A kind of coating system for aircraft

Abstract

The invention relates to a coating system for an aerial aircraft. The coating system consists of an anti-corrosion coloring bottom coating and a weather-resistant transparent surface course coating matched in use, wherein the bottom coating consists of a component A1 and a component B1 in a mass ratio of (4-6): 1 and the surface course coating consists of a component A2 and a component B2 in a mass ratio of (1-4): 1; the component A1 comprises 15-30% of hydrogenated terpinene-maleic ester type epoxy resin, 2-10% of modified resin, 10-20% of coloring pigments, 10-20% of an environment-friendly anti-corrosion pigment, 5-15% of filler, 0.5-1% of auxiliaries and the balance of a solvent; the component B1 comprises 3-15% of liquid epoxy resin, 5-25% of polyamine with a primary amine and the balance of a solvent; the component A2 comprises 50-80% of polyhydric alcohol resin, 1-4% of auxiliaries and the balance of a solvent; and the component B2 comprises 60-90% of aliphatic polyisocyanate and the balance of a solvent. The coating system is light, good in comprehensive performance and time-saving in construction.

Description

technical field [0001] The invention relates to a paint system for aircraft, in particular to a paint system for aircraft with longer color and lighter weight. Background technique [0002] At present, conventional paint systems for aerospace vehicles are composed of anti-corrosion primers and colored top coats. Usually, the dry film thickness of the bottom layer formed by the primer paint ranges from about 15 to 25 μm, and the dry film thickness of the surface layer formed by the top coat paint ranges from about 50 to 80 μm. Although the performance of aerospace coatings formed by conventional coating systems can basically meet the needs of various types of aircraft, there are still the following problems: ①Because both the primer coating and the top coating contain a large amount of pigments and fillers with high density, conventional coatings The aircraft coating formed by the system is heavy, which increases the weight of the aircraft and thus increases the fuel consump...

AI Technical Summary

Problems solved by technology

Although the performance of aerospace coatings formed by conventional coating systems can basically meet the needs of various types of aircraft, there are still the following problems: ①Because both the primer coating and the top coating contain a large amount of pigments and fillers with high density, conventional coatings The aircraft coating formed by the system is heavy, which increases the weight of the aircraft and thus increases the fuel consumption of the aircraft; ②In order to obtain a high-gloss and smooth surface for each coating, the drying process of the coating must be slowed down, and it takes about 5 ~7 hours, therefore, the construction interval is long, and at the same time, due to the thick dry film thickness of the surface layer, it must go through two constructions to reach the specified thickness, so the overall coating efficiency is low; ③Due to the gloss of the final aircraft coating The degree and color presentation are directly related to the coating effect of the surface coating. Therefore, once defects such as orange peel, sagging, pinholes, and sandy surfaces appear on the surface, the glossiness of the final aircraft coating will be greatly reduced. At the same time, the accuracy of its color rendering will also be affected. Therefore, there are strict requirements on the quality of the coating; ④Since the surface layer is in direct contact with the atmospheric environment, it is easily pulverized due to long-term erosion by ultraviolet light, oxygen in the air and rainwater , loss of gloss, while the surface gloss retention rate and color durability of conventional coating systems are relatively poor

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