Weather-proof halogen-free flame retardant insulation polyurea coating

Abstract

The invention relates to a double-component weather-proof halogen-free flame retardant insulation polyurea coating. A halogen-free flame retardant compounded form weather-proof polyaspartic acid resin is adopted as a component A, and a solvent-free polyisocyanate curing agent is adopted as a component B, wherein a ratio of the component A to the component B is (2.5 to 4): 1. The weather-proof halogen-free flame retardant insulation polyurea coating is green and environment-friendly, free of discharge of solvent, high in insulation strength, good in flexibility and resistant to wear and impact, and has the breakthrough voltage being larger than 15kV / mm; the flame retardant is environment-friendly and halogen-free, and has the inflammable level of S2 upon flame retardance according to a DIN5510 standard; meanwhile, the weather-proof halogen-free flame retardant insulation polyurea coating is simple in construction and good in self leveling property, has a smooth surface and wide practical applicability, and is especially suitable for flame retardance and insulation in an pantograph mounting region of an urban rail vehicle.

Description

technical field [0001] The invention relates to a polyurea coating, in particular to a weather-resistant, halogen-free, flame-retardant and insulating polyurea coating. Background technique [0002] In recent years, my country's urban rail transit has made great progress. The fast and comfortable electrified urban rail vehicles have brought earth-shaking changes to people's travel life; On the top of the vehicle, the train is affected by the environment during operation, such as foggy weather, the pantograph and the top of the vehicle will often generate partial discharge, which seriously affects driving safety; The traction chain at the bottom breaks and hangs on the roof of the urban rail vehicle. The direct current of the catenary can burn through the roof, which will cause a major traffic safety accident. Therefore, people think of spraying insulating paint on the pantograph area of ​​urban planning vehicles to improve safety performance. However, the leveling time of th...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a new type of weather-resistant halogen-free flame-retardant insulating polyurea coating that can be highly flame-retardant and does not produce irritating hydrogen halide toxic substances, so as to overcome the shortcomings of the existing additive-type flame-retardant coating technology

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