Why there are hydrophilic branched chains in the structure of water-reducing agent?
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Author : Lzh
Update time : 2023-02-06 12:24:50
What is water-reducing agent? Water-reducing agent, is the most widely used and indispensable additive in ready-mixed concrete. A series of properties such as durability has been significantly improved. According to their effects, water-reducing agents can be divided into two types: ordinary water-reducing agents and high-efficiency water-reducing agents. 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, Aliphatic sulfonates, advanced polyols, hydroxy carboxylates, polyol complexes.
Action mechanism of water reducer Lubrication: The hydrophilic group in the water-reducing agent has a strong polarity, so the water-reducing agent adsorption film on the surface of cement particles can form a stable solvated water film with water molecules. This water film has a good lubrication effect and can effectively reduce the sliding resistance between cement particles, thus further improving the fluidity of concrete.
Electrostatic repulsion theory of water-reducing agent After cement hydration, due to the van der Waals force between the ions and the cement hydration minerals, the main minerals of cement have different charges during hydration, resulting in the flocculation structure of the coagulants. Most water-reducing agents are anionic surfactants. After being mixed into the concrete, the negative ions - S0 -, - C00 - in the water-reducing agent will be adsorbed on the cement particles under the action of the positive charge Ca2+mineral of the cement particles; the ion distribution that forms the diffusion double electric layer (Zel. a potential) is formed on the surface.
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 usor inquire at any time.
