Studies on the use of nano zinc oxide and modified silica in NR, CR ...
Studies on the use of nano zinc oxide and modified silica in NR, CR ...
Studies on the use of nano zinc oxide and modified silica in NR, CR ...
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Chapter 6<br />
show better mechanical properties compared to vulcanizate with higher<br />
dosage (5phr) <strong>of</strong> ZnO(c).<br />
6.3.3 Properties <strong>of</strong> filled composites<br />
Tensile properties<br />
Tensile stregth Mpa<br />
El<strong>on</strong>gati<strong>on</strong> at break (%)<br />
12<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
600<br />
500<br />
400<br />
300<br />
200<br />
100<br />
111<br />
0<br />
S-5 S-6 S-7 S-8 S-9 S-10<br />
Vulcanizates<br />
S-5 S-6 S-7 S-8 S-9 S-10<br />
Vulcanizates<br />
Tensile modulus Mpa<br />
Tear strength N/mm<br />
8<br />
7<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0<br />
50<br />
40<br />
30<br />
20<br />
10<br />
0<br />
S-5 S-6 S-7 S-8 S-9 S-10<br />
Vulcanizates<br />
S-5 S-6 S-7 S-8 S-9 S-10<br />
Vulcanizates<br />
Figure 6.3 Tensile properties <strong>of</strong> filled vulcanizates <strong>of</strong> SBR<br />
Tensile properties <strong>of</strong> SBR filled vulcanizates are shown <strong>in</strong> Figure 6.3.<br />
The tensile properties <strong>of</strong> vulcanizate with 5phr ZnO(c) is superior compared<br />
to <strong>the</strong> tensile properties <strong>of</strong> vulcanizate with 2phr ZnO(c). Similarly <strong>the</strong> tensile<br />
properties <strong>of</strong> vulcanizates with 2phr ZnO(p) <strong>and</strong> 2phr ZnO(s) are superior<br />
compared to <strong>the</strong> tensile properties <strong>of</strong> vulcanizates with 1phr ZnO(p) <strong>and</strong> 1phr<br />
ZnO(s). Figure 6.3 shows that <strong>the</strong> tensile strength, tensile modulus <strong>and</strong> tear<br />
strength values for vulcanizates with 2phr ZnO(p) <strong>and</strong> 2phr ZnO(s) are