Multifunctional primer film made from percolation enhanced CNT/Epoxy nanocomposite and ultrathin CNT network
Multifunctional primer film made from percolation enhanced CNT/Epoxy nanocomposite and ultrathin CNT network
复制标题
DOI：
10.1016/j.compositesb.2019.107107
复制
发表时间：
2019-10-15
影响因子：
13.1
通讯作者：
Jung, Yung Joon
中科院分区：
文献类型：
--
作者：
Kim, Hyehee;Gao, Sen;Jung, Yung Joon
在这里，我们展示了一种高性能的多功能薄底漆膜，由三明治结构的碳纳米管（CNT）网络和碳纳米管-环氧树脂纳米复合材料制成。为此，渗滤增强CNT-环氧树脂纳米复合材料的制备通过混合碳纳米管与两个极端不同的长度/直径的纵横比，然后由一个独特的对流涂层过程组装成的单壁碳纳米管疏水性CNT-环氧树脂基板上的光滑，均匀和大规模的膜没有任何预处理的表面。这种多功能夹层膜具有相对低的表面粗糙度，高导电性，对聚合物和金属的优异粘附性，以及在8.2-12.4 GHz（X波段）范围内32.54 dB的可调高EMI屏蔽效能。这些结果为设计可用于制造混合热管理系统、EMI屏蔽膜和结构集成传感器的多功能底漆薄膜开辟了道路。
Here we demonstrate a high performance multifunctional thin primer film made from sandwich structured ultrathin carbon nanotube (CNT) networks and carbon nanotube-epoxy nanocomposite. For this, percolation enhanced CNT-epoxy nanocomposites were fabricated by mixing CNTs with two extremely different length/diameter aspect ratios followed by a unique convective coating process assembling SWNTs into ultrathin, uniform and large-scale film on hydrophobic CNT-epoxy substrates without any pretreatment of the surface. This multifunctional-sandwiched film exhibits relatively low surface roughness, high conductivities, excellent adherence to both polymers and metals, and tunable high EMI-shielding effectiveness of 32.54 dB in the range of 8.2-12.4 GHz (X-band). These results open the pathway to design multifunctional primer thin films that can be used for fabricating hybrid thermal management systems, EMI shielding film and structurally integrated sensors.