首页|Development of sustainable microwave-based approach to recover glass fibers for wind turbine blades composite waste
Development of sustainable microwave-based approach to recover glass fibers for wind turbine blades composite waste
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NSTL
Elsevier
In this study, we report the development of a sustainable microwave-assisted chemical recycling process to recycle glass fiber reinforced polymer (GFRP) composite waste. Degradation of GFRP composites using hydrogen peroxide and acetic acid with microwave irradiation was investigated. Process parameters: Chemical solvent to composite weight ratio (mL/g) and microwave exposure duration were used at constant microwave power (700 W). The chemical solvent ratio (oxidizing agent/acid:30/70, 50/50) with microwave exposure of 180 s could achieve nearly complete degradation of epoxy. The decomposition rate (D-y) of epoxy was found as 97.2%. TGA and FTIR analysis was done to determine D-y and basic chemical structure of recovered glass fibers (RGFs), respectively. SEM analysis was done for surface morphology of virgin glass fibers (VGFs) and RGFs. The RGFs showed 99.8% ultimate tensile strength, 93.3% Young's modulus, and 95.7% strain-to-failure compared to VGFs. A plausible mechanism for the degradation of matrix material has been proposed.
NSTL
Elsevier
