Preparation method of antirust paint for metal doors and windows

Abstract

The invention provides a preparation method of an antirust paint for metal doors and windows. The preparation method comprises the following steps of a, mixing modified alkyd resin, an isocyanate compound, an asphalt solution, an acrylic acid emulsion and a defoaming agent, and guiding into a dispersing machine to disperse, so as to obtain a dispersantdispersed material; b, mixing a vinyl monomer,a filler, modified zinc phosphate, aluminum triphosphate, a talcum powder, precipitated barium sulfate and zinc oxide, guiding into a ball milling machine, and performing ball milling, so as to obtain a grinding material; c, mixing the dispersantdispersed material and the grinding machine, adding deionized water, a rubber liquid, an initiator and a salting agent, guiding into a reaction kettle, and heating, so as to obtain a mixture I; d, adding an antirust additive, a color paste and a thickener into the mixture I, guiding into a stirring machine to stir, and dewatering. The prepared antirust paint has the advantages that the adhesion force is high, the gloss is good, the toxicity and odor are avoided, the environment-friendly and safe effects are realized, and the antirust paint can bewidely applied to various types of metal.

Description

technical field [0001] The invention belongs to the technical field of antirust paint, and in particular relates to a preparation method of antirust paint for metal doors and windows. Background technique [0002] Metal is prone to rust when placed outdoors or in the open air. Rust is a chemical reaction, which is essentially an oxidation reaction of metal. Metal rust not only affects the appearance quality, but also affects the normal progress of painting, bonding and other processes. Rust seriously affects the operation of the follow-up process and the quality of the product. If it is not treated in time, the material will be scrapped and unnecessary economic losses will be caused. Therefore, it is necessary to derust the metal. The existing rust removal methods generally use chemical rust removal, mainly using strong acid solution or strong alkali solution to oxidize the rust, so as to achieve the effect of rust removal, but if the amount used is insufficient during use, ...

AI Technical Summary

Problems solved by technology

[0002] Metal is prone to rust when placed outdoors or in the open air. Rust is a chemical reaction, which is essentially an oxidation reaction of metal. Metal rust not only affects the appearance quality, but also affects the normal progress of painting, bonding and other processes. Rust seriously affects the operation of subsequent processes and the quality of products. If it is not treated in time, it will cause scrapping of materials and unnecessary economic losses. Therefore, it is necessary to derust metal

The existing rust removal methods generally use chemical rust removal, mainly using strong acid solution or strong alkali solution to oxidize the rust, so as to achieve the effect of rust removal, but if the amount used is insufficient during use, the rust removal will not be clean , Excessive dosage will corrode the metal, and the volatility of strong acid and strong alkali solution is too large, the efficiency of rust removal is low, and the secondary rust time of metal after rust removal is short

[0003] The surface of the current metal products or metal recycling products will produce rust spots or stains of different sizes, which not only affects the appearance, but also is not conducive to subsequent mechanical processing and production

The commonly used rust removal method is to use acidic solvents to remove rust spots or stains. However, in the rust removal process, if the rust removal time is not well controlled, either the rust removal is not complete, or the rust removal time is too long and the base material is corroded. Produce traces on the surface of metal products and damage the metal products themselves

In addition, during the rust removal process using acidic solvents, the acidic solvents will volatilize and produce smoke, and at the same time, industrial waste will be produced, which will have a certain impact on the health of workers