Why the polarity of hydrophilic group in water reducer is strong?
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Author : Lzh
Update time : 2023-02-06 12:21:58
What is water-reducing agent? Water-reducing agent, because of its adsorption-dispersion effect, wet-slip effect, and wetting effect, after use, the water consumption of fresh concrete with the same working performance can be significantly reduced, thus improving the strength of concrete, A series of properties such as durability has been significantly improved. Water-reducing agents can be compounded with other admixtures to form early-strength type, ordinary type, retarding type, and air-entraining type water-reducing agents according to engineering needs. Water-reducing agents can be divided into lignin sulfonates and their derivatives, polycyclic aromatic sulfonates, and water-soluble resin sulfonates according to their main chemical components.
Preparation method of water-reducing agent-polycarboxylic acid series high-performance water-reducing agent In situ polymerization and grafting This method introduces side chains while the main chain polymerization. Polyether as the reaction medium of carboxylic acid unsaturated monomers overcomes the problem of poor compatibility between polycarboxylic acid and polyether. This method combines acrylic acid monomers, chain transfer agents, and initiators step by step into the aqueous solution containing methoxy polyethylene glycol and reacts under certain conditions. Although this method can control the polymer's molecular weight, the main chain can only choose a monomer containing a C00H group. Otherwise, it is difficult to graft, and this grafting reaction is a reversible equilibrium reaction. There is a large amount of water in the system before the reaction, and its grafting degree is not very high and difficult to control. This method is simple in process, low in production cost, but difficult in molecular design.
Application status of water-reducing agent-polycarboxylic acid series high-performance water-reducing agent Although China's water-reducing agent varieties are mainly second-generation tea series products, the development and application of polycarboxylic acid series high-performance water-reducing agents is relatively rapid. The polycarboxylic acid series water-reducing agent has been widely used in almost all major and key national projects, especially in water conservancy, hydropower, hydraulic, marine, bridge, and other projects. For example, the Three Gorges Project, Longtan Hydropower Station, Xiaowan Hydropower Station, Xiluodu Hydropower Station, Jinping Hydropower Station, etc., as well as the Yangshan Port Project, Ningbo Beilun Port Phase II Project, Sutong Bridge, Hangzhou Bay Bridge, Donghai Bridge, Maglev Project, etc.
Price of water-reducing agent Water-reducing agent particle size and purity will affect the product's price, and the purchase volume can also affect the cost of the water-reducing agent. A large amount of large amount will be lower. The price of the water-reducing agent can be found on our company's official website.
Water-reducing agent supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including water-reducing agents, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for a high-quality and cost-effective water-reducing agent, you are welcome tocontact us or inquire at any time.
