The development of new sustainable routes towards better environmental footprint of composites for marine boatbuilding is motivated by the absence of eco-friendly and economically viable recycling techniques to deal with growing end-of-life thermoset boats waste and increasing restrictive legislation. Thermoplastic composites may offer the possibility to recover raw materials from retired parts, which could have a substantial environmental and economic benefit. This study investigates the feasibility of recovery and reuse of both reinforcement and matrix from a carbon fibre reinforced thermoplastic Elium composite. An original pyrolysis process allowed the depolymerisation of the acrylic matrix and recovery of clean carbon fibres and matrix monomer. Distillation was used to purify the monomer from impurities and a recycled Elium resin was synthesized and reused as matrix with long and aligned recycled carbon fibre reinforcement. The study of the morphological and composition differences at fibre scale resulted in concluding that sizing has been decomposed during depolymerisation process and only small traces of polymer were left on fibre surface. Virgin and recycled resin reinforced with carbon fibre laminates were produced by resin infusion. While tensile modulus, strength and strain at break were nearly unchanged, interlaminar shear strength results showed enhanced fibre-matrix interphase bonding. Dynamic mechanical analysis confirmed the good quality of recovered carbon fibres as well as similar virgin and re-polymerised resin properties. The new composite made from both recycled fibre and matrix could be used in the same application field.

由于缺乏生态友好且经济上可行的回收技术来处理越来越多的报废热固性船舶废物和越来越多的限制性立法，推动了新的可持续路线的发展，以改善海洋造船复合材料的环境足迹。热塑性复合材料可以提供从退役零件中回收原材料的可能性，这可能具有显着的环境和经济效益。本研究调查了从碳纤维增强热塑性 Elium 复合材料中回收和再利用增强材料和基体的可行性。原始的热解过程允许丙烯酸基体解聚并回收干净的碳纤维和基体单体。蒸馏用于从杂质中纯化单体，合成回收的 Elium 树脂，并作为具有长且对齐的回收碳纤维增强材料的基质重新使用。对纤维尺度形态和组成差异的研究得出结论，上浆剂在解聚过程中已分解，仅在纤维表面留下少量聚合物。用碳纤维层压板增强的原始树脂和再生树脂是通过树脂灌注生产的。虽然拉伸模量、强度和断裂应变几乎没有变化，但层间剪切强度结果表明纤维-基质相间粘合增强。动态力学分析证实了回收碳纤维的良好质量以及类似的原始和再聚合树脂特性。