Concrete workability improving type water reducing agent as well as preparation method and application thereof

By using a polyphosphate side chain water reducing agent composed of copolymerization of large phosphate monomers and charged monomers, the problem of limited improvement of concrete and ease of ease of stamina in the prior art is solved, and significant improvement of concrete state and ease of slurry is achieved, and the dispersion and electrostatic adsorption of the water reducing agent are improved.

CN120209230APending Publication Date: 2025-06-27JIANGSU SOBUTE NEW MATERIALS CO LTD +2
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Patent Information

Application Number
CN202510272821.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-10
Publication Date
2025-06-27

AI Technical Summary

Technical Problem

The prior art has limited effect in improving concrete and ease, and it is difficult to effectively solve problems such as separation, lag and anti-severance, and water leakage at construction sites.

Method used

A polyphosphate side chain water reducing agent composed of phosphate-based large monomers and charged monomers by free radical copolymerization is used. The side chains contain a large number of P-O bonds and have high ductility, and the main chain adsorption group has a flexible chain segment formed by an ester bond.

Benefits of technology

Significantly improve the state and ease of concrete, reduce slurry phenomenon, improve the thickness and dispersion of the adsorption layer of the water reducing agent on the surface of cement particles, and enhance its electrostatic adsorption effect on cement particles.

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Patent Text Reader

Abstract

The invention provides a concrete workability improved water reducing agent with a polyphosphate side chain as well as a preparation method and application of the water reducing agent. The water reducing agent is prepared from a phosphate macromonomer and a charged monomer through free radical copolymerization, the structure is characterized in that a side chain contains a large number of P-O bonds and has high ductility, and a main chain adsorption group has a flexible chain segment formed by ester bonds. The side chain segment of the water reducing agent contains a large number of P-O bonds, the hydrogen-bond interaction is stronger than that of the conventional polyether polyol chain segment, the ductility of the side chain in a slurry solution is increased, the thickness of an adsorption layer of the water reducing agent on the surface of cement particles is increased, and the water reducing agent has high dispersity; an electrified monomer with a flexible chain segment is used as an adsorption unit of water reducing agent molecules, the effect of adsorption base embedding caused by curling and folding of a polymer chain segment is avoided, the electrostatic adsorption effect of the water reducing agent molecules on the surfaces of cement particles is effectively enhanced, the cement adaptability is improved, and the sensitivity is reduced.
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Citation Information

Patent Citations

  • A kind of preparation method of high workability ester polycarboxylate water reducer

    CN105175740B

  • Preparation method of polyphosphate water reducer

    CN105837768B

Cited By

  • Concrete retarding and water reducing agent as well as preparation method and application thereof

    CN121107734A