Preparing method of antirust paint

Abstract

The invention relates to the technical field paint processing, in particular to a preparing method of antirust paint. A grinding tank used in the method comprises a tank body, grinding plates and a rotating shaft. A support is arranged at the bottom of the tank body. The grinding plates are located in the tank body, and include the upper and lower grinding plates installed in the tank body. Sinceantirust pigments in the antirust paint contain metal solid components, when the solid components in the antirust pigments are smashed and mixed into color paste, the high temperature is generated onthe surface of a tool which performs rotating and cutting at a high speed, a chelating agent in the color paste is partly hydrolyzed, performance is broken, and then the preparing quality of the antirust paint is affected; thus, by replacing the cutting tool with the grinding plates, it is avoided that the generated high heat damages the stable chemical properties of the chelating agent in the color paste when the tool performs rotating and cutting at a high speed; and meanwhile, the two grinding plates perform rough grinding and fine grinding on the antirust pigments correspondingly, so thatthe grinding efficiency is improved, and the preparing quality of the antirust paint is maintained.

Description

technical field [0001] The invention relates to the technical field of paint processing, in particular to a preparation method of an antirust paint. Background technique [0002] Anti-rust paint is a coating that can protect metal surfaces from chemical or electrochemical corrosion of the atmosphere, sea water, etc.; it is mainly divided into two categories: physical and chemical anti-rust paints; the former depends on the proper combination of pigments and paints. Form a dense paint film to prevent the intrusion of corrosive substances, such as iron red, aluminum powder, graphite anti-rust paint; the latter relies on the chemical anti-rust effect of anti-rust pigments, such as red lead, zinc yellow anti-rust paint; used for bridges , ships, pipeline metal rust. [0003] At present, in the preparation of antirust paint, phytate is usually used as the main component of the chelating agent. In the preparation process of antirust paint, the solid components in the antirust pig...

AI Technical Summary

Problems solved by technology

[0003] At present, in the preparation of antirust paint, phytate is usually used as the main component of the chelating agent. In the preparation process of antirust paint, the solid components in the antirust pigment need to be fully broken into the antirust paint, especially the physical The metal solid components in the permanent anti-rust paint, and the violent interaction with the solid components when the tool is cut and broken, produces a local temperature rise, which in turn destroys the chemical stability of the chelating agent. The main component of the chelating agent is inositol six Phosphate begins to undergo hydrolysis reaction at 60°C, and it is completely hydrolyzed at 100°C, losing its role as a chelating agent, which affects the preparation quality of antirust paint

[0004] There have also been some processing technology solutions for environmentally friendly antirust paints in the prior art. For example, a Chinese patent with application number 2015105912751 discloses a water-based antirust paint and a preparation method thereof. The mass parts of the raw materials are as follows: acrylic modified 600-700 parts of non-toxic alkyd resin emulsion, 100-120 parts of deionized water, 90-110 parts of pigment and filler, 5-10 parts of rheological agent, 5-10 parts of dispersant, 1-5 parts of defoamer, fungicide 1-3 parts, 70-90 parts of film-forming aid, 15-25 parts of cosolvent, 3-8 parts of flash rust agent, 5-10 parts of multifunctional additive, 4-10 parts of thickener solution; the process steps include Dispersion, grinding, paint mixing, thickening, filtering and packaging; this technical solution uses water as the dispersion medium, and the bottom and surface are integrated into one construction, which breaks the traditional mode of separate construction of the bottom and surface of the paint, and has good water resistance. It has the advantages of good anti-rust function at high temperature; however, this technical solution does not consider the local high temperature generated when the tool cuts at high speed and stirs anti-rust pigments and fillers during the anti-rust paint preparation process. The stability of the permanent alkyd resin component causes damage, which affects the preparation quality of the anti-rust paint, making the performance of the anti-rust paint prepared by this technical scheme not stable enough

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