用剪切加厚液体和剪切强化聚合物增强的开放细胞泡的增强压缩性能
Jian Li1,2,3, Yaoguang Zhou1,2,3, Mohammad Rauf Sheikhi1,2,3
1The State Key Laboratory of Heavy-Duty and Express High-Power Electric Locomotive, Central South University, Changsha 410075, China.
Polymers
|May 14, 2025
概括
将剪切强化聚合物 (SSP) 和剪切加厚液 (STF) 纳入开放细胞聚氨泡中,可以显著提高它们的压缩耐用性. 用SSP填充的泡显示了最大的改善,特别是在高速和重复加载条件下.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 机械工程 机械工程
背景情况:
- 开放细胞PU泡提供了优良的缓冲和冲击吸收能力,但对于苛刻的应用需要更好的压力耐用性.
- 提高PU泡的机械性能,特别是在重复加载下,对于延长其功能寿命至关重要.
- 像剪切强化聚合物 (SSP) 和剪切加厚液体 (STF) 这样的智能材料具有改善泡性能的潜力.
研究的目的:
- 调查SSP和STF的结合对开放细胞PU泡的压缩特性的影响.
- 评估这些智能材料在各种负载条件下提高泡性能方面的有效性.
- 为了比较SSP填充与STF填充泡提供的性能改进.
主要方法:
- 准备和SSP和STF的rheological特征.
- 在不同速度 (6240毫米/秒) 的准静态压缩试验.
- 在6和24毫米/秒的负载卸载压缩试验,以评估恢复行为.
主要成果:
- 与整洁和STF填充的泡相比,SSP填充的泡在弹性,平原和密集区域显著改善.
- 充满STF的泡比干净的泡显示出适度的性能提升,但效益不如SSP充满的泡那么明显.
- 用SSP填充的泡在增加压缩速度时表现出增强的性能,而用STF填充的泡在更高的速度下保持稳定.
结论:
- 将SSP和STF与开放细胞泡相结合,可以大大提高压力性能,特别是在高速度和负载卸载周期期间.
- 与STF填充的泡相比,SSP填充的泡在压缩性能和耐久性方面提供了卓越的改进.
- 这些增强型泡增加了功能寿命,使它们适合重重重复加载的应用.
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