Fire Performance Testing of Bulkhead Insulation Systems for High Strength to Weight Ship Structures.

摘要

Sixteen insulated aluminum bulkhead specimens were subjected to a material screening process as well as evaluated for their comparative fire performance with a 2-foot horizontal slab furnace. Two insulated and two unprotected glass-reinforced plastic specimens were also tested to obtain fire performance data on these structural materials. In addition,painted aluminum and steel panel specimens were included to determine the fire protective merits of two types of intumescent paints. Potential heat release,smoke,and combustion gas generation were also determined for the insulation and coating materials. Specimens insulated with organic base foams released high levels of combustion gases and could contribute considerable heat to an on-going fire. Specimens insulated with either refractory fibrous material or with mineral wool gave the best overall performance. The same thickness of insulation needed to protect an aluminum panel for over an hour can provide up to 20minutes of protection for a glass-reinforced plastic panel of the same thickness. The intumescent paints did little to protect the specimens during the fire exposure. Parameters of insulation thickness,heat capacity,density,and thermal conductivity as well as fire duration on specimen temperature were analytically investigated.