Corrosion-resistant ether polycarboxylate superplasticizer and preparation method

• Main Authors: GUO YUANQIANG, SHI YANNA, FANG YUNHUI, ZHANG XIAOFANG, KE YULIANG
• Format: Patent
• Language: Chinese; English
• Published: 27.04.2021
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE

The invention relates to the technical field of concrete admixtures, in particular to a corrosion-resistant ether polycarboxylate superplasticizer and a preparation method. The corrosion-resistant ether polycarboxylate superplasticizer is prepared from an esterification product, unsaturated polyoxyethylene ether, acrylic acid, unsaturated sulfonate and a rust-inhibiting functional monomer B with double bonds, amino groups and sulfur bonds through copolymerization. The esterification product is prepared from a rust-inhibiting functional monomer A with amino and hydroxyl, a silane monomer and unsaturated acid through an esterification reaction. According to the corrosion-resistant ether polycarboxylate superplasticizer provided by the invention, the corrosion-resistant functional monomer A with amino and hydroxyl, the silane monomer and unsaturated acid are esterified to prepare an esterification product which participate in a copolymerization reaction, so that molecules of the polycarboxylate superplasticizer