Cationic monomer with benzene ring, air-entraining type anti-mud agent for polycarboxylate superplasticizer using cationic monomer and preparation method of air-entraining type anti-mud agent

Abstract

The invention discloses a cationic monomer with a benzene ring, an air-entraining type anti-mud agent for a polycarboxylic acid water reducer using the cationic monomer and a preparation method of the air-entraining type anti-mud agent. The cationic monomer with the benzene ring is formed by polymerizing p-phenol, a straight-chain alkyl halide and an amine monomer; according to the invention, the cationic monomer with the benzene ring, the polyether chain with the benzene ring and formaldehyde are subjected to condensation polymerization under certain conditions to obtain the air-entraining type anti-mud agent for the polycarboxylate superplasticizer. The air-entraining type anti-mud agent for the polycarboxylic acid water reducer is a product with a novel structure, not only has relatively strong anti-mud performance, but also has certain air-entraining performance, and can show relatively good adaptability with a water reducer, a slump retaining agent, a retarder and the like.

Description

technical field [0001] The invention relates to a cationic monomer with a benzene ring, an air-entraining mud-resistance agent for a polycarboxylate water reducer using the cationic monomer and a preparation method thereof, belonging to the field of concrete admixtures. Background technique [0002] Polycarboxylate superplasticizer, as the third generation superplasticizer, has the advantages of high water reducing rate and good slump retention performance, and is used more and more in engineering. [0003] In recent years, due to the increase of infrastructure projects in our country, the demand for sand and gravel as the largest raw material in concrete has also increased. However, due to the widespread use of machine-made sand and the decline in the quality of sand and gravel materials, the sand and gravel materials contained Clay, especially montmorillonite, will form a competitive relationship with cement and preferentially absorb water reducing agents, resulting in a r...

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Problems solved by technology

[0004] Clay can absorb a large amount of polycarboxylate superplasticizer, which leads to the increase of polycarboxylate superplasticizer in use and the problem of unstable performance. Therefore, for polycarboxylate superplasticizer in concrete with high mud content show poor adaptability, the invention provides a cationic monomer with a benzene ring, and an air-entraining anti-mud agent for a polycarboxylate water reducer using the same and a preparation method thereof

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