A coating composition for quickly repairing damaged skin coatings of aircraft

A technology of aircraft and composition, applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of long repair period, non-conductive oxide film, environmental pollution, etc., achieve excellent medium resistance and ensure cross-linking density , Improve the effect of comprehensive performance
CN104387916BActive Publication Date: 2016-08-31CHINA NAT OFFSHORE OIL CORP +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NAT OFFSHORE OIL CORP
Publication Date
2016-08-31

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Abstract

The invention relates to a coating composition for rapidly repairing a damaged skin coat of a spacecraft. The coating composition comprises a component A and a component B, wherein the component A comprises the following components in percentages by mass: 15%-25% of medium-high molecular weight epoxy resin, 2%-12% of modified resin, 15%-30% of conventional-type pigment and filler, 15%-30% of environment-friendly anti-corrosion paint, 0.5%-1% of additive and the balance of the solvent; the component B comprises the following components in percentages by mass: 60%-90% of epoxy-amine adduct, 10%-40% of epoxy-polyaminoalkoxysilane adduct, and the sum of epoxy-amine adduct and epoxy-polyaminoalkoxysilane adduct is 100%; before construction, the component A and the component B are evenly mixed at a mass ratio of (4 to 6): 1. The coating composition has excellent comprehensive performance which is comparable to that of the novel coating system, the repair time is shortened, the repair efficiency is increased, the wastes of energy and resources are decreased and the labor intensity of workers is reduced.
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Description

technical field

[0001] The invention relates to a coating composition for quickly repairing damaged skin coatings of aircraft. Background technique

[0002] Due to the harsh operating environment of aircraft, its skin coating is prone to damage or even peeling off during operation. In order to prevent the exposed skin material from being corroded and affect the life and flight safety of the aircraft, it is necessary to repair the damaged coating. The repair process of the damaged aircraft skin coating includes four steps: ①partial paint removal or slight grinding, ②surface protection treatment, ③spraying protective primer and ④spraying protective topcoat, among which, step ② is the most important step in the repairing process. The quality of the key process directly affects the performance of the whole skin coating system after repair. At present, the methods commonly used in step ② include chemical oxidation surface protection treatment and phosphating primer surface prot...

Claims

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