Thermal Recycling of Glass Fibre Composites: A Circular Economy Approach

Composite materials are used in a wide range of applications, but due to their inherent nature heterogeneity, particularly for thermoset-based polymer composites, recycling is problem, and life cycle management remains one, too. This study applies circular economy approach the problem excess waste glass fibre (GF) composites seeks solution by testing methodology thermal GF combining different times temperatures. Through by-hand lay-up process, diverse laminates were manufactured with recycled GF, mechanical results compared those control laminate; this way, we sought reinsert fibres into new cycle, closing loop material. The static properties, tensile tests, three-point bending (3PB) tests studied as well viscoelastic behaviour respective laminates. For woven fibres, highlight process at 600 °C 15 min, which revealed loss only 15.3% strength. 400 180 min presented reduction 52.14% 33.98% flexural strength, respectively, representing best solution. all laminates, stress, stiffness, strain sensitive rate, tendency observed these properties can be supported linear models. Subsequently, results, stress–relaxation creep analysed, it possible conclude that temperature time influence response