| 초록 |
In the architectural field, flame retardant properties are important factors in the safety aspect. In this study, graphene nanoplatelet (GnP)/phenolic foam (PF)/wood composite boards were fabricated with different GnP contents to investigate the effect of GnP on the flame retardant properties of wood-based composite board. Thermogravimetric analysis (TGA) was conducted under air and N2 atmosphere to evaluate thermal properties. Flame retardant properties were investigated by limiting oxygen index (LOI) test. As a result, the initial decomposition temperature of composite board increased with the GnP content. The char yield also increased up to 22% when GnP was added, whereas char yield of pure wood board and PF was 1%, respectively. In addition, the LOI value of composite boards increased up to 8% compared to pure wood board. These results are attributed by higher char yield, which prevents contact with oxygen and delays the combustion of composite boards. |
