What is polycarboxylic acid water reducer


Polycarboxylate Superplasticizer is a high-performance superplasticizer, a cement dispersant used in cement concrete and widely used in highways, bridges, dams, tunnels, high-rise buildings, and other projects. The product is green, non-flammable, non-explosive, and can be safely transported by train and car. Their main chain structure can be divided into two categories of polycarboxylic acid superplasticizer products: one with acrylic acid or methacrylic acid as the main chain, graft different side chain length polyether. The other kind of polyether is maleic anhydride with different side chain lengths. A series of high-performance water-reducing agent products with different characteristics are derived based on this. Before the appearance of polycarboxylic acid admixtures, there were lignosulfonate admixtures, naphthalene sulfonate formaldehyde condensation, melamine formaldehyde condensation, acetone sulfonate formaldehyde condensation, sulfamate formaldehyde condensation, and so on. In the early 1980s, Japan took the lead in successfully developing polycarboxylic acid superplasticizers. The new generation of polycarboxylic acid superplasticizers overcomes some disadvantages of traditional superplasticizers. It has the advantages of low dosage, good slump retention performance, a low shrinkage rate of concrete, robust adjustability of molecular structure, great potential for high performance, and no formaldehyde in the production process. Synthesis method: For the synthesis of polycarboxylic acid superplasticizer, the design of the molecular structure is essential, including leading chain group, side chain density, side chain length, etc. The synthesis methods mainly include in situ polymerization grafting, polymerization before functionalization, and direct monomer copolymerization. If you are looking for high quality, high purity and cost-effective water reducer, or if you require the latest price of water reducer, please feel free to email contact mis-asia.

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