux to obtain D material, diluting material D with 400-500 pts. wt. dry dichloromethane, and adding dropwise to the first reaction vessel within t2, and the reaction is continued for t3 and removing solvent by rotary evaporation to yield the ligand; (2) conductive early-strength polycarboxylate water-reducing agent, comprising ligand, zinc nitrate and deionized water, where the mass ratio of the ligand and zinc nitrate is 15:(2-3); (3) preparing conductive early strength type polycarboxylate water-reducing agent comprises taking 150 pts. wt. ligand in the third reaction vessel, dissolving it with an equal amount of deionized water to prepare E material, and taking 20-30 pts. wt. zinc nitrate, adding the same amount of deionized water to dissolve, and the fifth reaction vessel, stirring for 5-10 minutes, adding E material droplets into the fifth reaction vessel, and replenishing water until the solid content is 35-45%; (4) conductive early-strength graphene dispersion slurry comprises graphene, graphene oxide, the conductive early-strength polycarboxylate water reducing agent and deionized water in mass ratio of (1-4):(1-4):5:50; and (5) preparing conductive early-strength type graphene dispersion slurry comprises mixing graphene, graphene oxide, conductive early-strength type polycarboxylate are water-reduced Mixing agent and deionized water, stirring at a speed of 500-540 revolutions/minutes for 1-2 minutes, and ultrasonicating for 20-60 minutes, the conductive early-strength graphene dispersion slurry is prepared.