| 产品结构对轨道车辆橡胶弹性元件防火性能的影响 |
| Influence of Product Structure on Fire Resistance of Elastic Rubber Components of Rail Vehicles |
| 投稿时间：2019-11-24 修订日期：2019-11-24 |
| DOI：10.12136/j.issn.1000-890X.2020.06.0443 |
| 中文关键词: 轨道车辆 橡胶弹性元件 产品结构 橡胶面积占比 金属隔板 防火性能 |
| 英文关键词: railway vehicle elastic rubber component product structure proportion of rubber area metal partition fire resistance |
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| 中文摘要: |
| 研究产品结构对轨道车辆橡胶弹性元件防火性能的影响。通过模拟橡胶弹性元件结构，对不同类型的橡胶-金属结构试样的防火性能试验得出：当橡胶面积占比相同时，橡胶中有金属隔板的试样的防火性能明显改善，金属隔板越多，防火性能越好；随着橡胶面积占比的减小，不同结构试样的最大烟密度和最大平均热释放速率均减小，防火性能均提高；橡胶中无金属隔离的试样在橡胶面积占比小于60%时，其防火性能可达到EN 45545-2的HL2等级要求，橡胶中有两块金属隔板或橡胶中心有金属柱体的试样在橡胶面积占比达到80%时，其防火性能仍可达到EN 45545-2的HL2等级要求。 |
| 英文摘要: |
| The influence of product structure on the fire resistance of elastic rubber components of rail vehicles was studied. By simulating the structure of elastic rubber components，the fire resistance tests of the samples with different types of rubber-metal structure showed that when the proportion of rubber area was
the same，the fire resistance of the samples with metal partition in rubber was obviously improved，and the more metal partition was，the better the fire resistance was. As the proportion of rubber area decreased，the maximum smoke density and the maximum average heat release rate of the samples with different structures decreased，and the fire resistance was improved. When the proportion of rubber area of the sample without metal isolation was less than 60%，the fire resistance of the sample could meet the HL2 requirements of EN 45545-2. When the proportion of rubber area of the sample with two metal partitions in rubber or metal cylinder in rubber center reached 80%，the fire resistance of the sample could still meet the HL2 requirements of EN 45545-2. |
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