Ultrathin flexible electrospun EVA nanofiber composite with electrothermally-driven shape memory effect for electromagnetic interference shielding

Research Progress with Membrane Shielding Materials for Electromagnetic/Radiation Contamination

“…Although the density, flexibility and corrosion resistance of metal-based membrane shielding materials have been greatly improved, their flexible wear performance is still greatly limited [ 107 ]. The use of polymer-based membrane shielding materials can not only mitigate the disadvantages of metal-based materials (such as their high density, susceptibility to corrosion, difficult preparation, and high cost), but also address the challenges encountered with the design of polymer-based materials [ 28 ]. In polymer technology, two kinds of materials with different properties can be combined through the use of a mixed filler system so that the resulting composite material has specific properties, which is called a filled polymer-based membrane shielding material [ 26 ].…”

“…The higher the electrical conductivity, the better the electromagnetic shielding performance. However, traditional ECPCs have some significant shortcomings, such as the strong π-π interactions that occur between conductive fillers with high specific surface area, which increase their tendency to aggregate and thereby make it difficult to obtain a uniform dispersion of fillers in the polymer matrix [ 28 , 109 , 110 , 111 ]. In addition, there are many free interfaces between conductive fillers and the polymer matrix, which hinder the continuous transmission of electrons.…”

“…For many years, researchers have studied numerous kinds of membrane shielding materials to deal with radiation pollution caused by electromagnetic/radiation, such as metal-based [ 23 , 24 , 25 ], polymer-based [ 26 , 27 , 28 ], concrete-based [ 9 , 29 , 30 ], lead-based [ 31 , 32 , 33 ], boron-based [ 34 ] materials, as well as other examples of widely used membrane shielding materials. However, with the rapid pace of technological development, the above-mentioned membrane shielding materials can no longer meet the problem of electromagnetic/radiation pollution caused by many types of modern technological devices.…”

Configurational Entropy Regulation in Polyolefin Elastomer/Paraffin Wax Vitrimers by Thermally Responsive Liquid–Solid Transition for Force Storage

“…Shape memory polymers (SMPs) can change their shape in response to external stimuli, such as light, − heat, − electricity, − and so on, showing great potential for applications in actuators, soft robotics, and medical technology. Chemically cross-linked polymers can exhibit one-way shape memory by taking glass transition temperature or melting temperature as the critical temperature.…”

Multifunctional CoFe2O4@MXene-AgNWs/Cellulose Nanofiber Composite Films with Asymmetric Layered Architecture for High-Efficiency Electromagnetic Interference Shielding and Remarkable Thermal Management Capability

“…With the flourishing growth of information technology, especially the explosive advance of miniaturized, highly integrated and high-power electronic devices in the fifth-generation communication era, serious electromagnetic interference (EMI) radiation pollution and undesirable heat accumulation are inevitably generated during operation. − Overheating and ubiquitous EMI pollution not only deteriorate the dependability and lifetime of equipment, but also have an adverse effect on human health. − Meanwhile, the booming spread of portable and wearable electronic devices proposes more flexible and thinner requirements for materials. − To effectively mitigate the EMI radiation and dissipate the accumulative heat for next-generation smart electronics, exploring ultrathin and flexible materials with high EMI shielding effectiveness (SE) and excellent thermal conductivity (TC) is urgently required.…”