Synthesis of High cis-1,4-BR with Neodymium for the Manufacture of Tires
Table 5
Mechanical properties of SBR.
Properties
Blend 1
Blend 2
Blend 3
Blend 4
Blend 5
Resilience at 25°C/%
26
46
49
41
44
Abrasion/mm3
108.73
72.26
76.68
68.37
69.08
Hardness shore A-2
70
71
71
72
70
Tensile strength/MPa
19.88
19.83
20.14
19.61
18.23
Elongation at break/%
359.6
350.1
341.8
376.5
371.8
Elongation modulus at 50%/MPa
2.50
2.35
2.42
2.37
2.39
Elongation modulus at 100% elongation/MPa
4.56
4.28
4.31
4.25
3.67
Elongation modulus at 300% elongation/MPa
16.87
16.36
17.07
15.37
14.32
Tan delta at 60°C
0.123
0.104
0.0088
0.108
0.117
Tan delta at 0°C
0.129
0.113
0.105
0.116
0.120
Except for Blend 3, polybutadienes represent 35% by weight of the total polymer. In Blend 3 42% was added by weight of polybutadiene to total of the polymer.
