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<p>Since the manufacturing of fiber-reinforced composites (FRCs) is increasing steadily, disposing of waste from these materials is becoming increasingly important from many points of view. Therefore, the ability to create new composites from recycled components is essential to ensuring that manufacturing processes are circular, and costs are kept low. This work examines the performance of a hybrid carbon/glass fiber–reinforced plastic (CGFRP) laminate and its production process by resin infusion under flexible tooling (RIFT)-based fabrication procedure. The hybrid CGFRP laminate is made by a bisphenol-epoxy-vinyl ester resin with two reinforcements arranged in sandwich-like layered structure: a unique, commercially available, recycled non-woven carbon fabric (internal double unidirectional plies) combined with a biaxial ± 45° fiberglass-based fabric (external unidirectional double plies). Through quasi-static tensile and flexural characterization, the mechanical behavior of the laminate was examined in different directions to assess any potential anisotropy in the final product. The hybrid laminate produced by the RIFT process showed high mechanical strength (ultimate tensile strength and Young’s modulus reaching values of about 270&#xa0;MPa and 19.4 GPa, respectively, and ultimate flexural strength and flexural modulus of about 370&#xa0;MPa and 17.9 GPa, respectively), and if cross-ply stratification is adopted, it is possible to control anisotropy. High sustainability and lower costs, thanks to the use of recycled carbon fibers (CFs), and the use of a scalable RIFT process, made the hybrid laminate potentially employable in a variety of applications.</p>

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Manufacturing by resin infusion and characterization of hybrid carbon/glass fiber–reinforced plastic from recycled carbon fiber

  • 期刊论文

  • 发表日期：

    2025年2月17日

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  • Elisa Pizzi,
  • Federica Trovalusci

摘要

Since the manufacturing of fiber-reinforced composites (FRCs) is increasing steadily, disposing of waste from these materials is becoming increasingly important from many points of view. Therefore, the ability to create new composites from recycled components is essential to ensuring that manufacturing processes are circular, and costs are kept low. This work examines the performance of a hybrid carbon/glass fiber–reinforced plastic (CGFRP) laminate and its production process by resin infusion under flexible tooling (RIFT)-based fabrication procedure. The hybrid CGFRP laminate is made by a bisphenol-epoxy-vinyl ester resin with two reinforcements arranged in sandwich-like layered structure: a unique, commercially available, recycled non-woven carbon fabric (internal double unidirectional plies) combined with a biaxial ± 45° fiberglass-based fabric (external unidirectional double plies). Through quasi-static tensile and flexural characterization, the mechanical behavior of the laminate was examined in different directions to assess any potential anisotropy in the final product. The hybrid laminate produced by the RIFT process showed high mechanical strength (ultimate tensile strength and Young’s modulus reaching values of about 270 MPa and 19.4 GPa, respectively, and ultimate flexural strength and flexural modulus of about 370 MPa and 17.9 GPa, respectively), and if cross-ply stratification is adopted, it is possible to control anisotropy. High sustainability and lower costs, thanks to the use of recycled carbon fibers (CFs), and the use of a scalable RIFT process, made the hybrid laminate potentially employable in a variety of applications.