Electrothermally Self-Healing Delamination Cracks in Carbon/Epoxy Composites Using Sandwich and Tough Carbon Nanotube/Copolymer Interleaves.
Electrothermally Self-Healing Delamination Cracks in Carbon/Epoxy Composites Using Sandwich and Tough Carbon Nanotube/Copolymer Interleaves.
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DOI：
10.3390/polym14204313
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发表时间：
2022-10-14
期刊：
影响因子：
5
通讯作者：
Wu Z
中科院分区：
文献类型：
--
作者：
Ouyang Q;Liu L;Wu Z
本文提出了两种由碳纳米管（CNT）和乙烯-甲基丙烯酸共聚物（EMAA）组成的夹层多孔夹层结构，通过原位电加热CNT，可同时对碳纤维增强塑料（CFRP）层间界面进行增韧和自愈合。测量了临界应变能释放率模式I（GIC）和II（GIIC），以评估夹层的增韧和自修复效率。结果表明，与CFRP基体相比，CNT-EMAA-CNT复合材料的GIC和GIIC分别提高了24.0%和15.2%，其自修复效率分别达到109.7-123.5%和90.6-91.2%;同时，EMAA-CNT-EMAA插层可使GIC和GIIC分别提高66.9%和16.7%，GIC和GIIC的相应自愈效率分别为122.7-125.9%和93.1- 94.7%。因此，这两种插入物在层间断裂韧性上显示出良好的增韧和自愈合效率。具体地，EMAA-CNT-EMAA夹层具有更好的多功能性，即，增韧能力适中，但通过电加热的自愈合效率显著，优于传统的纯EMAA夹层和基于烘箱的加热愈合方法。
Herein, two sandwich and porous interleaves composed of carbon nanotube (CNT) and poly(ethylene-co-methacrylic acid) (EMAA) are proposed, which can simultaneously toughen and self-heal the interlaminar interface of a carbon fiber-reinforced plastic (CFRP) by in situ electrical heating of the CNTs. The critical strain energy release rate modes I (GIC) and II (GIIC) are measured to evaluate the toughening and self-healing efficiencies of the interleaves. The results show that compared to the baseline CFRP, the CNT-EMAA-CNT interleaf could increase the GIC by 24.0% and the GIIC by 15.2%, respectively, and their respective self-healing efficiencies could reach 109.7–123.5% and 90.6–91.2%; meanwhile, the EMAA-CNT-EMAA interleaf can improve the GIC and GIIC by 66.9% and 16.7%, respectively, and the corresponding self-healing efficiencies of the GIC and GIIC are 122.7–125.9% and 93.1–94.7%. Thus, both the interleaves show good toughening and self-healing efficiencies on the interlaminar fracture toughness. Specifically, the EMAA-CNT-EMAA interleaf possesses better multi-functionality, i.e., moderate toughening ability but notable self-healing efficiency via electrical heating, which is better than the traditional neat EMAA interleaf and oven-based heating healing method.
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影响因子：
5
作者：
Cescato R;Rigotti D;Mahmood H;Dorigato A;Pegoretti A
通讯作者：
Pegoretti A
影响因子：
3.3
作者：
Kostopoulos, V.;Kotrotsos, A.;Bosman, A. W.
通讯作者：
Bosman, A. W.
DOI：
10.1016/j.compositesa.2021.106566
发表时间：
2021-08-03
影响因子：
8.7
作者：
Loh, T. W.;Ladani, R. B.;Mouritz, A. P.
通讯作者：
Mouritz, A. P.
影响因子：
6.3
作者：
Pingkarawat, K.;Mouritz, A. P.
通讯作者：
Mouritz, A. P.
影响因子：
9.1
作者：
Jimenez-Suarez, A.;Martin-Gonzalez, J.;Prolongo, S. G.
通讯作者：
Prolongo, S. G.