Fire-retardant coating, high-temperature resistant paint
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What is the difference between fireproof coatings (such as thick-coat fireproof coatings for steel structures) and high-temperature resistant paints (silicone heat-resistant topcoats capable of withstanding 600°C)? If a high-temperature resistant paint (silicone heat-resistant topcoat capable of withstanding 600°C) is applied, is it then unnecessary to use fire-retardant paint? Or, if fire-retardant paint is used, is it then unnecessary to apply a high-temperature resistant topcoat? Even when the ambient temperature is high. Must a topcoat be applied after the pipe rack has been coated with fire-resistant paint?
This question is quite technical. The simplest approach is to consult the product specifications provided by the paint supplier, or to review the construction plan submitted by the construction party. To understand it better, one needs to study some technical materials on painting, especially those related to new technologies and new information. Please have an expert in this field explain it
I think you’ll understand now: when a petrochemical plant catches fire, the flame temperature is typically above 1500°C. The common practice in such cases is to use an inner coating followed by an outer coating. As for using a high-temperature resistant topcoat, I don’t think it’s necessary, because even if the outer fire-resistant coating fails, a high-temperature resistant topcoat won’t provide much protection either. Additionally, if the ambient temperature is high and high requirements exist for the corrosion protection of steel structures, high-temperature resistant paints can be considered, but it is necessary to determine whether they are flammable materials.