Water-reducing bulk polymerization solid polycarboxylate superplasticizer, and preparation method, use method and application thereof

• Main Authors: CHEN JIE, HE SUJUAN, WANG YIHUI, LUO QIONG, DONG JIANGUO
• Format: Patent
• Language: Chinese; English
• Published: 17.04.2020
• 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 water-reducing bulk polymerization solid polycarboxylate superplasticizer. Raw materials for preparing the water-reducing bulk polymerization solid polycarboxylate superplasticizer comprise unsaturated polyether, an alkenyl unsaturated monomer, an oxidizing agent and a phosphite or hypophosphite chain transfer agent. The invention also relates to a preparation method, ause method and an application of the water-reducing bulk polymerization solid polycarboxylate superplasticizer. The bulk polymerization solid polycarboxylate superplasticizer is prepared from odorlesssmall materials, conforms to the development trend of environment-friendly green chemistry, and is simple in preparation process, high in water reducing rate and good in slump retaining effect. 本申请涉及一种减水型本体聚合固体聚羧酸减水剂，用于制备所述减水型本体聚合固体聚羧酸减水剂的原料包括以下组分：不饱和聚醚、烯基不饱和单体、氧化剂以及亚磷酸盐或次亚磷酸盐链转移剂。本申请还涉及如上所述减水型本体聚合固体聚羧酸减水剂的制备方法、使用方法和应用。本文所述的本体聚合固体聚羧酸减水剂由无味小料制成，符合环保绿色化学的发展趋势，且制备工艺简单，减水率高，保坍效果良好。