Abstract
This paper presents results of the experimental research aimed at fire and smoke properties of rolling stock coating system. The overriding research task was to meet current European requirements in the field of fire properties with maintaining the desired performance parameters, such as protective and decorative properties. The research determined parameters such as flame spreading over the surface and heat emission of coating system prepared on steel substrate. Research was carried out to find the optimum thickness of intumescent layer. The tests have shown the effectiveness of use of a protective paint that allows meeting the requirements in the field of fire safety.
Highlights
2 Experimental proceduresCoating systems for the rolling stock must fulfill mechanical, protective and decorative properties maintenance longer on the vehicle
The coating systems for rail vehicles must meet as the minimum, the requirements specified by the HL2 hazard
Thickness of the intumescent layer did not influence the value of the optical smoke density of the coating system at the 4th minute of the test and results obtained were within limits of measurement error
Summary
Coating systems for the rolling stock must fulfill mechanical, protective and decorative properties maintenance longer on the vehicle. These requirements include: adhesion, abrasion resistance, hardness, chemical resistance, resistance to weather conditions (humidity, UV, corrosion). The coating systems for rail vehicles must meet as the minimum, the requirements specified by the HL2 hazard. The thickest layer in the coating systems, applied to the external walls of rail vehicles is a putty. To assess the fire resistance, these fire parameters were selected that characterize the material’s resistance to external fire sources, i.e.: 1) CFE - Critical Flux at Extinguishment, kW/m2 (the lower its value, the greater the fire hazard) according to ISO 5658-2 [6] (Figure 1). The tests were carried out for the thickness from 200 to 1000 μm
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