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

摘要

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 ofMA,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.