Frequency-selective and tunable electromagnetic shielding effectiveness via the sandwich structure of silicone rubber/graphene composite

Fabrication of Cellulose Nanofiber/Reduced Graphene Oxide/Nitrile Rubber Flexible Films Using Pickering Emulsion Technology for Electromagnetic Interference Shielding and Piezoresistive Sensor

“…The values of the composite films at 10.3 GHz were higher than the thickness value of the corresponding test samples, which indicates that the EMI performance of the film can be significantly improved by increasing the sample thickness. Remarkably, the CNF-RGO/NBR composite film had superior EMI shielding effectiveness and ultrathin thickness compared with other EMI shielding materials [22][23][24][25][26]40,[47][48][49][50][51][52][53] (Figure 6d), which indicates that the CNF-RGO/NBR composite film has good potential as an ultrathin, flexible, and highly efficient EMI shielding material.…”

“…Additionally, the SE total value of the CNF-RGO/NBR film gradually increased with the GO mass fraction, which may have resulted from the increase of the electrical conductivity of these films with the GO mass fraction. To further elucidate the mechanism of EM shielding, the comparison of the total EMI shielding effectiveness (SE total ), microwave absorption (SE A ), and microwave reflection (SE R ) at the frequency of 10.2 GHz for the obtained CNF-RGO/NBR composite films with [22][23][24][25][26]40,[47][48][49][50][51][52][53] (the hollow shape indicates that the composite material is not flexible).…”

“…This composite has selective EM shielding performance, low filler content, and exhibited an insulation property in the shielding direction. [25] Liu et al [26] introduced a type of RGO-CNT hybrid filler network into styrene-butadiene rubber (SBR) to form highly conductive and stretchable composites using the emulsion blending freeze-drying and hot-pressing processes. The RGO-CNT hybrids with a sandwich structure effectively prevented the restacking of graphene sheets and the agglomeration of CNTs, and thereby significantly increased the electrical conductivity of the SBR composites.…”

Effects of crosslinking reaction and extension strain on the electrical properties of silicone rubber/carbon nanofiller composites

“…With the rapid development of the wearable electronic devices industry, stretchable conductive silicone rubber (SR) composite as an important component has attracted much attention, especially in the field of flexible sensors, [1][2][3] electronic skins, [4][5][6] and electromagnetic shielding. [7][8][9] SR is commonly used in conductive composites for wearable electronic devices because of its excellent thermal and chemical stability, good biocompatibility, and low elastic modulus. 10,11 Crosslinking is an indispensable process for the application of the SR composites.…”

Efficiently Enhancing Low-dielectric Properties and Chemical Resistances of Addition-cure Liquid Silicone Rubber by Filling With Silicone-modified Eucommia Gum Nanofiller

“…Therefore, it is imperative to develop an effective strategy to enhance the mechanical properties and erosion resistance of ALSR. To overcome these problems, an effective method is to disperse nanoparticles into the ALSR, such as clay [15], TiO 2 [16][17][18][19], SiO 2 [20][21][22][23], graphene [24][25][26][27], carbon nanotubes [28,29], boron nitride (BN) [30,31], and aluminum nitride (AlN) [32]. However, due to the high permittivities and poor compatibility of these materials with ALSR, the dielectric constant of the ALSR signi cantly increases [33].…”