| Effect of Carbon Black on Structure and Properties of CR Sponge |
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| DOI： |
| Key Words: CR；sponge material；expansion ratio；carbon black；reinforcement |
| Author Name | Affiliation | | HAN Yanchun | Qingdao University of Science and Technology | | HOU Jiarui | Qingdao University of Science and Technology | | WU Jianqin | Qingdao University of Science and Technology | | GAO Guangtao | Qingdao University of Science and Technology | | DUAN Yongxin | Qingdao University of Science and Technology |
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| Abstract: |
| The effect of carbon black N550 and N774 on the curing characteristics，expansion ratio，cell structure and mechanical properties of CR sponge was investigated.The results showed that，with the addition of carbon black，the scorch time was shortened，the curing was accelerated，but the consistency of curing and foaming was unaffected.In case of the same concentration of carbon black，the CR sponge material with carbon black N550 had better mechanical properties，and the CR sponge material with carbon black N774 had larger cell size，larger amount of cells and the relatively thin cell walls.The expansion ratio decreased along with the increase of Mooney viscosity.For the materials having same Mooney viscosity，the CR sponge filled with carbon black N550 had a relatively large expansion ratio.The dynamic mechanical thermal analysis showed that，the addition of carbon black could enhance the damping coefficients of CR sponge material.The CR sponge material with carbon black N550 had a higher tanδ and wider damping peak，indicating better damping properties. |
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