Abstract

This chapter addresses the environmental and energy challenges posed by the increasing production of composite materials, particularly those reinforced with carbon and glass fibres. Current recycling technologies focused on fibre recovery, such as thermal and chemical methods, now enable the production of fibres suitable for reintegration into the value chain. The chapter details adapted textile technologies for processing these recycled fibres, covering methods from non-woven fabric production to the newest manufacturing technology of yarns and unidirectional tapes. Technologies such as carding and yarn formation are analyzed, highlighting the need for hybridization with virgin materials to enhance the mechanical properties of the final products. While current advances do not yet match the performance of virgin materials, ongoing research continues to optimize these processes, paving the way for the industrialization of more sustainable composites, with applications ranging from lightweight structures to sectors with higher mechanical requirements.

Abstract

The long lifespan and difficult maintenance procedures of tidal turbine blades make the selection of eco-friendly, durable materials difficult. Nevertheless, the development of sustainable composite materials for tidal turbine blades is crucial for reducing the environmental impact of these renewable energy technologies. This study investigates the process of selection and evaluation of a thermoplastic Elium resin from Arkema, in combination with fiberglass reinforcement, for use in tidal turbine blades. The chosen resin offers several advantages, including recyclability, compatibility with infusion processes, and good overall mechanical properties. To assess long-term performance, various tests were conducted on aged samples. Mechanical testing showed that while aging led to reductions in several key properties (e.g., ILSS, tensile strength, compressive strength), the material's overall performance remained viable for use in turbine blades, especially with the application of a protective coating. Improved handling of the resin in later samples resulted in better performance. This work contributes to the ongoing efforts to develop more sustainable and recyclable materials for renewable energy infrastructure.