| 炭黑对氯丁橡胶发泡材料结构及性能的影响 |
| Effect of Carbon Black on Structure and Properties of CR Sponge |
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| DOI： |
| 中文关键词: 氯丁橡胶 发泡材料 发泡倍率 炭黑 补强 |
| 英文关键词: CR sponge material expansion ratio carbon black reinforcement |
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| 中文摘要: |
| 研究炭黑N550和N774对氯丁橡胶（CR）海绵硫化发泡特性、微观形貌以及物理性能的影响。结果表明，随着炭黑的加入，焦烧时间缩短，硫化速度加快，硫化与发泡的匹配基本不受影响。相同炭黑用量下，添加炭黑N550的发泡材料综合物理性能较好，添加炭黑N774的发泡材料易于形成较大的泡孔尺寸、较多的泡孔和较薄的泡孔壁。随着胶料门尼粘度增加，发泡材料的发泡倍率减小，相同门尼粘度下，使用炭黑N550的发泡材料发泡倍率较大。动态热力学分析试验表明，炭黑的加入能够提高在0 ℃以上CR发泡材料的阻尼系数，使用炭黑N550补强的发泡材料损耗因子较大，且阻尼峰较宽，阻尼效果更好。 |
| 英文摘要: |
| 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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