| Application of Conductive Carbon Black to NBR Compound |
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| DOI： |
| Key Words: conductive carbon black；acetylene black；NBR；electric property |
| Author Name | Affiliation | | Zhang Xinhui | Changchun Institute of Applied Chemistry，Chinese Academy of Sciences | | Cai Hongguang | Changchun Institute of Applied Chemistry，Chinese Academy of Sciences | | Li Bailin | Changchun Institute of Applied Chemistry，Chinese Academy of Sciences |
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| Abstract: |
| The effect of loading level，cure time and plasticizer level on the processibility and cure characteristics of NBR compound filled with a new type of conductive carbon black CSF and its vulcanizate physical properties and electric property was studied and compared with that of acetylene black（ACET）compound and vulcanizate. The results showed that the black-bound rubber contents，Mooney viscosity [ML（1+4）100 ℃]，yield strength and tensile strength increased，the elongation at break and extrusion die swelling decreased，the extrudate appearance improved，the scorch time and optimum cure time were longer，the cure rate slowed down，the physical properties of the vulcanizate decreased and the elect rical property improved as the CSF loading level increased；the electric volume resistivity of vulcanizate decreased as the cure time and the applied load increased，and increased as the temperature and the level of plasticizer DOP increased. The black-bound rubber，Mooney viscosity and stress-strain properties of the CSF compound and its vulcanizate conductivity improved when compared with those of ACET compound and vulcanizate. |
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