Characterization methods for recycled matrix materials and reinforcing fibres

Characterization methods for recycled matrix materials and reinforcing fibres

In this lesson, the different methods to characterize recycled matrix materials and reinforcing fibres are discussed. The first part of this document addresses the management and the characterization of the organic fraction obtained from advanced recycling processes (e.g., solvolysis). In particular, the main methods for identifying the organic recyclate composition and properties are explained. In addition, the possible reuse options of the recycled resin are addressed together with their most relevant properties.

In the second part of the document, the focus is on recycled fibres. First, the importance of the characterization of recycled fibres is explained and emphasized alongside with the most important characteristics of the fibres in a composite application. Then different methods are reviewed shortly. The methods are divided in methods enabling to study the fibre dimension, their mechanical properties as well as their surface properties. While the dimensions and mechanical properties of the fibres define their potential to reinforce the fibres, the surface properties must be sufficient to enable manufacture of high-quality composites where the subjected loads are transferred effectively to the load bearing component of the composite, i.e. the fibres. The methods to characterize the resulting fibre-matrix interfacial properties are reviewed in the lesson “Characterization methods for fibre-matrix interface”.