碳纤维的增强界面特性/单体聚合物反应物方法聚胺复合物通过聚胺尺寸测量
Chengyu Huang1, Jinsong Sun2, Zhiwei Liu1
1School of Materials Science and Engineering, Beihang University, Beijing 100191, China.
Materials (Basel, Switzerland)
|December 17, 2024
概括
一种新的聚胺 (PI) 尺寸调整剂增强了碳纤维 (CF) 增强PI复合材料. 这改善了接口粘合和机械性能,克服了用于高温应用的传统环氧尺寸剂的局限性.
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
- 复合材料 复合材料 复合材料
背景情况:
- 碳纤维 (CF) 增强的聚胺 (PI) 复合材料为航空航天和铁路运输提供了出色的性能.
- 传统的环氧尺寸剂在PI加工温度 (350°C) 上失效,导致接口缺陷和降低复合材料性能.
- 需要与高温PI矩阵兼容的先进尺寸剂.
研究的目的:
- 为碳纤维 (CFs) 开发一种新的聚胺 (PI) 尺寸剂,以改善PI复合材料的界面粘附性.
- 为了解决传统尺寸剂和PI树脂之间的热不兼容问题.
- 提高CF/PI复合材料的整体机械性能和界面完整性.
主要方法:
- 制备一个低分子量热固化聚胺尺寸剂.
- 优化大小碳纤维可加工性使用热塑性聚胺.
- 由此产生的复合材料的界面和机械性能的表征.
主要成果:
- 聚胺尺寸显著改善了接口性能,将接口切削强度 (IFSS) 从82.08 MPa提高到136.27 MPa.
- 间层切割强度 (ILSS) 从103.7 MPa增加到124.9 MPa,曲强度从2262.2 MPa增加到2562.1 MPa.
- 聚胺尺寸调节剂有效地弥合了CF和PI矩阵,增强了界面粘合和性能.
结论:
- 开发的聚胺尺寸剂是改善CF/PI复合材料性能的一种可行的解决方案.
- 这种进步克服了在高温复合材料加工中的传统尺寸剂的局限性.
- 增强的界面粘合导致先进复合材料的优越机械性能.
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