Study on the thermal protection performance of high-performance fiber flame retardant fabric under high radiation heat
In view of the loss of thermal protection properties and mechanical properties of flame retardant fabrics exposed to high radiation heat exposure,the aramid 1313,aramid 1414,polyimide,polybenzene and dioxazole fiber sigle layer and aramid 1313,aramid1414,polybenzene and mixed weaving double-layer fabric of flame retardant performance,thermal stability performance,40 kW/m2 radiant heat flux and the fracture of 20 kW/m2 heat flux.The results show that the single and double-layer fabrics of different materials have good flame retardant performance;Aramid 1313 fabric size change rate about 5%at 260℃,the size change rate of the other fabrics is within 1.5%;Under the radiant heat flux of 40 kW/m2,the radiant heat protection performance of fabric has a great relationship with the material's temperature resistance and fabric structure.The breaking strength loss rate of aramid 1414,PBO and polyimide materials with higher thermal decomposition temperature is less than 10%after radiant heat action.When the interlace interval of the aramid 1313/polybenzene/aramid 1414(20/30/50)double-layer fabric is 1.2 cm×1.2 cm,and the density ratio of the outer layer and the inner layer reaches 1.6∶1,it has a better radiation heat protection value.
high performance fiberfabric structurethermal protection performancethermal stabilityflame retardant performanceair permeability
万方数据
维普
