GAO Ruijun¹, LIU Xiao², QIAN Shanshan², ZHANG Bao³, WANG Hongxia¹, GAO Chunyong¹

(1. China Building Materials Academy Co., Ltd., Beijing 100024, China; 2. Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China; 3. Shandong Haoyu Building Materials Technology Co., Ltd., Binzhou 256200, China)

Abstract：As cement-based materials and gypsum-based materials have higher requirements for construction and mechanical properties, solid polycarboxylate superplasticizer is more and more widely used according to its characteristics of convenient transportation, long storage time and stable performance. Solid polycarboxylate superplasticizer has different properties due to different preparation methods.The production equipment, production process and product performance of solid polycarboxylate superplasticizer were summarized in this paper. The advantages and disadvantages of different preparation methods of solid polycarboxylate superplasticizer and the scope of production cost were summarized. The characteristics and influencing factors of preparation methods of solid polycarboxylate superplasticizer such as spray drying method, bulk polymerization method, precipitation method and adsorption method were described in detail. Because of the mature production process of spray drying method, but its cost is high due to multi-stage drying and energy saving and consumption reduction, the bulk polymerization has the problem of unequal reaction temperature, and the precipitation method and adsorption method have the problems of large use of organic solvents, environmental protection and cost, so based on this, it is proposed that the bulk polymerization method will be deeply studied and developed rapidly in the next few years.

Keywords：solid polycarboxylate superplasticizer; spray drying; bulk polymerization; precipitation method; adsorption method

Get Citation：GAO R J, LIU X, QIAN S S, et al. Preparation methods of solid polycarboxylate superplasticizer:a view[J]. China Powder Science and Technology, 2023, 29(4): 61-70.

DOI：10.13732/j.issn.1008-5548.2023.04.006

Received：2022-10-21,Revised：2022-12-20,Online：2023-05-19 10:14。

Funding Project：国家重点研发计划项目,编号: 2022YFC3902704、 2019YFC1520603。

First Author：高瑞军(1985—),男,高级工程师,博士,研究方向为砂浆、 混凝土外加剂及固废资源化利用。E-mail: gao_423@163.com。