基于碳纳米管薄膜的复合材料层间增韧

doi:10.7527/S1000-6893.2019.22900

材料工程与机械制造

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基于碳纳米管薄膜的复合材料层间增韧

于妍妍^1,2, 张远³, 高丽敏⁴, 曲抒旋², 吕卫帮²

1. 中国科学技术大学纳米技术与纳米仿生学院, 合肥 230026;
2. 中国科学院苏州纳米技术与纳米仿生研究所先进纳米复合材料创新中心, 苏州 215123;
3. 上海复合材料科技有限公司制造二部, 上海 201112;
4. 中国商飞北京民用飞机技术研究中心结构完整性部, 北京 102211

收稿日期:2019-01-09 修回日期:2019-01-23 出版日期:2019-10-15 发布日期:2019-03-01
通讯作者: 吕卫帮 E-mail:wblv2013@sinano.ac.cn
基金资助:
国家自然科学基金青年科学基金（51503225）；江苏省自然科学基金（BK20181196）

Toughness enhancement for interlaminar fracture composite based on carbon nanotube films

YU Yanyan^1,2, ZHANG Yuan³, GAO Limin⁴, QU Shuxuan², LYU Weibang²

1. School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei 230026, China;
2. Innovation Center for Advanced Nanocomposites, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China;
3. Second Manufacturing Department, Shanghai Composites Science and Technology Limited Company, Shanghai 201112, China;
4. Department of Structural Integrity, COMAC Beijing Aeronautical Science & Technology, Beijing 102211, China

Received:2019-01-09 Revised:2019-01-23 Online:2019-10-15 Published:2019-03-01
Supported by:
National Natural Science Foundation of China Young Scientists Fund(51503225); Jiangsu Natural Science Foundation (BK20181196)

摘要/Abstract

摘要： 通过浮动催化化学气相沉积法制备连续碳纳米管薄膜，并将其原位沉积到单向碳纤维织物表面，手工铺层后借助真空辅助树脂传递模塑成型（VARTM）工艺制备碳纳米管-碳纤维/环氧树脂复合材料层压板，研究不同面密度的碳纳米管薄膜对层压板Ⅱ型层间断裂韧性的影响。结果表明，随着碳纳米管薄膜面密度的增加，层压板Ⅱ型层间断裂韧性先逐渐提高，当碳纳米管薄膜面密度为9.64 g/m²时，层压板Ⅱ型层间断裂韧性最佳，与原始层压板相比提高了94%。碳纳米管通过桥接树脂裂纹、从树脂中拔出等方式提高层间断裂韧性。当碳纳米管面密度超过临界值时，会引起树脂浸润困难，导致增韧效果降低。

关键词: 碳纳米管薄膜, 原位沉积, 真空辅助树脂传递模塑成型, 复合材料, Ⅱ型层间断裂韧性

Abstract: To enhance the interlaminar toughness of laminated composites, the continuous Carbon NanoTube (CNT) film made by the floating catalyst chemical vapor deposition method is in-situ deposited on the surface of unidirectional carbon fiber fabrics. The CNT film interleaved carbon fiber/epoxy laminated composites are then fabricated by using the Vacuum Assisted Resin Transfer Molding (VARTM) processing. The effect of the areal density of the CNT film on the mode II fracture toughness of these hybrid composites is analyzed. The testing results indicated that mode Ⅱ fracture toughness initially increased gradually with the increase of the areal density of the CNT film. When the areal density of the CNT film is about 9.64 g/m², mode Ⅱ fracture toughness of the laminate increased by 94% compared with that without the CNT film interleaving. Microcrack bridging by CNTs and CNT pulling-out from the resin are found to be the main mechanisms of toughening. Upon further increasing the areal density of CNT films, mode Ⅱ fracture toughness deceased, which is mainly due to fact that CNT films might not be fully wetted by the resin as they are getting thicker.

Key words: carbon nanotube film, in-situ deposition, vacuum assisted resin transfer molding, composites, mode Ⅱ fracture toughness

中图分类号:

V258⁺.3

于妍妍, 张远, 高丽敏, 曲抒旋, 吕卫帮. 基于碳纳米管薄膜的复合材料层间增韧[J]. 航空学报, 2019, 40(10): 422900-422900.

YU Yanyan, ZHANG Yuan, GAO Limin, QU Shuxuan, LYU Weibang. Toughness enhancement for interlaminar fracture composite based on carbon nanotube films[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(10): 422900-422900.

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

基于碳纳米管薄膜的复合材料层间增韧

Toughness enhancement for interlaminar fracture composite based on carbon nanotube films

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