聚氨/碳纤维增强聚合物复合材料与碳化咖啡粉的机械和抗结冰性能
Seong Baek Yang1, Min Ji Woo2, Donghyeon Lee3
1Research Institute for Green Energy Convergence Technology, Gyeongsang National University, Jinju 52828, Republic of Korea.
Materials (Basel, Switzerland)
|October 16, 2025
概括
这项研究使用废弃的咖啡粉,碳化成填料,以改善复合材料上的聚氨涂层. 这些可持续的填充剂提高了耐用性,并为各种应用提供了有效的抗结冰性能.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续工程 可持续工程
- 表面化学 表面化学
背景情况:
- 消耗的咖啡粉 (SCG) 是一个丰富的废物.
- 为聚合物复合材料开发可持续填充剂对于减少环境影响至关重要.
- 提高涂料的机械耐用性和抗结冰性能对于航空航天和风能等应用至关重要.
研究的目的:
- 研究碳化消耗咖啡粉 (CSCG) 作为聚氨 (PU) 涂层中的填充剂的有效性.
- 为了提高碳纤维增强聚合物 (CFRP) 基板的机械耐用性和抗结冰性能.
- 为了优化CSCG填料特性 (碳化温度,颗粒大小,负载) 的PU涂层.
主要方法:
- 通过氧化碳化 (100-300°C) 将SCG加工成CSCG填充剂 (<100μm).
- CSCG填充剂被纳入PU涂层中的1或5重量%,并通过喷涂涂料进行涂抹.
- 一个全因子设计评估了碳化温度,颗粒大小和填充剂负荷对涂层性能的影响.
主要成果:
- 优化的配方 (300°C,100μm,5%重量%) 呈现出高水接触角 (103.5°) 和低粘合力 (55.8mJ/m2).
- CSCG填充剂提高了热稳定性 (60%的燃烧率),增加了拉伸模量,并提高了PU涂层的玻璃过渡温度.
- 抗结冰测试显示,由于极地表面能量减少,表面粗度增加和多孔的碳结构,稀疏,不连续的冰形成.
结论:
- 碳化消耗咖啡粉是聚氨涂层的有效可持续填充剂.
- CSCG填充剂显著提高了CFRP上的PU涂层的机械,热和抗结冰性能.
- 这种方法提供了一种可持续的解决方案,用于改善易结冰的环境中的材料性能.
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