基于纤维-树脂兼容性的聚胺矩阵复合材料的热电阻提高战略建设
Yu Xing1, Hongjiang Ni1, Daijun Zhang1
1National Key Laboratory of Advanced Composites, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China.
Materials (Basel, Switzerland)
|December 31, 2025
概括
碳纤维上的环氧尺寸可能会损害聚胺复合材料的热电阻. 预固化尺寸显著改善了热性能,并保持了纤维矩阵粘附性.
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
背景情况:
- 碳纤维增强的聚胺复合材料在航空航天领域至关重要.
- 碳纤维尺寸对复合材料热性能的影响需要研究.
研究的目的:
- 调查碳纤维尺寸对聚胺复合材料热性能的影响.
- 阐明环氧尺寸尺寸的有害影响背后的机制.
- 制定一种提高耐热性的策略.
主要方法:
- 治疗动力学分析分析
- 化学结构特征化 化学结构特征化
- 热性能测试 (玻璃过渡温度,热老化)
主要成果:
- 由于环氧尺寸,观察到对热电阻的非线性损害.
- 提出了一种涉及环氧胺反应和柔性细分插入的机制.
- 预固化碳纤维尺寸将玻璃过渡温度提高了20°C,并在热老化过程中减轻了25%的重量损失.
- 保持了良好的光纤矩阵接口.
结论:
- 环氧尺寸可能会对聚胺复合材料的热性能产生负面影响.
- 预固化碳纤维尺寸是提高耐热性的有效策略.
- 这种方法提高了碳纤维矩阵的兼容性,以获得更好的热性能.
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