Epoxy resin/polyetherimide/carbon black conductive polymer composites with a double percolation structure by reaction-induced phase separation

Guo, Chang-Jun; Xi, Dong Yong; Liu, M

doi:10.1177/0021998312446180

Cited by 39 publications

(14 citation statements)

References 49 publications

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“…suggested by Sumita et al [69] is widely and relatively successfully used to forecast distribution [32,49,60]. Wetting coefficient (ω a ) can be calculated according to equation 1:…”

Section: Prediction For Selective Distribution Of Gnpsmentioning

confidence: 99%

“…Another approach is the selective distribution of fillers in an immiscible polymer blend with a co-continuous structure [33,[47][48][49][50][51], a strategy that has also been applied in the design of electrically conductive composites [52][53][54][55]. For example, it has been found that silicon carbide will aggregate in a single polymer phase in an immiscible PS/PVDF blend to form an efficient thermally conductive network [33].…”

Section: Introductionmentioning

confidence: 99%

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Constructing a filler network for thermal conductivity enhancement in epoxy composites via reaction-induced phase separation

Zhang

Shen

Shi

et al. 2018

Composites Part A: Applied Science and Manufacturing

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Diglycidyl ethers of bisphenol-A (DGEBA)/methyl tetrahydrophthalic anhydride/polyethersulphone (PES) blends are prepared as matrix resins for thermally conductive composites using graphite nanoplatelets (GNPs) as the conductive component. The epoxy/PES blends form a network structure via reaction-induced phase separation (RIPS) during the curing process, and the GNPs are selectively localized in the PES phase and at the interface leading to a three-dimensional continuous filler network. With this unique structure, the thermal conductivity of the epoxy/PES/10 wt% GNPs composite is increased to 0.709 W m-1 K-1 , which is nearly 3.5 times that of the pure epoxy or a 52% increase compared to the epoxy/GNP composite without PES. In addition, it is found that the impact strength of the composite relative to the unfilled material is also improved.

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“…suggested by Sumita et al [69] is widely and relatively successfully used to forecast distribution [32,49,60]. Wetting coefficient (ω a ) can be calculated according to equation 1:…”

Section: Prediction For Selective Distribution Of Gnpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Constructing a filler network for thermal conductivity enhancement in epoxy composites via reaction-induced phase separation

Zhang

Shen

Shi

et al. 2018

Composites Part A: Applied Science and Manufacturing

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show abstract

“…Some materials design approaches include the deposition of wire-like nanoconductors onto elastomeric substrates to form conducting grids. 15 Others involve incorporation of nanomaterials such as graphene, 16 carbon black, 17 metal nanowires, 18 or nanoparticles (NPs) 14,19,20 into elastic polymers. The interface between the nanoscale conductive elements and electroactive fluid outside of the electrode changes upon strain for all of these nanocomposites, because the nanoscale objects adjust their mutual orientation (self-assemble) under strain.…”

mentioning

confidence: 99%

Electrochemistry on Stretchable Nanocomposite Electrodes: Dependence on Strain

et al. 2018

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Stretchable nanocomposite conductors are essential for engineering of bio-inspired deformable electronics, human−machine interfaces, and energy storage devices. While the effect of strain on conductivity for stretchable conductors has been thoroughly investigated, the strain dependence of multiple other electrical-transport processes and parameters that determine the functionalities and biocompatibility of deformable electrodes has received virtually no attention. The constancy of electrochemical parameters at electrode−fluid interfaces such as redox potentials, impedances, and charge-transfer rate constants on strain is often tacitly assumed. However, it remains unknown whether these foundational assumptions actually hold true for deformable electrodes. Furthermore, it is also unknown whether the previously used charge-transport circuits describing electrochemical processes on rigid electrodes are applicable to deformable electrodes. Here, we investigate the validity of the strain invariability assumptions for an elastic composite electrode based on gold nanoparticles (AuNPs). A comprehensive model of electrode reactions that accurately describes electrochemical processes taking place on nanocomposite electrodes for ferro-/ferricyanide electrochemicals pair at different strains is developed. Unlike rigid gold electrodes, the model circuit for stretchable electrodes is comprised of two parallel impedance segments describing (a) diffusion and redox processes taking place on the open surface of the composite electrode and (b) redox processes that occur in nanopores. AuNPs forming the open-surface circuit support the redox process, whereas those forming the nanopores only increase the double-layer capacitance. The redox potential was found to be strain-independent for tensile deformations as high as 40%. Other parameters, however, display strong strain dependence, exemplified by the 2−2.5 and 27 times increases of active area of the open and nanopore surface area, respectively, after application of 40% strain. Gaining better understanding of the strain-dependent and-independent electrochemical parameters enables both fundamental and practical advances in technologies based on deformable electrodes.

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“…Adding carbon nanotube, carbon black, graphite, graphene, and so on. into the insulating matrices is one of the conventional methodology [8][9][10][11][12]. Researchers have also studied conductive polymeric layer as an alternative option to provide safety against lightning strikes [13,14].…”

Section: Introductionmentioning

confidence: 99%

Improved environmental stability, electrical and EMI shielding properties of vapor‐grown carbon fiber‐filled polyaniline‐based nanocomposite

Kumar

Muflikhun

Yokozeki

2018

Polymer Engineering & Sci

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An all polymeric electrically conductive thermoset adhesive resin system is prepared for future lightning strike protection applications. Polyaniline (PANI)‐based hybrid nano‐composite is prepared by incorporating high apparent‐density type vapor grown carbon fiber (VGCF‐H) as additional conductive filler. Electrical, mechanical and electromagnetic interference (EMI) shielding properties of PANI‐dodecylbenzene sulfonic acid (DBSA), and divinylbenzene (DVB) system are improved with addition of VGCF‐H. Different weight percentages of VGCF‐H in the PANI‐DBSA/DVB matrix, are studied, and their effect on composite's properties are investigated. Electrical conductivity up to 1.89 S/cm with the addition of 5 wt% VGCF‐H is achieved, which is almost 300% improvement compared with previous system. However, the maximum flexural modulus is obtained at 3 wt% of VGCF‐H. The change in the electronic structure of PANI with the addition of VGCF‐H is investigated using Fourier transform infrared (FT‐IR) analysis. Rheological study and Differential scanning calorimetry analysis were employed to show the effect of VGCF‐H concentration on curing profile of the nanocomposites. EMI shielding properties of the composite with and without VGCF‐H are measured in X‐band frequencies and compared. Composite with 5 wt% VGCF‐H has shown EMI shielding effectiveness about 51 dB in X‐band, which is higher than the composite without VGCF‐H (around 22 dB). POLYM. ENG. SCI., 59:956–963, 2019. © 2018 Society of Plastics Engineers

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Epoxy resin/polyetherimide/carbon black conductive polymer composites with a double percolation structure by reaction-induced phase separation

Cited by 39 publications

References 49 publications

Constructing a filler network for thermal conductivity enhancement in epoxy composites via reaction-induced phase separation

Constructing a filler network for thermal conductivity enhancement in epoxy composites via reaction-induced phase separation

Electrochemistry on Stretchable Nanocomposite Electrodes: Dependence on Strain

Improved environmental stability, electrical and EMI shielding properties of vapor‐grown carbon fiber‐filled polyaniline‐based nanocomposite

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