High-temperature-resistant anticorrosive paint and preparation method thereof

Abstract

The invention discloses high-temperature-resistant anticorrosive paint and a preparation method thereof. The paint comprises finishing paint and a primer which are matched, wherein calculated by mass percentage, the raw-material formula of the finishing paint comprises the following components: 20-30 percent of polyester modified organic silicon resin, 20-40 percent of filler, 30-50 percent of thinner and 0.5-1 percent of auxiliary agent; the filler is the mixture of glass powder, talcum powder, mica powder and carbon black; the raw-material formula of the primer comprises the following components: 10-20 percent of organic-silicon modified epoxy resin, 10-20 percent of phenolic resin, 20-40 percent of primer filler, 30-50 percent of thinner and 0.5-1 percent of auxiliary agent; and the primer filler is the mixture of iron red, mica powder, talcum powder and glass powder. The fillers adopted by the invention have the performances of acid resistance, alkali resistance, heat resistance, fire resistance, insulation and the like, and the obtained paint has the advantages of good weather resistance, high-temperature resistance, small color difference, good anticorrosive performance, good bonding force and low preparation cost.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to a high-temperature-resistant anti-corrosion coating and a preparation method thereof. The coating is mainly used in the preparation of high-temperature-resistant steel. Background technique [0002] High-temperature resistant anti-corrosion coatings are widely used in high-temperature places such as steel chimneys, high-temperature pipes, high-temperature furnaces, petroleum cracking devices, and military equipment to delay thermal oxidation corrosion of metal equipment such as steel at high temperatures and ensure long-term use of equipment. [0003] First of all, the existing anti-corrosion coating products have poor high temperature resistance. In general, the anti-corrosion coating on the existing cold-rolled carbon steel sheet (SPCC) base material is limited to a temperature of 550°C, and interlayer explosion will occur if the temperature exceeds 550°C; and the existing coating o...

AI Technical Summary

Problems solved by technology

[0003] First of all, the existing anti-corrosion coating products have poor high temperature resistance

In general, the anti-corrosion coating on the existing cold-rolled carbon steel sheet (SPCC) base material is limited to a temperature of 550°C, and interlayer explosion will occur if the temperature exceeds 550°C; and the existing coating on the cold-rolled carbon steel sheet is in The anti-corrosion performance in the temperature range of 350°C-450°C is also very poor

Second, the existing high-temperature anti-corrosion paint has poor secondary film-forming performance. After the secondary film-forming at a high temperature of 350°C, it is prone to powder and paint peeling, which seriously affects product quality.

Third, traditional high-temperature-resistant paints are prone to large color differences at high temperatures, silver paints are prone to obvious yellowing, and matte black paints have a large color difference from the factory, making matte black paints lose their luster. Affect the appearance

Fourth, the current commercially available high-temperature anti-corrosion coatings use a relatively high content of resin, resulting in high production costs, which discourages the majority of users.

Images