以具有优异弹性的氨纶作为基底,将具有良好导电性和柔性的碳纳米管薄膜以不同的包覆角度和层数缠绕在氨纶上,通过调节碳纳米管薄膜交叠层数、包覆角度以及采用聚苯胺、纳米银线等作为夹心层,制得的银纳米线包覆的夹心型碳纳米管/氨纶复合导线的电阻率变化最小,在拉伸45%条件下电阻变化率仅为0.71%。有望在可拉伸电子器件领域得到广泛的应用。
By using the highly stretchable spandex as the core,and winding CNT sheets around it under different angle and number of sheets,a novel stretchable conducting wire was prepared.By adjusting the number of winding CNT sheets,the angle,using polyaniline and nanosilver,etc.to make sandwich structure.The nanosilver sandwich structure had the smallest changes in resistivity and the resistance can change only by 0.71% at a tensile strain of 45%,showing great possibility for the application in stretchable electronic devices.
[1] Bernholc J,Brenner D,Nardelli M B,et al.Mechanical and electrical properties of nanotubes[J].Annual Review of Materials Research,2002,32:347-375.
[2] Baughman R H,Zakhidov A A,De Heer W A.Carbon nanotubes-the route toward applications[J].Science,2002,297(5582):787-792.
[3] De Volder Mfl,Tawfick S H,Baughman R H,et al.Carbon nanotubes:present and future commercial applications[J].Science,2013,339(6119):535-539.
[4] Natsuki T,Endo M.Stress simulation of carbon nanotubes in tension and compression[J].Carbon,2004,42(11):2147-2151.
[5] Ozaki T,Iwasa Y,Mitani T.Stiffness of single-walled carbon nanotubes under large strain[J].Physical Review Letters,2000,84(8):1712-1715.
[6] Salvetat J P,Briggs G A D,Bonard J M,et al.Elastic and shear moduli of single-walled carbon nanotube ropes[J].Physical Review Letters,1999,82(5):944-947.
[7] Treacy M M J,Ebbesen T W,Gibson J M.Exceptionally high youngs modulus observed for individual carbon nanotubes[J].Nature,1996,381(6584):678-680.
[8] Pan S W,Yang Z B,Chen P N,et al.Wearable solar cells by stacking textile electrodes[J].Angewandte Chemie-International Edition,2014,53(24):6110-6114.
[9] Ryu S,Lee P,Chou J B,et al.Extremely elastic wearable carbon nanotube fiber strain sensor for monitoring of human motion[J].Acs Nano,2015,9(6):5929-5936.
[10] Zu M,Li Q W,Wang G J,et al.Carbon nanotube fiber based stretchable conductor[J].Advanced Functional Materials,2013,23(7):789-793.
[11] Xu F,Wang X,Zhu Y T,et al.Wavy ribbons of carbon nanotubes for stretchable conductors[J].Advanced Functional Materials,2012,22(6):1279-1283.
[12] Yang Z B,Deng J,Chen X L,et al.A highly stretchable,fiber-shaped supercapacitor[J].Angewandte Chemie-International Edition,2013,52(50):13453-13457.
[13] Baughman R H.Playing natures game with artificial muscles[J].Science,2005,308(5718):63-65.
[14] Liu Z F,Fang S,Moura F A,et al.Hierarchically buckled sheath-core fibers for superelastic electronics,sensors,and muscles[J].Science,2015,349(6246):400-404.
[15] Wang H Y,Liu Z F,Ding J N,et al.Downsized sheath-core conducting fibers for weavable superelastic wires,biosensors,supercapacitors,and strain sensors[J].Advanced Materials,2016,28(25):4998-5007.
[16] Zhang Y,Bai W Y,Ren J,et al.Super-stretchy lithium-ion battery based on carbon nanotube fiber[J].Journal of Materials Chemistry A,2014,29(2):11054-11059.
[17] Ren J,Zhang Y,Bai W Y,et al.Elastic and wearable wire-shaped lithium-ion battery with high electrochemical performance[J].Angewandte Chemie-International Edition,2014,53(30):7864-7869.
[18] Cai L,Li J Z,Luan P S,et al.Highly transparent and conductive stretchable conductors based on hierarchical reticulate single-walled carbon nanotube architecture[J].Advanced Functional Materials,2012,22(24):5238-5244.
[19] Li Q W,Zhang X F,DePaula R F,et al.Sustained growth of ultralong carbon nanotube arrays for fiber spinning[J].Advanced Materials,2006,18(23):3160- .
[20] Li S,Zhang X H,Zhao J N,et al.Enhancement of carbon nanotube fibres using different solvents and polymers[J].Composites Science and Technology,2012,72(12):1402-1407.
[21] Amjadi M,Kyung K U,Park I,et al.Stretchable,skin-mountable,and wearable strain sensors and their potential applications:a review[J].Advanced Functional Materials,2016,26(11):1678-1698.
[22] Amjadi M,Pichitpajongkit A,Lee S,et al.Highly stretchable and sensitive strain sensor based on silver nanowire-elastomer nanocomposite[J].Acs Nano,2014,8(5):5154-5163.
基金资助
国家自然科学基金(51561145008,21503267,11404371);江苏省青年基金项目(BK20140390);中国科学院青年创新促进会基金(2015256)