| 炭黑N330用量对天然橡胶阻尼性能的影响 |
| Effect of Carbon Black N330 Amounts on Damping Properties of NR |
| 投稿时间：2022-07-27 修订日期：2022-08-15 |
| DOI：10.12136/j.issn.1000-890X.2024.02.0115 |
| 中文关键词: 天然橡胶 炭黑N330 阻尼性能 损耗因子 动/静刚度比 |
| 英文关键词: NR carbon black N330 damping property loss factor dynamic/static stiffness ratio |
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| 中文摘要: |
| 研究炭黑N330用量对天然橡胶（NR）阻尼性能的影响。结果表明：随着炭黑用量的增大，NR混炼胶的FL，Fmax和Fmax－FL增大，t90缩短；NR硫化胶的邵尔A型硬度、100%定伸应力、300%定伸应力、拉伸强度和撕裂强度增大，拉断伸长率和回弹值减小；NR硫化胶低温下的损耗因子（tanδ）峰值减小，高温下的tanδ呈增大趋势。随着温度的升高，NR硫化胶的tanδ减小，且炭黑N330用量大的NR硫化胶的tanδ减小速率大于炭黑N330用量小的NR硫化胶，表明高温下炭黑N330用量大的NR硫化胶的阻尼性能对温度变化更敏感。随着炭黑N330用量的增大，NR硫化胶的静刚度和动/静刚度比都增大，表明炭黑N330用量增大对NR硫化胶的阻尼性能有提升作用。 |
| 英文摘要: |
| The effect of carbon black N330 amounts on the damping properties of natural rubber（NR） was studied.The results showed that，with the increase of carbon black N330 amount，FL，Fmax and Fmax－FL of NR compound increased and t90 decreased，the Shore A hardness，tensile stress at 100% and 300% elongation，tensile strength and tear strength of NR vulcanizate increased，the elongation at break and rebound value decreased，the loss factor（tanδ） at low temperature decreased，and the loss factor at high temperature increased.With the increase in temperature，the tanδ of NR vulcanizate decreased，and the tanδ of NR vulcanizate with a large carbon black N330 amount decreased faster than NR vulcanizate with small carbon black N330 amount，indicating that the damping properties of NR vulcanizate with large carbon black N330 amount at high temperature were more sensitive to the temperature change.With the increase of carbon black N330 amount，the static stiffness and dynamic/static stiffness ratio of NR vulcanizate increased，indicating that the increase of carbon black N330 amount could improve the damping properties of NR vulcanizate. |
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