A kind of high-temperature primer for subway wheels and preparation method thereof

Abstract

The invention relates to a high-temperature primer for metro wheels and a preparation method of the high-temperature primer. The high-temperature primer for the metro wheels is prepared from epoxy modified organic silicon resin as a bonding base material, an anticorrosive pigment and filler, aluminum silver paste, an adjuvant, a solvent A as a paint component, low molecular weight modified polyamide resin, cashew oil phenol-modified aromatic amine resin, 4-6 of tris(dimethylamino methyl) phenol, an adhesion promoter (a silane coupling agent), and a solvent B as a curing agent component in a manner of matching with a proper amount of diluent during construction. The invention mainly aims at developing a high-temperature primer product for metro wheels, which has good overall performance, such as high-efficiency anti-corrosion property, excellent salt spray resistance property, high drying speed, strong adhesive force, good physical and mechanical properties, easiness of construction, good chemical resistance, good high-temperature resistance and the like.

Description

technical field [0001] The invention relates to a high-temperature primer for subway wheels and a preparation method thereof. Background technique [0002] The high-temperature primer for subway wheels is mainly based on pure silicone or acrylic modified silicone resin, adding zinc phosphate, aluminum tripolyphosphate, iron oxide and other traditional inorganic anti-corrosion and anti-rust pigments, supplemented by talcum powder, barium sulfate, etc. Filler, at the same time add an appropriate amount of dispersant, defoamer, leveling agent, rheological additives, etc. and a mixed solvent. With the improvement of high-temperature primers for subway wheels in terms of anti-corrosion, high-temperature resistance, and adhesion performance, there are mainly two types of solutions: one is a high-temperature coating prepared from pure silicone resin, although it has excellent heat resistance, However, the drying performance at room temperature, solvent resistance, and adhesion are...

AI Technical Summary

Problems solved by technology

With the improvement of high-temperature primers for subway wheels in terms of anti-corrosion, high-temperature resistance, and adhesion performance, there are mainly two types of solutions: one is a high-temperature coating prepared from pure silicone resin, although it has excellent heat resistance, However, the normal temperature drying performance, solvent resistance, adhesion, etc. are not ideal; the other type is acrylic modified silicone resin, which is combined with zinc-containing chrome yellow, red lead anti-corrosion pigments and fillers, etc.

Its anti-rust performance is good, but it contains heavy metals, high toxicity, and poor adhesion performance

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