Preparation method of suspension stabilization type coating mist polycoagulant

Abstract

The invention relates to the technical field of preparation of coating mist polycoagulants and in particular relates to a preparation method of a suspension stabilization type coating mist polycoagulant. The preparation method comprises the following steps: carrying out alkalinization treatment on weathered coal to obtain a cracked sludge suspension; mixing solids and calcium carbonate to obtain humic acid doped montmorillonite; dissolving the humic acid doped montmorillonite and sodium hydroxide powder into distilled water to obtain a reaction solution; then forming a polydopamine film on thesurfaces of modified montmorillonite particles through dopamine hydrochloric acid and a tri-hydroxymethyl aminomethane solution; carrying out heat insulation treatment to obtain the suspension stabilization type polycoagulant. After humic acid is dissolved, the humic acid can be introduced into a surface intercalation of the montmorillonite under the action of quaternary ammonium salt, and the porosity and the interlayer spacing of the montmorillonite are increased, so that the viscosity of coating mist is reduced and preparation is done for subsequent coating mist dross; the modified montmorillonite and a mixed carboxylic acid monomer are subjected to grafted copolymerization reaction, so that the dispersion performance of the coating mist in a waterborne system is easy to improve, watersources are purified and the generation of tank scales is reduced; the preparation method has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of preparation of a paint mist coagulant, in particular to a preparation method of a suspension-stable paint mist coagulant. Background technique [0002] If the equipment is exposed to the air or the external environment for a long time, it is prone to rust or other chemical reactions, which will cause damage to the equipment and affect the service life and function. Therefore, it is necessary to spray paint on the surface or wall of the equipment. [0003] At present, in the spraying process of various car body casings such as automobiles, engines, and various electrical appliance casings, about 30-50% of the paint sprayed by manual or robotic spray guns cannot be sprayed on the casing or is wasted. This part of the wasted paint is generally called overspray paint. Overspray paint will adhere to the pipelines, walls and even the circulation pump of the spray booth circulation system, and cause the circula...

AI Technical Summary

Problems solved by technology

[0010] The main technical problem to be solved by the present invention is that most of the current paint mist coagulants are composed of two components, which need to be added sequentially during use, and the coagulation period is long. The bottom, which makes dredging difficult and corrodes the defects of circulating water equipment, provides a preparation method of suspension stable paint mist coagulant

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