Marinis Dimitrios, Markatos Dionysios, Farsari Ergina, Amanatides Eleftherios, Mataras Dimitrios, Pantelakis Spiros
Department of Chemical Engineering, University of Patras, GR26504 Patras, Greece.
Department of Mechanical Engineering and Aeronautics, University of Patras, GR26504 Patras, Greece.
Polymers (Basel). 2024 Oct 7;16(19):2836. doi: 10.3390/polym16192836.
In this work, a plasma-assisted solvolysis method is proposed as an alternative method for the oxidative degradation of carbon fiber-reinforced composites (CFRCs). Nitrogen plasma ignition within bubbles in a concentrated nitric acid solution is employed, combining the synergistic effects of traditional nitric acid solvolysis and plasma chemistry. A comprehensive process flowchart, including steps such as composite pretreatment, matrix dissolution, fiber recovery and cleaning, solvent regeneration and reuse, and waste treatment, is also discussed, highlighting their importance in process effectiveness. Moreover, a study on the effect of the composite's mass on the plasma-enhanced solvolysis process is conducted, and the results are exploited for the calculation of critical parameters such as efficiency, recovery rates, capacity, fibers quality, energy consumption, consumption of raw materials, operational and installation costs, and environmental impact. A preliminary comparison to other recycling methods based on the literature findings is also attempted, and preliminary metrics to assess the sustainability of the recycling process are proposed.
在本工作中，提出了一种等离子体辅助溶剂分解法，作为碳纤维增强复合材料（CFRCs）氧化降解的替代方法。采用在浓硝酸溶液中的气泡内进行氮等离子体点火，结合传统硝酸溶剂分解和等离子体化学的协同效应。还讨论了一个综合工艺流程图，包括复合材料预处理、基体溶解、纤维回收与清洗、溶剂再生与回用以及废物处理等步骤，强调了它们在工艺有效性方面的重要性。此外，对复合材料质量对等离子体增强溶剂分解过程的影响进行了研究，并利用结果计算了效率、回收率、处理能力、纤维质量、能耗、原材料消耗、运营和安装成本以及环境影响等关键参数。还基于文献研究结果与其他回收方法进行了初步比较，并提出了评估回收过程可持续性的初步指标。
