Mechanical properties of ABS resin reinforced with recycled CFRP

Abstract

This paper presents the mechanical properties of a composite consisting of acrylonitrilebutadiene-styrene (ABS) resin mixed with carbon fiber reinforced plastics (CFRP) pieces (CFRP/ ABS). CFRP pieces made by crushing CFRP wastes were utilized in this material. Nine kinds of CFRP/ABS compounds with different weight fraction and size of CFRP pieces were prepared. Firstly, tensile and flexural tests were performed for the specimens with various CFRP content. Next, fracture surfaces of the specimens were microscopically observed to investigate fracture behavior and fiber/resin interface. Finally, the tensile modulus and strength were discussed based on the macromechanical model. It is found that the elastic modulus increases linearly with increasing CFRP content while the strength changes nonlinearly. Microscopic observation revealed that most carbon fibers are separated individually and dispersed homogeneously in ABS resin. Epoxy resin particles originally from CFRP are dispersed in ABS resin and seem to be in good contact with surrounding resin. The modulus and strength can be expressed using a macromechanical model taking account of fiber orientation, length and interfacial bonding in short fiber composites.

Recycling carbon fibre reinforced polymers for structural applications: Technology review and market outlook

“…as fillers for artificial woods or asphalt, or as mineral-sources for cement, Conroy et al 2006). However, these products represent low-value applications; mechanical recycling is therefore mostly used for glass fibre reinforced polymers (GFRPs), although applications to thermoplastic and thermoset CFRPs can be found as well (ECRC 2003, Kouparitsas et al 2002, Ogi et al 2007, Takahashi et al 2007). Because mechanical recycling does not recover individual fibres, the mechanical performance of the recyclates is evaluated at the composite level (Table 5 in Section 3).…”

Environmental and financial performance of mechanical recycling of carbon fibre reinforced polymers and comparison with conventional disposal routes

“…Some literature claims rCF can be used to replace virgin carbon fibre (vCF) in direct injection moulding with nearly no degradation of mechanical properties (Takahashi et al, 2007). However, numerous other reports evaluating vCF replacement with rCF have shown significant degradation of the mechanical properties of rCF and the resulting composite material (Kouparitsas et al, 2002;Ogi et al, 2007). (Palmer et al, 2010) In the present study, fibrous CF recyclate (rCF) is assumed to displace glass fibres (GF) in composite materials at a ratio of 1:1 by weight, thereby avoiding the energy and GWP impacts of GF production.…”

Impact of Solvolysis Process on Both Depolymerization Kinetics of Nylon 6 and Recycling Carbon Fibers from Waste Composite

“…Mechanical process was first applied for composite residues reinforced thermosetting matrix glass fibers [3][4][5]. This method was then used to recycle carbon fiber from composites with thermoplastic or thermosetting resins [6,7]. This process allows the preservation of pieces of 4 to 15 mm of fibers.…”