Supercritical Fluids and Their Application to the Recycling of High-Performance Carbon Fibre Reinforced Composite Materials

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Supercritical Fluids and Their Application to the Recycling of High-Performance Carbon Fibre Reinforced Composite Materials ( supercritical-fluids-and-their-application-recycling-high-pe )

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The preparation of the cured resin is carried out as part of this research and is described in detail in Chapter 3.3.3. The structures of DER 332 and DDS are given in Figure 3. H3C CH3 OOO O O H2N S O NH2 Figure 3: Left; 2,2-Bis[4-(glycidyloxy)phenyl]propane (DER 332, BADGE), Right; 4,4’-diaminodiphenyl sulfone (DDS) Carbon fibre tow, T700S 50E, having a diameter of 7 μm was obtained from Toray Carbon Fibres America Inc. The analysis of virgin carbon fibres is provided in Chapter 3.3.4. Carbon Fibre Reinforced Polymer samples were obtained from Hexcel, having a carbon fibre content of 53.8 %v. The average thickness of the plate is 6.23 mm, with a minimum thickness of 6.17 mm and a maximum thickness of 6.30 mm. Curing of the resin was carried out at 5.0 MPa. As this is a commercial composite material information about the composition of the resin, crosslinking agent and carbon fibres is not supplied. Since one objective of the project is the Efficient X-Sector use of Heterogeneous Materials in Manufacturing, an end-of-life CFRP bicycle wheel, supplied by Dolan Bikes, UK, was also used as part of this research. This material is also commercially produced and consequently information as to the resin composition, crosslinking agent, curing cycle and carbon fibre content was not available. 76

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