Polycarboxylate superplasticizer and preparation method thereof

• Main Authors: GAO YILING, HE XIAOXIONG, GAO JUNFENG
• Format: Patent
• Language: Chinese; English
• Published: 24.01.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE

The invention relates to a polycarboxylate superplasticizer and a preparation method thereof. The polycarboxylic acid water reducing agent is prepared from the following raw materials in parts by weight: 20 to 50 parts of polycarboxylic acid solution, 40 to 80 parts of acrylic acid type polycarboxylic acid water reducing agent, 10 to 30 parts of early strength type polycarboxylic acid water reducing agent, 30 to 50 parts of slump retaining type polycarboxylic acid water reducing agent, 25 to 45 parts of slow release type polycarboxylic acid water reducing agent, 2 to 8 parts of polyether polyol A, 2 to 7 parts of polyether polyol B and 10 to 50 parts of halogenated fatty acid. 5 to 15 parts of hydroxypropyl methyl cellulose and 1 to 5 parts of hydrolytic polymaleic anhydride. The polycarboxylate superplasticizer disclosed by the invention has good dispersity, has very high flowability when being applied to high-strength concrete, and greatly improves the strength of formed concrete. 本发明涉及一种聚羧酸减水剂及其制备方法，所述聚羧酸减