Effect of PVDC on the Fire Performance of Ultra-Low Density Fiberboards (ULDFs)

Effect of PVDC on the Fire Performance of Ultra-Low Density Fiberboards (ULDFs)

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Poly vinylidene chloride-vinyl chloride emulsions (PVDC) were added as a substitute for chlorinated paraffin (CP) in the preparation of ultra-low density fiberboards (ULDFs).The micromorphology and fire performance of ULDFs were investigated using a scanning electron microscope, limiting oxygen index instrument, and cone calorimeter.The results showed that PVDC specimens were coated with a regularly smooth film, while the distribution of CP inside CP ceiling fan with 18 inch downrod specimens was uneven.The limiting oxygen index increased with the dosage mohair torquay of PVDC, then reached a plateau at 50 mL and 28%, slightly higher than CP specimens (27.

3%).The peak of heat release rate, mean heat release rate, mean CO, and total smoke release of PVDC specimens was reduced 43.3%, 13.5%, 38.

5%, and 51.5% lower than respective CP specimens, and with nearly the same total heat release (only 0.04 MJ/m2 higher).Thus, PVDC exhibited excellent heat-reducing and smoke-suppressing properties and could replace CP in ULDFs.