| The extruding behaviors of powdered NR filled by dysprosium-modified carbon black |
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| DOI： |
| Key Words: dysprosium-modified carbon black；carbon black filled NR；extrusion rheological properties；Garvey die；apparent shearing viscosity |
| Author Name | Affiliation | | LIN Ya-ling | South China Agriculture University | | ZHANG An-qiang | South China University of Technology | | WANG Lian-shi | South China University of Technology |
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| Abstract: |
| Dysprosium-modified carbon black filled powdered NR［P（NR/HAF-Dy）］ was prepared by liquid phase chemical deposition and coacervation coprecipitation，and its capillary extrusion rheological properties and Garvey die extrudability were investigated，compared with traditional carbon black filled powdered NR［P（NR/HAF）］ and NR/carbon black blends（NR/HAF） prepared through dry mixing.The results showed that in wide range of temperatures（90~150 ℃） and shear rates（20~1 500 s-1），the order of the apparent shearing viscosity for 3 different mixes was as follows：P（NR/HAF-Dy）＜P（NR/HAF）＜NR/HAF.P（NR/HAF-Dy） possesses very low apparent shearing viscosity and stable non-Newtonian fluid flowing properties.The order of the Garvey die extrudability for 3 different mixes was as follows：P（NR/HAF-Dy）＞P（NR/HAF）＞NR/HAF. |
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