Preparation of Polycarboxylate Terpolymer High Performance Water Reducer of MA-AA-F108

Abstract

In aqueous solution, the modified polyether (F108), maleic anhydride (MA), acrylic acid (AA) as raw materials, a novel polycarboxylate high performance water reducer of MA-AA-F108 was synthesised from free radical copolymerized through oxidation-reduction initiator system. Additionally, the polymerization conditions were optimized. The results indicate that the copolymer can be prepared under such optimum conditions, i.e., 3:3:2 molar ratio of MA, AA and F108, 0.5% of the mass fraction of oxidation initiator, 0.6% of the mass fraction of reduced initiator and 0.3% of the mass fraction of regulator, the results showed that the polyether-type polycarboxylic water reducer has excellent dispersing ability.