Fire-Protective Coating for Extruded Foam Polystyrene

Fire-Protective Coating for Extruded Foam Polystyrene 

Extruded foam polystyrene (EFPS) is used in construction as heat insulation material, leave-in-place forms, and so on. However, insufficient temperature resistance prevents its widespread use as a structural building material. 

EFPS samples measuring 135 x 70 x 20 mm were coated with the S ASB composition for indoor application. All sides were coated with two layers of total thickness of 2-2.5 mm with level-by-level drying in the furnace at a temperature of 60°C for 4 hours. Before the tests began, the samples were incubated for 24 hours at room temperature and humidity. 

FIGURE 8.4 Dependence of the temperature measured inside the EFPS samples on heating time (1) sample coated by composition S ASB for indoor application, (2) sample without coating, (3) temperature in the furnace. 

FIGURE 8.5 The EFPS samples (a) sample without coating, (b) sample with coating, 

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