▎ 摘　　要

NOVELTY - Preparation of graphene oxide modified isopentenyl polyethylene glycol (TPEG)-based polycarboxylate superplasticizer involves carrying out free-radical copolymerization reaction of four kinds of monomer raw material in a water solvent system using a dual-initiation system comprising a persulfate initiation system and a redox initiation system. The reaction involves using 75.00-135.00 parts isopentenyl polyethylene glycol (TPEG) as the unsaturated macro-monomer, 30-75 parts graphene oxide as the functional monomer (A), 7.16-12.89 parts sodium p-styrene sulfonate as a functional monomer (B), 6.16-12.16 parts acrylic acid as a small monomer, 75-120 parts distilled water as the solvent, 1.125-2.025 parts persulfate as initiator, 3.75-6.75 parts oxidant in the redox initiation system, 1.125-2.025 parts reducing agent and 2.50-4.00 parts neutralizer. USE - Preparation of graphene oxide modified isopentenyl polyethylene glycol-based polycarboxylate superplasticizer. ADVANTAGE - The method improves the dispersibility and prevents reduction of graphene oxide, avoids homopolymerization of acrylic monomers, has low activation energy, fast initiation rate, short induction period, and requires relatively low temperatures for the preparation of TPEG-based polycarboxylate superplasticizer.