Crosslinked vinyl acetate-acrylic block copolymer emulsion type dust suppressant and preparation method thereof

Abstract

The invention provides a crosslinked vinyl acetate-acrylic block copolymer emulsion type dust suppressant and a preparation method thereof. The cross-linked vinyl acetate-acrylic block copolymer emulsion type dust suppressant takes vinyl acetate and acrylic acid as monomers, takes potassium persulfate and / or ammonium persulfate as an initiator, takes OP10 as an emulsifier, takes an F21312 type efficient dispersing agent as a dispersing agent, takes a J21312 type efficient cross-linking agent as a dispersing agent, and is prepared through an emulsion polymerization method. The cross-linked vinyl acetate-acrylic block copolymer emulsion type dust suppressant disclosed by the invention has better water solubility and storage stability, can be used for effectively preventing a spray head from being blocked when being sprayed and applied, and has better use performance and better use effect.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a cross-linked vinyl acetate-acrylic acid block copolymer emulsion type dust suppressant. The invention also relates to a preparation method for preparing the cross-linked vinyl acetate-acrylic acid block copolymer emulsion type dust suppressant. Background technique [0002] With the development of industry and the improvement of people's living standards, environmental protection and effective use of resources have become the focus of global attention. Dust pollution is one of the world's public hazards. The dust pollution caused by open dusty sites such as various municipal engineering sites, material storage yards, demolition sites and other bare grounds has greatly endangered people's normal life and health, and destroyed the ecological environment. environment. [0003] For this reason, people adopt various dust suppression methods to improve the p...

AI Technical Summary

Problems solved by technology

However, because there is no strong force between the molecules of each functional component, the film is relatively fragile, and it is easily broken by the destructive effects in the environment (such as wind, rain, sun, frost, mechanical rolling, etc.) Dust suppression effect

That is to say, the effective time of dust suppression is shorter, and the frequency of re-spraying is higher

[0004] In addition, with the development of science and technology, a polymer dust suppressant has been developed in the prior art. Although the polymer dust suppressant solves some of the above problems, the functional groups of the effective components are integrated into the polymer In the chain, the toughness of film formation is greatly improved, and the effective time of action is greatly improved, but there are still some shortcomings: first, the distribution of hydrophilic groups in the polymer is not uniform or the proportion of the number is not high enough, which may cause the polymer solution to easily Precipitation occurs during storage, or nozzles are blocked during spraying; second, most polymer dust suppressants are linear polymers, and there are hydrophilic groups in the molecules, so the water resistance of film formation is poor; the third is the performance of film formation Relying on the intermolecular force, when the temperature is low, the film becomes brittle, easy to damage and fail

Images