To give full play to the good performance of polyphenylene sulfide (PPS) fiber, electron beam irradiation was used to promote the property of the PPS fiber. The fibers were irradiated at different doses, and changes in structure and property of PPS fibers were analyzed by X-ray diffraction, moisture regain, heat resistance and thermo-gravimetric analysis. The strength of the specimen increased from 3.75 cN dtex to 3.88 cN dtex at 10 kGy and then decreased. And the elongation of the irradiated fibers decreased after irradiation. The crystalline shape of the fibers did not change and the crystallinity increased from 57.3% to 59.4% and then decreased. Irradiation had the good effect on moisture regain and heat resistance. The moisture regain of PPS fibers increased from 0.28% to 0.74% after 60 kGy irradiation which was 2.6 times of the initial fibers. After heating at 150 °C for 2 h in an oven, the mass loss ratio of the fibers decreased from the original 9.96%–4.97% at 10 kGy dose which was helpful to the application of PPS fiber in high-temperature fields. At the same time, it could be seen from TG data that the maximum loss rate temperature of fibers rose from the initial 526.6 °C–532.7 °C.

中文翻译：

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基于电子束辐照的聚苯硫醚纤维性能提升

为了充分发挥聚苯硫醚(PPS)纤维的良好性能，采用电子束辐照的方法来提升PPS纤维的性能。对纤维进行不同剂量的辐照，通过X射线衍射、回潮率、耐热性和热重分析分析PPS纤维结构和性能的变化。 10 kGy 下样品的强度从 3.75 cN dtex 增加到 3.88 cN dtex，然后下降。并且辐照后纤维的伸长率下降。纤维的晶形没有变化，结晶度从57.3%增加到59.4%，然后下降。辐照对回潮率和耐热性有良好的效果。经过60 kGy辐照后，PPS纤维的回潮率从0.28%增加到0.74%，是初始纤维的2.6倍。在150℃烘箱中加热2h后，在10kGy剂量下，纤维的质量损失率由原来的9.96%下降到4.97%，有利于PPS纤维在高温领域的应用。同时，从TG数据可以看出，纤维的最大损耗率温度从最初的526.6℃上升至532.7℃。