Abstract
The effect of the adhesion system components HRH (hydrated silica, resorcinol and hexamethylenetetramine) on the physico-mechanical properties of EPDM mixes was studied. The effect of different volume fractions of nylon–6 short fibers on these properties of EPDM vulcanizates was also studied before and after ageing. The results showed that the shorter the length of the fibers, the greater would be their efficiency in EPDM vulcanizates. The experimental results revealed that the best concentration of reinforcing fibers that leads to high stress at low strain was 25 phr. The presence of reinforcing fibers and the adhesion system greatly improve the ageing resistance of the rubber composites. This may be attributed to further formation of crosslinked resin, which balances the degradation that occurs during ageing.
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