| Properties of Silica Filled IR and NR Compounds |
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| DOI： |
| Key Words: IR；NR；silica；physical property；dynamic mechanical property |
| Author Name | Affiliation | | WANG Gang | Qingdao University of Science and Technology | | LIU Gaojun | Qingdao University of Science and Technology | | CUI Guangjun | Maoming Luhua Chemical Co.，Ltd | | LI Chaoqin | Qingdao University of Science and Technology |
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| Abstract: |
| The curing characteristics， physical properties and dynamic mechanical property of the silica filled domestic rare earth IR and NR compounds were investigated.The results showed that，compared with NR compound， the ts1 and t90 of the IR compound filled with equal weight silica were shorter，and the ML and MH were lower.The modulus and tensile strength of the IR vulcanizates were lower than that of NR vulcanizates，and the elongation at break was higher.When the addition level of silica was 30 phr，the Payne effect of IR vulcanizates was the most pronounced，while the shear storage modulus increased，shear loss modulus decreased，loss factor increased，and the dispersion of silica in IR was poor. |
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