Study On Combustion Characteristics Of Civil Aircraft Cargo Cabin Panel Materials

In recent years,there have been frequent fire incidents in the cargo compartments of civil airliners.In order to study the combustion characteristics and fire hazards of the cargo compartment siding materials of civil airliners,this paper uses Airbus A320 passenger aircraft cargo compartment siding materials and 3240 epoxy/glass fiber composite materials as the research objects.Using cone calorimeter,thermogravimetric analyzer and other instruments to study the influence of heat radiation intensity and ignition mode on the combustion characteristics of materials,the influence of carrier gas atmosphere and heating rate on the pyrolysis characteristics of civil aircraft cargo bulkhead siding materials.The pyrolysis kinetics analysis of Airbus A320 cargo cabin siding material was carried out.It also analyzes the difference in combustion characteristics between Airbus A320 passenger aircraft cargo bulkhead siding material and 3240 type glass fiber/epoxy composite material.Analytic Hierarchy Process was used to comprehensively evaluate the fire risk of the two materials and analyze the differences.The research found that:First,increasing the intensity of heat radiation will cause the material to be more easily ignited,and the smoke generation and heat release performance of the material during the combustion process will be enhanced to varying degrees.The CO and CO₂ content is generated earlier and larger,while the O₂ content is Consume faster and consume more;Compared with 3240 type epoxy board,Airbus A320 aircraft cargo bulkhead has longer ignition time,higher peak smoke production rate and peak heat release rate and later peak time,less CO₂ generation,more CO generation,and O₂ More consumption,less smoke production and total heat release;In the working condition without spark ignition,the material of the cargo bulkhead of Airbus A320 passenger aircraft did not burn with flames.Another,the pyrolysis reaction of Airbus A320 cargo compartment wall materials under air and inert gas is different.The pyrolysis stage,reaction temperature and weight loss rate will all be affected by the gas environment;Changing the heating rate will also have a significant impact on the pyrolysis parameters of the Airbus A320 passenger aircraft cargo bulkhead material;The apparent activation energy of Airbus A320 cargo compartment siding material was obtained by pyrolysis kinetic analysis.Third,the comprehensive fire hazard of the two materials is proportional to the heat radiation intensity.The comprehensive fire hazard of the civil aircraft cargo bulkhead siding material under the same heat radiation intensity is less than that of the 3240 epoxy material.