Comparison of thermal stability and combustibility between PI and PPS needle punched fabrics

Thermal analysis,limited oxygen index and cone calorimetry were used to compare the thermal stability and combustibility between polyimide(PI) and polyphenylene sulfide(PPS) needle punched fabrics.The results show that the decomposition temperature of PI and PPS needle punched fabrics is 580 ℃ and 500 ℃ respectively,LOI is 40% and 35%,ignition time is 38 s and 32 s,the maximum of heat release rate reaches 62.6 kW/m2 and 130.9 kW/m2,and the smoke factor is 12 MW/m2 and 35 MW/m2.By the comparison of these factors,a conclude that PI needle punched fabric is better than PPS in terms of thermal stability and combustibility is made.