Polyaryletherketones; Composites; Abrasive wear; Mechanical property; Fibre length distribution
The mechanical and tribological properties of various injection-moulded polyaryletherketones (PAEKs) and their
composites are presented in this paper. The mechanical properties studied were tensile strength, tensile modulus, elongation
at break, flexural strength, flexural modulus, hardness and impact strength. Composites were characterized by
using differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). Fibre length distributions of
various PAEK composites were also characterized. Abrasive wear studies of PAEKs and their composites were carried
out under multipass conditions against silicon carbide (SiC) abrasive paper by using a pin-on-disc machine. The influence
of variables such as sliding distance, load and abrasive grit size was investigated. It was observed that the fibre reinforcement reduced the abrasive wear resistance of neat PAEK matrix. Combinations of fibre and particulate filler are more detrimental to abrasive wear performance. Various mechanical properties such as hardness, ultimate tensile strength and elongation at break were analysed for investigating wear property correlations. Worn samples and abrasive paper were also studied with scanning electron microscopy (SEM).