Ultralight and flexible graphene foam coated with Bacillus subtilis as a highly efficient electromagnetic interference shielding film

Xing, Chitian; Zhu, Shenglong; Ullah, Zaka; Pan, Xiaochun; Wu, Fan; Zuo, Xiaobo; Liu, Jianfei; Chen, Mingliang; Li, Weiwei; Li, Qi; Liu, Liwei

doi:10.1016/j.apsusc.2019.06.107

Cited by 35 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result can be explained by the Simon formula, in that EMI SE is not strictly proportional to thickness. Note that the SSE/ t value of EGF1500 at 10 μm is higher than those of Cu foil at 10 μm (7812 dB cm 2 g –1 ) and the Al foil at 8 μm (30555 dB cm 2 g –1 ), and surpass those of most of the reported works, which includes graphene film prepared by other methods, MXene film, CNT, graphene foam, and graphene-based polymers. ,,,,,− (Figure b and Table S4).…”

Section: Resultsmentioning

confidence: 80%

Ultrathin Flexible Graphene Film for High-Performance Electromagnetic Interference Shielding via Infrared-Assisted Rapid Thermal Shock Exfoliation

Zhang

Yan

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Lightweight, flexible, and high-strength electromagnetic interference (EMI) shielding materials with high shielding effectiveness (SE) are desirable for portable/wearable electronics. Here, we reported an efficient synthesis of a highly aligned conductive graphene film by an infrared-assisted rapid thermal shock exfoliation. Benefiting from its noncontact thermal radiation heating with a homogeneous and efficient thermal field, gas is rapidly generated from graphene oxide films. This results in a sharp increase in the interlayer pressure and thus forms a mesoporous interlayer structure, which could be compressed into compact films with enhanced conductivity and mechanical strength. A relatively low-temperature treatment at 1500 °C healed partial defects in graphene sheets and gave an ultrathin (∼10 μm) graphene film with remarkable properties of high electrical conductivity of ∼1500 S cm −1 , a high EMI SE of 52 dB in the X band, and high tensile strength of up to 160 MPa. This time-saving fabrication process makes graphene film a competitive candidate for practical EMI shielding applications.

show abstract

Section: Resultsmentioning

confidence: 80%

Ultrathin Flexible Graphene Film for High-Performance Electromagnetic Interference Shielding via Infrared-Assisted Rapid Thermal Shock Exfoliation

Zhang

Yan

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Second, the cells created additional interfaces, which promoted inner reflection and refraction of electromagnetic waves. [ 53 ] Finally, MWCNT were arranged along the cell wall, contributing to further weakening of the electromagnetic wave by both reflection and absorption. [ 54 ] From the results, the poor foaming effect in Group A1 led to uneven cell diameter and fusion, which were negative for conductive network construction; thus, the EMI SE was only increased by 12.3%.…”

Section: Resultsmentioning

confidence: 99%

Effect of in situ fibrillation on polyethylene/poly(ethylene terephthalate)/multiwalled carbon nanotube electromagnetic shielding foams

Song

et al. 2021

Polymer Engineering & Sci

View full text Add to dashboard Cite

In this study, polyethylene (PP)/polyethylene terephthalate (PET)/multiwalled carbon nanotube (MWCNT) nanocomposites with nanofibrillary structure were processed by hot drawing‐assisted extrusion technology, and nonfoaming and microfoaming samples were processed by injection molding machine. Scanning electron microscope micrographs showed that when PET content was 2.5 wt%, PET fibers had a larger aspect ratio, which brought an outstanding promotion on microfoaming of PP matrix, and further details were provided by DSC and rheology analysis. When foaming sample loaded with 2.5 wt% PET and 3 wt% MWCNT, the best shielding effectiveness achieved 29.91 dB·cm3·g−1 in the test frequency range about 8.2–12.4 GHz. The results proved that the introduction of PET fibers optimized the microfoaming effect, and the uniform cell structure promoted the MWCNT dispersion and internal reflection of electromagnetic wave. Therefore, the shielding property is absorption‐dominated type and meets the requirements of lightweight and ultraefficient shielding demand of industry.

show abstract

NPs for Polymer-Based EMI Shielding and Fire Retarding Nanocomposites

Ray,

Temane,

Orasugh

2024

Graphene-Bearing Polymer Composites

View full text Add to dashboard Cite

Ultralight and flexible graphene foam coated with Bacillus subtilis as a highly efficient electromagnetic interference shielding film

Cited by 35 publications

References 25 publications

Ultrathin Flexible Graphene Film for High-Performance Electromagnetic Interference Shielding via Infrared-Assisted Rapid Thermal Shock Exfoliation

Ultrathin Flexible Graphene Film for High-Performance Electromagnetic Interference Shielding via Infrared-Assisted Rapid Thermal Shock Exfoliation

Effect of in situ fibrillation on polyethylene/poly(ethylene terephthalate)/multiwalled carbon nanotube electromagnetic shielding foams

NPs for Polymer-Based EMI Shielding and Fire Retarding Nanocomposites

Contact Info

Product

Resources

About