Superplasticizer monomer is used to make water reducer. Polycarboxylic Acid Water Reducer is an effective water reducer and cement dispersant in cement concrete applications. It is widely used in highways, bridges, embankments, tunnels, skyscrapers and other projects.
Superplasticizer monomer Instructions
The water reducing agent is environmentally friendly, non-flammable, explosive, and safe for transportation by train and car.
According to the differences in backbone structures, polycarboxylic acid superplasticizer products can be divided into two categories: using acrylic acid or methacrylic acid as backbone types, and grafting polyethers with different side chain lengths.
Others are polyethers whose primary bond is maleic anhydride and which have different side chain lengths. Based on this, several highly water-reducing products with different properties were derived.
Prior to the formation of the polycarboxylate dehydrating agent, it was necessary to reconstitute the supernatants from the polycarboxylate supernatants. It has the advantage of low dosage, good droplet stability, low concrete shrinkage, high molecular structure controllability, and high potential for high performance. Significant advantages such as the absence of formaldehyde in the process.
For the synthesis of a polycarboxylate water-reducing agent, the design of the molecular structure is crucial, including the head group, side chain density, and side chain length in the molecule. . . The synthesis methods mainly include in situ polymerization grafting method, first polymerization method, then functionalization method and direct copolymerization method of monomers.
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Use of superplasticizer monomer
In many concrete projects, traditional high performance concretes such as naphthalene series cannot meet project requirements due to technical performance limitations. A new-generation water-reducing agent, a high-performance water-reducing agent, polycarboxylate water, which has attracted a lot of attention at home and abroad because it has developed an effective molecular structure based on a truly dispersed cement mechanism and super spread out.
It can prevent concrete from sagging without noticeable delay and prevents concrete from sagging because at low concentration it can provide higher softening effect, good flow retention, high cement content, high molecular weight and high pore elimination to apply to a variety of plastics to apply. be proper techniques. , good strength development, excellent durability and effective polycyclic acid water reducer.
Arboxylic has comprehensive technical advantages and environmental protection properties that meet the needs of modern concrete technology. Therefore, water-reducing polycarboxylate high-performance water-reducing agents are increasingly used to produce high-performance concrete.
The use of polycarboxylic acid additives is reported to account for more than 80% of all high-performance additive products in Japan and more than 50% in North America and Europe. In my country, polycarboxylate water-reducing agents have only been successfully used in the Three Gorges Dam, Sutong Bridge, Tianwan Nuclear Power Plant, Beijing-Shanghai High-Speed Railway and other railway systems. and important national energy. Projects that produce significant results.