Structural effects in a composite nonwoven fabric on EMI shielding

Fabrication of Nonwetting Flexible Free‐Standing MXene‐Carbon Fabric for Electromagnetic Shielding in S‐Band Region

“…Raman spectroscopy is an excellent choice to examine the structural and crystalline nature of Ti 3 AlC 2 , Ti 3 C 2 T x , and fabric . Figure exhibits the plotted Raman spectrum explaining the properties of Ti 3 AlC 2 , Ti 3 C 2 T x , noncoated fabric, and CFCF composites between 200 and 3500 cm −1 Raman shift.…”

“…Hence, nonwoven fabrics are excellent runner as it is possessing tunable physiochemical properties for EMI shielding and replace the metals . In addition, functionalized the carbon fibers (CFs) by using other materials such as MXene, NP, graphene, carbon nanotube, and polymers improve the properties of the carbon fabric toward EMI shielding . Following parameters influence EMI shielding of CF nonwoven fabric (CFCF) such as areal density, thickness, concentration of CF, array of the CF, and CF length.…”

“…Following parameters influence EMI shielding of CF nonwoven fabric (CFCF) such as areal density, thickness, concentration of CF, array of the CF, and CF length. EMI shielding of CFCF increases with increasing areal density, CF length, concentration of CF, and thickness …”

Fabrication of gradient vapor grown carbon fiber based polyurethane foam for shape memory driven microwave shielding

“…Rapid development of advanced intelligence security and smart electronic equipment has led to demand for functional EM shielding devices, which can respond to external stimulus (i.e., electricity, heat, and light) or/and have tunable shielding effect, such as controllable EM shielding switch for cutoff and reception of EM signals. [17][18][19][20][21][22][23][24] For example, Wang and co-workers have reported a kind of hydro-sensitive sandwich structure by embedding porous polypropylene non-woven spacers into highly conductive pyrolytic graphite papers. In the presence and absence of polar water molecules, porous spacers achieved a switchable structural transformation through polar induced interfaces.…”

Effect of preparation methods on electrical and electromagnetic interference shielding properties of PMMA/MWCNT nanocomposites

“…Kazemi et al found that annealing at 150 °C under a supercritical carbon dioxide pressure of 31Mpa reduced the percolation threshold of polypropylene (PP)/MWCNT composites by 50%. Some other methods to control the state of CNT in matrix were also developed to improve the electrical conductivity and EMI shielding performance of composites containing CNT as fillers, for example, functionalization of CNTs , using hybrid fillers , foaming , matrix modification , and constructing segregated structures . Shi et al found that poly(L‐lactide)/poly(ε‐caprolactone)/MWCNT/Ni composites with segregated conductive networks showed anisotropic conductivity when Ni particles were aligned by a low magnetic field.…”