Preparation method of flame-retardant composite over-rust antirust paint

Abstract

The invention discloses a preparation method of a flame-retardant composite over-rust antirust paint, belonging to the technical field of antirust paint preparation. The preparation method comprises the following steps: drying and pulverizing tung seeds and Maofeng, mixing with lime water to regulate the pH value, standing, filtering, airing the filter residue, adding distilled water, grinding into slurry, heating to keep the temperature under ultrasonic actions, mixing with n-hexane, filtering to obtain the filtrate while keeping the temperature, stirring and mixing with hectorite, talcum powder and the like, adding zinc oxide, keeping the temperature, respectively adding polyurethane, iron oxide and barium sulfate, stirring and mixing, and keeping the pressure, thereby obtaining the flame-retardant composite over-rust antirust paint. The method has the advantage of simple preparation steps. The obtained product has the advantages of favorable adhesive force, favorable uniformity and compactness, favorable flowability, high shock strength (greater than 50kg.cm) and high hydrolysis resistance. After being immersed in water for 140-145 hours, the paint film does not shed or discolor, and does not generate the bubble phenomenon; the water resistance, alkali resistance, rust resistance and flame retardancy are effectively enhanced; and the paint film can resist the high temperature of 130 DEG C for 6080-7100 hours.

Description

technical field [0001] The invention relates to a preparation method of a flame-retardant composite anti-rust paint with rust, belonging to the technical field of anti-rust paint preparation. Background technique [0002] Antirust paint is a coating that protects metal surfaces from chemical or electrochemical corrosion from the atmosphere, sea water, etc. Mainly divided into two categories of physical and chemical antirust paint. The former relies on the proper coordination of pigments and paints to form a dense paint film to prevent the intrusion of corrosive substances, such as iron red, aluminum powder, graphite antirust paint, etc.; the latter relies on the chemical antirust effect of antirust pigments, such as red Dan, zinc yellow antirust paint, etc. Used for rust prevention of bridges, ships, pipelines and other metals. Corrosion of metals is very common. The loss caused by metal corrosion not only damages the metal material itself in terms of its shape, color an...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention: the current anti-rust paint has poor adhesion, severe paint film shedding, weak hydrolysis resistance, easy fading and bubble generation, poor uniformity and density, and poor fluidity, resulting in its water resistance, alkali resistance and corrosion resistance. The drawback of the reduced anti-rust and flame-retardant ability provides a method of drying and crushing tung seeds and Maofeng, mixing them with lime water, adjusting the pH, standing and filtering to get the filter residue to be air-dried, adding distilled water for grinding, and heating and heat preservation under ultrasonic waves. The filtrate is obtained by mixing n-hexane with heat preservation and filtering, stirring and mixing with hectorite and talcum powder, adding zinc oxide for heat preservation, adding polyurethane, iron oxide and barium sulfate, stirring and maintaining pressure to obtain a flame-retardant composite anti-rust paint with rust

The preparation steps of the invention are simple, and the obtained product has good adhesion, uniform density and fluidity, effectively solves the problem of serious shedding of the anti-rust paint film, weak hydrolysis resistance, easy fading and generation of bubbles, water resistance, alkali resistance and rust prevention The problem of reduced flame retardancy