碳纤维增强聚合物复合材料的热学研究,使用多尺度建模
Wiem Nasri1, Zied Driss1, Ridha Djebali2
1Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax (ENIS), University of Sfax (US), B.P. 1173, Road Soukra km 3.5, Sfax 3038, Tunisia.
Materials (Basel, Switzerland)
|November 25, 2023
概括
本研究研究了碳纤维增强聚合物 (CFRP) 复合材料的导热性. 多尺度建模揭示了纤维体积分数和温度显著影响热性能,对于储存等应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 复合材料 复合材料 复合材料
- 热力工程是热力工程中的一个.
背景情况:
- 碳纤维增强聚合物 (CFRP) 复合材料由于聚合物基质的低导热性,具有较差的穿透厚度导热性.
- 了解和改进CFRP的热性能对于诸如储等应用至关重要,以提高效率并最大限度地减少能源损失.
研究的目的:
- 为了研究平面编织CFRP复合材料的热行为和预测热导电性.
- 使用多尺度建模分析各种参数对CFRP热性能的影响.
主要方法:
- 使用数值模拟来预测CFRP复合材料在微,中,和宏尺度上的导热率.
- 用多尺度建模方法进行参数研究,以评估不同变量的影响.
- 预测的导热值与实验结果和分析模型进行了比较.
主要成果:
- 该研究成功预测了CFRP复合材料的导热率,与实验和分析结果有很好的一致性.
- 纤维体积分数和温度被确定为影响热导率的最重要因素.
- 阶段间纤维/矩阵厚度也显示出相当大的影响,而矩阵多孔度在研究范围内的影响较小 (5-15%).
结论:
- 多尺度建模为了解CFRP复合材料的热性能提供了一种有效的方法.
- 优化纤维体积分数和考虑工作温度是管理CFRP应用中导热率的关键.
- 这些发现对于设计具有量身定制的热性能的先进复合材料至关重要,特别是用于储能系统.
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