Abstract
In this study, plastics such as glass fiber reinforced plastic (GFRP), polystyrene (PS), polycarbonate (PC), polypropylene (PP), polyvinyl chloride (PVC) were selected, and the fire risk associated with them was investigated using a cone calorimeter, as per ISO 5660-1. These values were measured to comprehensively predict the fire risk by Chung’s equations- Ⅱ. Standard materials (PMMA) were used to standardize the fire hazard assessment, and the fire risk was classified and evaluated by new Chung’s equations-III and Chung’s equation-IV. The fire performance index-II of Chung’s equations-Ⅱ showed that PVC had the highest FPI-II of 32.04 s<sup>2</sup>/kW, whereas PS had the lowest FPI-Ⅱ of 0.07 s<sup>2</sup>/kW. From the viewpoint of FGI-Ⅱ, the lowest fire growth index-Ⅱ was 0.09 kW/s<sup>2</sup> for PVC, and the highest fire growth index-Ⅱ for PS was 3.41 kW/s<sup>2</sup>. The FPI-Ⅲ of Chung’s equations-Ⅲ had the lowest fire performance index-Ⅲ for PS (0.02) and highest fire performance index-Ⅲ for PVC (89). The FGI-Ⅲ had the highest fire growth index-Ⅲ of 20.1, and PS and PVC were found to be the safest materials with an FGI of 0.5. The FRI-Ⅳ of Chung’s equation-Ⅳ was in the following order: PS (100.5) ≫ PP (2.43) > PC (1.12) > PMMA (1.0) > FRP (0.19) > PVC (0.01). Therefore, it was concluded that the fire risk associated with PVC is lowest, whereas that associated with PS is highest.
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