Electrically conductive and electromagnetic interference shielding of polyethylene composites with devisable carbon nanotube networks

2015 ◽  
Vol 3 (36) ◽  
pp. 9369-9378 ◽  
Author(s):  
Li-Chuan Jia ◽  
Ding-Xiang Yan ◽  
Cheng-Hua Cui ◽  
Xin Jiang ◽  
Xu Ji ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electromagnetic Interference ◽  
Electromagnetic Interference Shielding ◽  
Electrically Conductive ◽  
Carbon Nanotube Networks ◽  
Emi Se ◽  
Segregated Structure ◽  
Polyethylene Composites

A segregated structure results in an EMI SE up to 46.4 dB in CNT/polyethylene composites with only 5 wt% CNTs.

scholarly journals Segregated poly(arylene sulfide sulfone)/graphene nanoplatelet composites for electromagnetic interference shielding prepared by the partial dissolution method

RSC Advances ◽  
2020 ◽  
Vol 10 (35) ◽  
pp. 20817-20826
Author(s):  
Jia-Cao Yang ◽  
Xiao-Jun Wang ◽  
Gang Zhang ◽  
Zhi-Mei Wei ◽  
Sheng-Ru Long ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Electromagnetic Interference ◽  
Dissolution Process ◽  
Electromagnetic Interference Shielding ◽  
Graphene Nanoplatelet ◽  
High Mechanical Strength ◽  
Dissolution Method ◽  
Partial Dissolution ◽  
Emi Se ◽  
Segregated Structure

The segregated structure prepared by controlling the dissolution process endows the composites with both excellent EMI SE and high mechanical strength.

A strong and tough polymer–carbon nanotube film for flexible and efficient electromagnetic interference shielding

2017 ◽  
Vol 5 (35) ◽  
pp. 8944-8951 ◽  
Author(s):  
Li-Chuan Jia ◽  
Meng-Zhu Li ◽  
Ding-Xiang Yan ◽  
Cheng-Hua Cui ◽  
Hong-Yuan Wu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electromagnetic Interference ◽  
Electromagnetic Interference Shielding ◽  
Carbon Nanotube Film ◽  
Emi Se

A strong and tough CNT-NR film with excellent EMI SE (44.7 dB@250 μm) is realized.

Ultralow percolation threshold and enhanced electromagnetic interference shielding in poly(l-lactide)/multi-walled carbon nanotube nanocomposites with electrically conductive segregated networks

2017 ◽  
Vol 5 (36) ◽  
pp. 9359-9369 ◽  
Author(s):  
Kai Zhang ◽  
Gen-Hui Li ◽  
La-Mei Feng ◽  
Ning Wang ◽  
Jiang Guo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Percolation Threshold ◽  
Electromagnetic Interference ◽  
High Performance ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Electrically Conductive ◽  
Multi Walled Carbon Nanotube

Segregated PLLA/MWCNTs nanocomposites were synthesized with high-performance EMI shielding.

Electromagnetic Interference Shielding Performances of MWCNT in Concrete Composites

2017 ◽  
Vol 266 ◽  
pp. 283-286
Author(s):  
Mahadi Sharif ◽  
Chew Sue Ping ◽  
Kin Yuen Leong
Keyword(s):  
Carbon Nanotube ◽  
Electric Field ◽  
Incident Wave ◽  
Electromagnetic Interference ◽  
Network Analyzer ◽  
Shielding Effectiveness ◽  
Frequency Range ◽  
Electromagnetic Interference Shielding ◽  
Emi Se ◽  
Shielding Material

Carbon nanotube (CNT) acts as electromagnetic interference shielding material in concrete composites was presented in this paper. Three concrete samples respectively with different CNT contents were casted and experimentally tested their shielding effectiveness (SE). The SE measurements which were obtained in function of frequency were taken using vector network analyzer (VNA) in the frequency range of 2.4 - 4.0 GHz. The experimental results showed that the CNT contributes to change in conductivity due to the positioning of the electric field of the incident wave and thus, produces different shielding performances. The EMI SE of concrete composites is improved up to 41dB with CNT concentration of 1.5-2.0 wt%.

A facile method to improving the electromagnetic interference shielding of a free-standing and foldable carbon nanotube mat

RSC Advances ◽  
2016 ◽  
Vol 6 (67) ◽  
pp. 62485-62490 ◽  
Author(s):  
Zi Ping Wu ◽  
Ting Liu ◽  
De Ming Chen ◽  
Gao Wu ◽  
Qing Hui Wang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Saturation Magnetization ◽  
Electromagnetic Interference ◽  
Electrical Resistance ◽  
High Saturation Magnetization ◽  
Electromagnetic Interference Shielding ◽  
Free Standing ◽  
High Saturation ◽  
Mat Thickness ◽  
Emi Se

Free-standing and foldable CNT mats with high saturation magnetization and low electrical resistance were prepared, and a high EMI SE of 40.4–60.3 dB can be achieved at frequency ranges of 1 GHz to 18 GHz with a low mat thickness of 1.0 μm.

scholarly journals Light-Weight Multi-Walled Carbon Nanotube Buckypaper/Glass Fiber-Epoxy Composites for Strong Electromagnetic Interference Shielding and Efficient Microwave Absorption

2021 ◽  
Author(s):  
Bruno Ribeiro ◽  
Newton Adriano Gomes ◽  
Mirabel Cerqueira Rezende
Keyword(s):  
Carbon Nanotube ◽  
Glass Fiber ◽  
Electromagnetic Interference ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Multi Walled Carbon Nanotube ◽  
X Band ◽  
Potential Applications ◽  
Emi Se ◽  
Minimum Reflection Loss

Abstract Multi-walled carbon nanotube buckypaper (BP) reinforced glass fiber-epoxy (GF/EP) composites were selected to fabricate electromagnetic interference (EMI) shielding and microwave absorbing composites. Six different composite configurations with 3.0 mm thick have been conceived and tested over the X-band (8.2-12.4 GHz). Flexible and low density (0.29 g/cm3) BP provided a high specific EMI SE of 55 dB with controlled electrical conductivity. GF/EP/BP111 and GF/EP/BP101 composites possess EMI SE as high as of 50-60 dB, which can be attributed to the number of BP inserted and variation in the wave-transmitting layer of the laminates. Furthermore, the shielding mechanism was discussed, and it suggested that the dominant contribution to EMI SE was absorption. GF/EP/BP110 laminate demonstrated suitable EMI performance (~20 dB) and excellent microwave performance, achieving an effective -10 dB bandwidth of 3.04 GHz and minimum reflection loss (RL) value of -21.16 dB at 10.37 GHz. On the basis of these results, GF/EP/BP composites prepared in this work have potential applications as both EMI shielding and microwave absorber materials given their facile preparation and lightweight use.

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