空客320货舱衬板复合材料的热解和燃烧特性

Characteristics of Pyrolysis and Combustion of Airbus 320 Cargo Hold Lining Composite

使用热重分析仪和锥形量热仪在相同条件下分析对比两种试验材料空客320货舱衬板(玻璃纤维/酚醛树脂)和3240玻纤板-FR4(玻璃纤维/环氧树脂)的热解和燃烧特性。试验结果表明:空客320货舱衬板和3240玻纤板-FR4的热解分为4个和3个阶段,货舱衬板的初始热分解温度、点燃时间及燃烧时长均小于3240玻纤板-FR4。3240玻纤板-FR4的有烟时间、产烟率(RSR)及总产烟量(TSR)大于货舱衬板,且产烟率(RSR)及总产烟量(TSR)分别是货舱衬板的2倍、3.45倍;3240玻纤板-FR4的热释放速率(HRR)及总热释放量(THR)大于货舱衬板,且热释放速率峰值(pk-HRR)及总热释放量(THR)分别是货舱衬板的1.47倍、1.94倍。故空客320货舱衬板在火灾发生后对人的生命安全及飞机的运行安全危险性小。

The pyrolysis and combustion characteristics of Airbus 320 cargo hold liner(fiberglass/phenolic resin)and 3240 fiberglass board-FR4(fiberglass/epoxy resin)were analyzed and compared by thermal gravimetric analyzer and cone calorimeter under the same conditions.The results show that the pyrolysis of Airbus 320 cargo hold liner and 3240 fiberglass board-FR4 can be divided into four and three stages,and the initial thermal decomposition temperature,ignition time and combustion duration of the cargo hold liner are all less than that of 3240 fiberglass board-FR4.The smoke time,release smoke rate(RSR)and total smoke release(TSR)of 3240 fiberglass board-FR4 are higher than the cargo hold liner,and the release smoke rate(RSR)and total smoke release(TSR)are 2 and 3.45 times higher than the cargo hold liner.The heat release rate(HRR)and total heat release(THR)of 3240 fiberglass board-FR4 are greater than that of cargo hold liner,and the peak heat release rate(pk-HRR)and total heat release(THR)of 3240 fiberglass board-FR4 are 1.47 and 1.94 times of cargo hold liner.Therefore,the Airbus 320 cargo hold liner is less dangerous to human life and aircraft operation safety after a fire.