A concrete composite viscosity enhancer and preparation method thereof

By preparing a composite tackifier, the combination of polyacrylic resin and modified porphyrin and modified silica fume is solved, and the compatibility and antibacterial function of existing concrete tackifiers are achieved, and good compatibility and effective antibacterial properties are achieved with polycarboxylic acid-based water reducing agents, extending the service life of concrete and ensuring the hygiene and safety of buildings.

CN119371136BActive Publication Date: 2025-03-25GANSU JINKAINING IND & TRADE GRP CO LTD
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Patent Information

Application Number
CN202411907060.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-03-25
Estimated Expiration
2044-12-24

AI Technical Summary

Technical Problem

The existing concrete tackifiers have poor compatibility with polycarboxylic acid-based water reducing agents and lack antibacterial functions, making it difficult to effectively prevent microorganisms from growing and spreading on the surface or inside of the concrete.

Method used

Using a preparation method of a concrete composite tackifier, the polyacrylic resin obtained by polymerizing acrylic acid, methyl methacrylate, acrylamide, and vinyl diphenylphosphine is reacted with a modified porphyrin, and the water retention and antibacterial properties are increased by sulfonation grafting the sulfonic acid group with hydrophilicity. At the same time, the vinyl trimethoxysilane pretreated fume is reacted with tetravinyl tetramethylcyclotetrasiloxane and vinyl boric acid pine alcohol ester to prepare a modified fume, and mixed it with the polyacrylic resin to produce a concrete composite tackifier with good compatibility and antibacterial properties.

Benefits of technology

It has achieved good compatibility with polycarboxylic acid-based water reducing agents, and has the function of effectively inhibiting or killing microorganisms, extending the service life of concrete, ensuring the hygiene and safety of buildings, and providing people with a healthier and more comfortable living environment.

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Abstract

The invention discloses a concrete composite tackifier and a preparation method thereof, and relates to the technical field of concrete. When preparing the concrete composite tackifier, the invention firstly reacts a polyacrylic acid resin obtained by polymerizing acrylic acid, methyl methacrylate, acrylamide, and vinyl diphenyl phosphine with modified porphyrin, and then sulfonates to obtain a modified polyacrylic acid resin; secondly, silica fume pretreated with vinyl trimethoxysilane reacts with tetravinyl tetramethyl cyclotetrasiloxane and vinyl boric acid pinacol ester to obtain modified silica fume; finally, the polyacrylic acid resin and the modified silica fume are mixed to obtain the concrete composite tackifier. The concrete composite tackifier prepared by the invention has good working performance and antibacterial properties.
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