Table 1
Formulation of the mixes.
Code formulation (phr)* S1 S1.5 S2 P1 P1.5 P2 P1-PFM P1.5-PFM P2-PFM R25-PFM R50-PFM R75-PFM R100-PFM R150-PFM
NBR 100 100 100 100 100 100 100 100 100 100 100 100 100 100
ZnO 5 5 5 5 5 5 5 5 5 5 5 5 5 5
Stearic acid 2 2 2 2 2 2 2 2 2 2 2 2 2 2
TMQ 1 1 1 1 1 1 1 1 1 1 1 1 1 1
DOP 6 6 6 6 6 6 6 6 6 6 6 6 6 6
MBTS 1 1 1 – – – – – – – – – – –
TMTD 0.5 0.5 0.5 – – – – – – – – – – –
Sulfur 1 1.5 2 – – – – – – – – – – –
HAF 30 30 30 30 30 30 30 30 30 30 30 30 30 30
Peroxide (DCP) – – – 1 1.5 2 1 1.5 2 – – –
PETRA – – – – – – 5 5 5 5 5 5 5 5
Irradiation dose (kGy) 25 50 75 100 150
* phr = part per hundred part of rubber.