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Due to the low softening point, ordinary polycarboxylate superplasticizers cannot be powdered by spray drying. Molecular design to increase softening point without losing water-reducing performance yields high-content powdered polymers.
Polycarboxylic acid series high-performance water reducing agent is a new generation of high-performance water reducing agent appearing at home and abroad in recent years. Compared with naphthalene series and other traditional superplasticizers, polycarboxylic acid series high-performance superplasticizers have many unique technical performance advantages:
Polycarboxylate water-reducing agents has the properties of high water reduction and high slump retention, and can impart high strength and durability to concrete. It has shown outstanding advantages in high-quality projects such as national large-scale water conservancy, nuclear power, and bridges. Compared with naphthalene-based water-reducing agents, polycarboxylate water-reducing agents are sensitive to the mud content of sand and gravel aggregates [1-3] and are expensive. Therefore, in laboratories and engineering construction, attempts have been made to mix polycarboxylate water-reducing agents and naphthalene-based water-reducing agents to take advantage of their respective advantages.
Due to its excellent properties, polycarboxylate superplasticizers are widely used in many fields, including:
Polycarboxylate polymer powder olycarboxylic acid powder breaks the convention in the production process and adopts thermal synthesis process, which can reduce production costs in terms of energy consumption. No release agent is added, and the purity of the produced products is higher, with the solid content controlled at around 98%. In terms of product performance, high-purity products have the characteristics of low dosage, high active ingredients and good collapse-preserving properties, further reducing customer costs.
As a new type of water-reducing agent after naphthalene-based, melamine-based, aliphatic-based and sulfamate-based water-reducing agents, polycarboxylic acid-based water-reducing agents have been widely used in many important projects due to their many unique performance advantages.
Polycarboxylate ether water reducing agent is a commonly used concrete admixture used to adjust the fluidity and workability of concrete. The size of its dosage will have an impact on the performance of concrete.
Polycarboxylate other superplasticizer is an important component of grouting materials. Water reducing agent is the most important quality of grouting materials. It is an additive that can significantly reduce the water content of grouting materials while maintaining the fluidity of grouting materials.
First of all, the raw material for the preparation of PCE Powder is the mother liquor of polycarboxylic acid water-reducing agent, and the mother liquor prepared by each manufacturer is different. To study its principle, in addition to external factors such as environmental temperature and manual operation, the process of polymerization monomer is also different. Therefore, if a manufacturer cannot control the production of polycarboxylic acid mother liquor, he can only purchase the mother liquor with different performance from other manufacturers and the quality of each batch can not be guaranteed to spray powder, resulting in the quality of PCE Powde produced.