天然/烯-丁混合复合材料可能应用于减压轴承
Saifeng Tang1, Zhanxu Li1, Weichong Sun1
1State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China.
Polymers
|July 13, 2024
概括
这项研究探讨了用于减噪应用的天然 (NR) 和乙烯 (SBR) 混合物. 增加SBR含量改善了火山化,但降低了疲劳温度上升和改变了压缩设置,为材料优化提供了洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 机械工程 机械工程
背景情况:
- 天然 (NR) 复合材料对于减震至关重要.
- 单元往往无法满足严格的性能要求.
- 开发先进的混合物对于增强的阻尼性能至关重要.
研究的目的:
- 研究不同NR/SBR比率对复合材料性能的影响.
- 分析对压缩集,疲劳温度和耐老化的影响.
- 描述NR/SBR混合复合材料的动态粘弹性.
主要方法:
- 在不同比例下机械混合NR和SBR.
- 压缩设置和压缩疲劳温度上升的评估.
- 热氧化衰老试验. 热氧化衰老试验.
- 动态机械热分析 (DMTA) 和加工分析.
主要成果:
- 随着SBR含量增加,火山化率显著增加.
- 压缩疲劳温度上升从47°C (0%SBR) 下降到31°C (50%SBR).
- 压缩设置保持稳定至20%SBR,然后逐渐增加.
结论:
- 添加SBR会影响火山化动力学和热力学性能.
- 最佳的SBR比率是必要的,以平衡阻尼性能和材料稳定性.
- 混合物组成极大地影响了基于NR的阻尼材料的性能.
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