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3. Expanded Polystyrene Beads Coated with Intumescent Flame Retardant Material to Achieve Fire Safety Standards

Author

Sawanta S. Mali, Pravin H. Bhoite, Sangram P. Bhoite, Jonghyuck Kim, Wan Jo, Kyu-Hwan Park, and C. K. Hong

Subjects
Materials science, Polymers and Plastics, Methylene diphenyl diisocyanate, Organic chemistry, Fire safety, engineering.material, Article, chemistry.chemical_compound, fluids and secretions, QD241-441, Coating, Cone calorimeter, Composite material, reproductive and urinary physiology, Smoke, coating, General Chemistry, Fire performance, humanities, total heat release, chemistry, expanded polystyrene foam, engineering, water-based intumescent flame retardant materials, Intumescent, Fire retardant
Abstract

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/m2, peak heat release rate (PHRR) 57.6 kW/m2, fire growth rate (FIGRA) 2027.067 W/m2.s, and total smoke production (TSP) 0.133 m2. Our results demonstrated that the MDI-coated EPS containing water-based intumescent flame retardant materials achieved flame retarding properties as per fire safety standards.

Published
2021

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