Baljinder Kandola

A series of fiber-reinforced epoxy-composite laminates with different weave structures and area densities was prepared and the effect of reinforcing fiber type and geometry on laminate burning behavior was studied. The epoxy resin curing cycle was determined using differential scanning calorimetry. Cone calorimetry (ISO-5660-1) was used to determine fire performance. Heavy carbon fiber gave the lowest peak heat release rate and shortest burning time. Aramid had a relatively low peak heat release rate and reduced burning propensity in fire, but burned longer. For glass/carbon and glass/aramid hybrid fibers, lay-up orientation affected several properties. The fire growth rate index indicated that aramid was safer than carbon or glass fiber in flame. The glass/aramid hybrid gave better performance than other hybrids.