Mechanical tests were conducted according to ASTM
D-638 at the temperature of 23 ± 1 C and relative
humidity of 60 ± 5%. A mechanical measurement of each
dumbbell-shaped specimen was carried out using a Universal
Testing Machine (Lloyd Instrument, LR 5 K, West
Sussex, UK) with a 100 N load; the crosshead speed wasmaintained at 40 mm/min. It should be noted that the
mechanical property results of the TPRS and TPWRS
composites were obtained by averaging the measurement
results of ten independent specimens.