This paper presents the fabrication and characterization of high-performance carbon nanotube-polyphenylene sulfide (CNT-PPS) composite fibers. The study begins by dissolving PPS in chlorosulfonic acid (CSA) to create dopes suitable for wet-spinning, enabling the formation of CNT-PPS composite fibers. The presence of PPS, known for its low solubility and high crystallinity, leads to improved mechanical properties and thermal stability after carbonization. The structural evolution of the fibers during heat treatment is examined. The results show that the fibers' tensile strength and modulus increase significantly after carbonization, with the highest tensile strength (6.04 ± 0.50 GPa) achieved by the fiber containing 30 wt% of PPS heat-treated at 1400 °C and the highest tensile modulus (619 ± 44 GPa) achieved by the fiber containing 10 wt% of PPS heat-treated at 2500 °C. The mechanism of radical coupling between CNTs and PPS during de-sulfonation is proposed as a key factor contributing to the enhanced mechanical properties. The study also highlights the benefits of using PPS as a carbon fiber precursor, eliminating the need for costly and time-consuming stabilization processes. Overall, this research offers a novel strategy for producing high-performance and cost-effective carbon nanotube-based carbon fibers with applications in various industries.

中文翻译：

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通过磺化聚对苯硫醚和碳纳米管的协同碳化工艺生产高强度碳纤维

本文介绍了高性能碳纳米管-聚苯硫醚（CNT-PPS）复合纤维的制备和表征。该研究首先将 PPS 溶解在氯磺酸 (CSA) 中，形成适合湿纺的原液，从而形成 CNT-PPS 复合纤维。 PPS 以其低溶解度和高结晶度而闻名，它的存在可改善碳化后的机械性能和热稳定性。研究了热处理过程中纤维的结构演变。结果表明，碳化后纤维的拉伸强度和模量显着增加，其中含有30 wt% PPS并在1400 ℃热处理的纤维获得了最高的拉伸强度（6.04±0.50 GPa）和最高的拉伸模量（ 619 ± 44 GPa) 是通过在 2500 °C 下热处理的含有 10 wt% PPS 的纤维实现的。碳纳米管和聚苯硫醚在脱磺化过程中的自由基偶联机制被认为是增强机械性能的关键因素。该研究还强调了使用 PPS 作为碳纤维前体的好处，无需昂贵且耗时的稳定过程。总体而言，这项研究为生产高性能且具有成本效益的碳纳米管基碳纤维提供了一种新颖的策略，并应用于各个行业。