Journal
POLYMERS
Volume 13, Issue 16, Pages -Publisher
MDPI
DOI: 10.3390/polym13162662
Keywords
expanded polystyrene foam; coating; water-based intumescent flame retardant materials; total heat release
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The study prepared a water-based intumescent flame retardant system and MDI-coated EPS microspheres, showing improved flame retardant performance of EPS foam. Results indicated that the new flame retardant materials effectively reduced the fire risk of EPS foam.
The compatibility and coating ratio between flame retardant materials and expanded polystyrene (EPS) foam is a major impediment to achieving satisfactory flame retardant performance. In this study, we prepared a water-based intumescent flame retardant system and methylene diphenyl diisocyanate (MDI)-coated expandable polystyrene microspheres by a simple coating approach. We investigated the compatibility, coating ratio, and fire performance of EPS- and MDI-coated EPS foam using a water-based intumescent flame retardant system. The microscopic study revealed that the water-based intumescent flame retardant materials were successfully incorporated with and without MDI-coated EPS microspheres. The cone calorimeter tests (CCTs) of the MDI-coated EPS containing water-based intumescent flame retardant materials exhibited better flame retardant performance with a lower total heat release (THR) 7.3 MJ/m(2), peak heat release rate (PHRR) 57.6 kW/m(2), fire growth rate (FIGRA) 2027.067 W/m(2.)s, and total smoke production (TSP) 0.133 m(2). Our results demonstrated that the MDI-coated EPS containing water-based intumescent flame retardant materials achieved flame retarding properties as per fire safety standards.
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