Polyphenylene sulfide (PPS) finds extensive applications in the automotive industry, aerospace electrical, and electronic components, as well as mechanical applications. In order to enhance the toughness and strength of PPS, this study employed long glass fibers as reinforcement material and prepared glass fiber-reinforced polyphenylene sulfide composites (PPS/GF) using melt blending method. Based on fiber length distribution (FLD), this study comparatively analyzed the mechanical and thermal properties of short-cut glass fiber (PPS/SGF3mm) and continuous glass fiber (PPS/LGF) composites. Experimental results demonstrated that with a 5.45% increase in critical fiber length fraction, the tensile strength of PPS/LGF composites exhibited a significant improvement of 11.25%–13.6% compared to PPS/SGF3mm composites. Furthermore, FLD had minimal influence on the thermal stability of the composites, but exerted a significant impact on the crystallization behavior, whereby LGF led to a significant reduction in the crystallinity of PPS composites. These findings suggest that the utilization of continuous glass fibers enables the development of cost-effective and robust PPS composites, meeting the requirements of high strength and high temperature resistance in engineering applications. This study provides valuable insights for material selection and design.

中文翻译：

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纤维长度对玻璃纤维增​​强聚苯硫醚复合材料力学和热性能的影响

聚苯硫醚 (PPS) 在汽车工业、航空航天电气和电子元件以及机械应用中有着广泛的应用。为了提高PPS的韧性和强度，本研究采用长玻璃纤维作为增强材料，采用熔融共混方法制备了玻璃纤维增​​强聚苯硫醚复合材料（PPS/GF）。本研究基于纤维长度分布（FLD），对比分析了短切玻璃纤维（PPS/SGF）的力学性能和热性能3毫米）和连续玻璃纤维（PPS/LGF）复合材料。实验结果表明，随着临界纤维长度分数增加5.45%，PPS/LGF复合材料的拉伸强度较PPS/SGF显着提高11.25%~13.6%3毫米复合材料。此外，FLD对复合材料的热稳定性影响很小，但对结晶行为产生显着影响，其中LGF导致PPS复合材料的结晶度显着降低。这些发现表明，使用连续玻璃纤维可以开发出经济高效且坚固的 PPS 复合材料，满足工程应用中高强度和耐高温的要求。这项研究为材料选择和设计提供了宝贵的见解。