聚对苯二甲酰对苯二胺短纤维在高温下的力学性能

Mechanical Properties of Poly(p-phenylene terephalamide) Staple Fiber at High Temperature

聚对苯二甲酰对苯二胺(PPTA)纤维具有优良的耐热性,通过对进口PPTA短纤维和两种国产PPTA短纤维耐高温性能的研究,探讨在不同温度和停留时间下其力学性能和外观色相的变化情况。结果表明:进口和国产PPTA短纤维耐高温性能相差不大。

Poly（p-phenylene terephalamide） （PPTA） fibers have good heat resistant property. The high tem- perature resistance and impact resistance of an imported PPTA ＂staple fiber and two local made PPTA sta- ple fibers are investigated, the changes of mechanical properties and appearance under different tempera- ture and residence time are discussed. The results show that there is no big difference in temperature re- sistance between imported and local made PPTA staple fibers.