High-adaptability polycarboxylate superplasticizer and preparation method thereof

• Main Authors: HUI YONGPAN, WU ZHULIANG, YU XIAORONG, XIE ZHONGHUI, ZHENG JIANMIN, BAO FENGLI, ZHU JINJIAN
• Format: Patent
• Language: Chinese; English
• Published: 28.04.2020
• 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 a high-adaptability polycarboxylate superplasticizer and a preparation method thereof. The applicable polycarboxylate superplasticizer comprises 200 to 216 parts of deionizedwater, 190 to 200 parts of a polyether macromonomer, 19 to 21 parts of acrylic acid, 1 to 2 parts of a functional monomer, 0.8 to 0.85 part of a chain transfer agent, 0.7 to 0.9 part of an oxidizing initiator, 0.25 to 0.29 part of a reducing initiator and 19 to 20 parts of a neutralizer. Compared with a common polycarboxylate superplasticizer, the superplasticizer has a more complex space structure and steric hindrance, and is more suitable for complex ground materials; meanwhile, functional groups such as phosphate groups and sulfonic groups are introduced, so that the superplasticizer has relatively good slump loss resistance, and the workability and slump loss resistance of concrete are improved. 本发明涉及一种高适应性聚羧酸减水剂及其制备方法，该适用性聚羧酸减水剂的组成如下：去离子水200-216份，聚醚大单体190-200份，丙烯酸19-21份，功能性单体1-2份，链转移剂0.8-0.85份，氧化性引发剂0.7-0.9份，