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Abstract

The present invention provides a black phosphorus quantum dot modified polycarboxylic acid slump retaining agent as well as a preparation method therefor and an application thereof. By using a black phosphorus quantum dot (BPQDs-PEG-SH) with sulfydryl as a chain transfer agent to carry out a redox free radical polymerization reaction with an unsaturated polyether macromonomer and an unsaturated ester small monomer, the polycarboxylic acid slump retaining agent is grafted to a surface of the black phosphorus quantum dot (BPQDs). Compared with the prior art, the method of the present invention has the advantages that the number and length of branched chains are adjusted through the black phosphorus quantum dots with sulfydryl, the product performance is regulated and controlled, the reaction is rapid and highly efficient, no toxicity or pollution is caused, and the operation is simple. The prepared black phosphorus quantum dot modified polycarboxylic acid slump retaining agent has the advantages of retarding performance and stable product performance.

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First Claim