A coating for metal materials with high water resistance and preparation method thereof

Abstract

The invention relates to a coating for metal materials with high water resistance and a preparation method thereof. The coating comprises the following components in parts by mass: 30-50 parts of modified acrylic resin, 5-10 parts of polypropylene, and 10-15 parts of polyether polyol , 10-15 parts of methyl methacrylate, 3-5 parts of nano-bentonite, 3-8 parts of titanium dioxide, 4-6 parts of dispersant, and 0.5-1 part of defoamer. Compared with the prior art, the invention has good hydrophobicity, high hardness, long service life, extremely high water resistance, and excellent performance on metal materials.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a coating for metal materials with high water resistance and a preparation method thereof. Background technique [0002] Coatings play a very important role in production and life, and are widely used in various fields. The coating film formed by coatings can decorate, protect and mark objects. [0003] Although most of the coatings currently on the market are simple to make and cheap in price, they have a single function and can only be used for decoration. In some special working environments, simple coatings cannot meet people's needs. . With the massive construction of railways, highways, urban subways, etc., the amount of waterproofing projects is huge. In these construction projects, in order to prevent the materials or semi-products exposed to the atmosphere from being polluted, corroded and damaged, and prolong their service life, they are usually coated with good protective coa...

AI Technical Summary

Problems solved by technology

[0004] However, the existing water-based protective coatings have insufficient waterproofness and strength, poor hydrophobicity, hardness and service life, low water resistance, and poor adhesion to metal materials.

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