Details

Autor(en) / Beteiligte

• Fu, Baiqiao
• Ren, Penggang
• Guo, Zhengzheng
• Du, Yanli
• Jin, Yanling
• Sun, Zhenfeng
• Dai, Zhong
• Ren, Fang

Titel

Construction of three-dimensional interconnected graphene nanosheet network in thermoplastic polyurethane with highly efficient electromagnetic interference shielding

Ist Teil von

• Composites. Part B, Engineering, 2021-06, Vol.215, p.108813, Article 108813

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The achievement of favorable electromagnetic interference shielding at low filler loading integrated with good durability, excellent flexibility is still a great challenge for flexible and wearable electric devices. Herein, graphene nanosheets (GNSs) wrapped melamine foam (MF) (GNSs@MF) is successfully fabricated by repeated dip-drying method using MF skeleton as substrate. The resultant scaffold with interconnected GNSs layer is further infiltrated with thermoplastic polyurethane (TPU). Benefiting from such unique three-dimensional (3D) electrically conductive network, a high electrical conductivity of 45.2 S/m and an exceptional electromagnetic interference (EMI) shielding effectiveness (EMI SE) of 35.6 dB in the X-band are achieved at only 2.01 vol% GNSs loading and 2 mm thickness of TPU-GNSs@MF composites. Importantly, the excellent EMI SE is reliable even the prepared composites undergoing vigorous physical, chemical damages and long-term compression cycles due to the protection of TPU layer and inherent elasticity of MF. In view of the prominent comprehensive performance of the TPU-GNSs@MF composites, this work provides a facile and scalable fabrication of highly-efficient EMI shielding composites for the next-generation portable and wearable electronic devices.