采用热台偏光显微镜技术观察了聚苯硫醚(PPS)及其玻璃纤维、炭纤维及芳纶纤维增强复合材料等温结晶过程中球晶结构形态的变化.研究了等温结晶温度对PPS的晶体形态及球晶生长速率的影响.结果表明,结晶温度对PPS的结晶影响非常明显.在235～265 ℃,随着等温结晶温度的升高,聚苯硫醚球晶形态发生了从细小而具有部分束状结构到大而完善再到细小而不完善的变化过程,球晶的生长速率随着结晶温度的增大呈非线性下降.而纤维的存在使PPS的结晶形态发生了从球晶结构到横穿晶的变化,且不同纤维诱导形成横穿晶的程度有所不同.其中玻璃纤维和芳纶纤维可以诱导形成较为明显的横穿晶形态,而炭纤维则不能诱导形成明显的横穿晶.
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