Thermoplastic Composites Reinforced with Wool and Wood: Application in the Automotive Industry

Martins, Gabriela Botelho; Batista, Catarina; Domingues, Jorge; Santos, Cyril; Antunes, Filipe E.; Mateus, Artur

doi:10.3390/materproc2022008152

Cited by 1 publication

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“…The disparities between the different types of polymeric materials begin with their origin, production, and processability, and they extend to their properties and end of life. Thermoplastic materials are more popular because of their superior performance in sectors such as automotive [ 5 ], where the reduction of the overall weight of vehicles is achieved by the incorporation of thermoplastic materials that substitute costly and difficult-to-recycle metallic elements, reaching stress values that can go up to 76 MPa [ 6 ]. On the other hand, thermoset materials are applied in more demanding sectors such as aeronautics [ 7 ], civil engineering [ 8 ], naval engineering [ 9 ], and other strategic sectors.…”

Section: Introductionmentioning

confidence: 99%

Strategies towards Fully Recyclable Commercial Epoxy Resins: Diels–Alder Structures in Sustainable Composites

Vidal,

Hornero,

De la Flor

et al. 2024

Polymers

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The Diels–Alder equilibrium is a widely known process in chemistry that can be used to provide a thermoset structure with recyclability and reprocessability mechanisms. In this study, a commercial epoxy resin is modified through the integration of functional groups into the network structure to provide superior performance. The present study has demonstrated that it is possible to adapt the curing process to efficiently incorporate these moieties in the final structure of commercial epoxy-based resins. It also evaluates the impact that they have on the final properties of the cured composites. In addition, different approaches have been studied for the incorporation of the functional group, adjusting and adapting the stoichiometry of the system components due to the differences in reactivity caused by the presence of the incorporated reactive groups, with the objective of maintaining comparable ratios of epoxy/amine groups in the formulation. Finally, it has been demonstrated that although the Diels–Alder equilibrium responds under external conditions, such as temperature, different sets of parameters and behaviors are to be expected as the structures are integrated into the thermoset, generating new equilibrium temperatures. In this way, the present research has explored sustainable strategies to enable the recyclability of commercial thermoset systems through crosslinking control and its modification.

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