聚苯硫醚纤维与聚醚砜纤维的结构与性能

The Structure and Performance of Polyphenylene Sulfide and Polyether Sulfone Fiber

分别以聚拳硫醚（PDS）、聚醚砜（PES）切片为原料，在一位4头的熔融纺丝实验机上，制备了PPS及PES纤维，并对两者结构与性能的差异进行比较。结果表明：PPS和PES的初生纤维都具有光滑的表面，PES的流动性能比PPS差，表观黏度也比PPS要大；PPS纤维的玻璃化转变温度为90—100℃，结晶温度为130．09℃，熔融温度为279．56℃，初始热分解温度为500℃，半寿温度为625℃；PES纤维的玻璃化转变温度为225cc，初始热分解温度为460℃，半寿温度为600℃，没有结晶温度和熔融温度；PPS纤维为半结晶聚合物，结晶速率为0．045s^-1，而PES纤维属于无定形或极低结晶度材料；PES纤维和PPS纤维都具有优异的热稳定性和阻燃性，都非常适合应用在阻燃及耐高温场合。

Using polyphenylene sulfide（PPS）, polyether sulfone（PES） slices as raw materials, the differences in structure and performance of PPS and PES fibers prepared in a four head melt spinning experimental machine are compared. The results show that PPS and PES as-spun fibers have smooth surface, the fluidity of the PES is worse than that of PPS, and the apparent viscosity of PES fiber is bigger than that of PPS fiber. PPS fiber has a glass transition temperature of 90-100 ℃, a crystallization temperature of 130.09 ℃, a melting temperature of 279.56 ℃, an initial decomposition temperature of 500 %, and a half life temperature of 625 ℃. Whereas PES fiber has a glass transition temperature of 225 ℃, an initial decomposition temperature of 460 ℃, a half life temperature of 600 %, and no crystallization or melting temperature. PPS fiber is a semi-crystalline polymer, with a crystallization rate of 0.045 s-l, PES fiber belongs to non-crystalline materials. PES and PPS fibers both have excellent thermal stability and fireretardancy, and therefore they are very applicable to be used in fire-retardant and high-temperature situations.