Quasi-Static Flexural Behavior of Epoxy-Matrix-Reinforced Crump Rubber Composites

Abstract

Waste tires have emerged as a severe environmental threat worldwide as they create a number of disposal and landfill burden issues. In the present study, environmental pollutant crump rubber derived from waste discarded tires was reinforced with epoxy resin and prepared by means of an open-mold casting method to assess its mechanical properties. The impact of crump rubber content (0, 10, 20 and 30 vol.%) on the mechanical behavior of the composites was assessed using three-point bending tests at a constant strain rate of 0.1 and 0.01 mm/s. The stress–strain profiles of the 0.01 mm/s specimens revealed higher strains to failure compared with the 0.1 mm/s tested specimens and all the specimens showed brittle failure. Irrespective of the strain rates, tests revealed a marginal increase in the strength values of the composites and a significant increase in the modulus of all the composites compared with neat epoxy specimens. The results suggest that crump rubber can be effectively used in utilitarian composites requiring good flexural modulus and strength properties. Crump rubber epoxy composites with 30 vol.% of crump rubber showed higher modulus and strength compared with neat epoxy and other composites owing to the toughening phase induced by the crump rubber particles. The failure and fracture features of the specimens were analyzed using scanning electron microscopy.

Epoxy and Bio-Based Epoxy Carbon Fiber Twill Composites: Comparison of the Quasi-Static Properties

“…Thus, the replacement of thermoset matrices with renewable bio-based parts represents an effective solution for contributing to decarbonization goals. Other strategies to lower the environmental impact of materials consist of adding waste to the matrix as fillers [ 11 , 12 , 13 ].…”

Analytical modeling and experimental estimation of the dynamic mechanical characteristics of green composite: Caesalpinia decapetala seed reinforcement

“…7,8 The use of biodegradable composites can reduce the amount of energy wasted during the processing of composites. 9,10 Vegetables and animal sources provide natural fibers like cotton, coconut, sisal, jute, hemp, and animal protein fibers such as wool and silk. 11 Common examples included cotton, coir, hemp, flax, jute, sisal, and abaca.…”

“…Biopolymers have extensive potential applications in various sectors such as medicine, textiles, packaging, agriculture, and transport 7,8 . The use of biodegradable composites can reduce the amount of energy wasted during the processing of composites 9,10 . Vegetables and animal sources provide natural fibers like cotton, coconut, sisal, jute, hemp, and animal protein fibers such as wool and silk 11 .…”

Numerical Modelling and Validation of Mixed-Mode Fracture Tests to Adhesive Joints Using J-Integral Concepts

“…The mechanical properties of the adhesive are determined through experimental testing following the applicable standards, as described by da Silva et al [3]. Moreover, in the adherends' case, extensive testing is necessary for enhanced adherends, e.g., those studied in reference [4]. However, the behaviour of the adhesive within a joint also depends on geometric factors such as the adhesive layer's thickness (t A ) [5], material properties [6], and temperature [7].…”