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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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Use <strong>of</strong> <strong>nano</strong> <strong>z<strong>in</strong>c</strong> <strong>oxide</strong> <strong>in</strong> chloroprene rubber<br />

5. Hardness, compressi<strong>on</strong> set, heat build-up <strong>and</strong> swell<strong>in</strong>g resistance are<br />

found to be comparable for vulcanizates with 2phr ZnO(p), 2phr<br />

ZnO(s) <strong>and</strong> 5phr ZnO(c).<br />

6. Abrasi<strong>on</strong>, flex <strong>and</strong> <strong>the</strong>rmal age<strong>in</strong>g resistances are found to be superior<br />

for vulcanizates with 2phr ZnO(p) <strong>and</strong> 2phr ZnO(s) compared to<br />

vulcanizate with 5phr ZnO(c).<br />

7. Crossl<strong>in</strong>k density <strong>of</strong> vulcanizates with 2phr ZnO(p) <strong>and</strong> 2phr ZnO(s)<br />

are slightly higher than vulcanizate with 5phr c<strong>on</strong>venti<strong>on</strong>al ZnO.<br />

102

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