无纺布增强碳纤维层合板Ⅰ型层间断裂韧性研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (6): 22-27.

无纺布增强碳纤维层合板Ⅰ型层间断裂韧性研究

翁添虎, 祖磊, 曹东风, 彭昊阳

武汉理工大学材料科学与工程学院,武汉430070

收稿日期:2017-11-06 出版日期:2018-06-28 发布日期:2018-06-28
通讯作者: 胡海晓(1987-),男,博士,主要从事复合材料性能表征与结构设计方面的研究,yiming9008@126.com。
作者简介:翁添虎(1993-),男,硕士研究生,主要从事复合材料性能表征与结构设计方面的研究。
基金资助:
武汉理工大学材料复合新技术国家实验室航空自然科学基金(20152365002)

MODE-Ⅰ INTERLAMINAR FRACTURE TOUGHNESS OF CARBON FIBERLAMINATES BY NON-WOVEN INTERLEAF VEILS

WENG Tian-hu, ZU Lei, CAO Dong-feng, PENG Hao-yang

School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

Received:2017-11-06 Online:2018-06-28 Published:2018-06-28

摘要/Abstract

摘要： 与传统的改善层合板层间断裂韧性的方法相比,无纺布层间增韧技术工艺措施更简便、应用对象更灵活,且兼具低成本优势。通过将PPS、PEI、PI三种无纺布加入碳纤维层合板中面层与未增韧试样对比,结果表明,PPS无纺布的加入对Ⅰ型层间断裂韧性能量释放率提高效果最为显著。并于试验中观察到了Ⅰ型加载下,该组试样裂纹尖端存在纤维桥联效应。结合SEM手段获取的层合板断面微观结构信息验证了短纤维无纺布中间层在基体中形成了三维交织的纤维网络,纤维的脱粘和拔出对分层裂纹起到了较好的阻碍作用,从而提升了层间断裂韧性。

关键词: 复合材料, 层合板, 层间增韧, 无纺布

Abstract: Compared with the traditional method to improve interlaminar fracture toughness of laminates, non-woven veils interlayer toughening technology is more convenient, more flexible and has the advantage of low cost. In this paper, three non-woven veils, PPS, PEI and PI, were added to the carbon fiber laminates and compared with the non-toughened specimens. The results show that the addition of PPS non-woven veils has the most significant effect on the interlaminar fracture toughness energy release rate of mode-Ⅰ. The fiber bridging effect was observed under mode-Ⅰ loading at the crack tip of the specimens. Microstructure information of laminates was obtained by SEM, and it is proved that the short fiber non-woven veils interlayer forms a three-dimensional interlaced fiber network in the matrix. The debonding and pulling out of the fiber play an important role to hinder the delamination crack. Thus, the interlaminar fracture toughness is improved.

Key words: composite, composite laminates, interlaminar toughness, non-woven veils

中图分类号:

TB332

翁添虎, 祖磊, 曹东风, 彭昊阳. 无纺布增强碳纤维层合板Ⅰ型层间断裂韧性研究[J]. 玻璃钢/复合材料, 2018, 0(6): 22-27.

WENG Tian-hu, ZU Lei, CAO Dong-feng, PENG Hao-yang. MODE-Ⅰ INTERLAMINAR FRACTURE TOUGHNESS OF CARBON FIBERLAMINATES BY NON-WOVEN INTERLEAF VEILS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(6): 22-27.

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