Highly Stretchable Conductive Electrode Composed of Silver Flake and Ecoflex

2020 ◽  
Vol 12 (4) ◽  
pp. 571-576
Author(s):  
Jin Yeong Park ◽  
Hyun Jin Nam ◽  
Won Jae Lee ◽  
Sung-Hoon Choa
Keyword(s):  
Electrical Conductivity ◽  
Composite Material ◽  
Carbon Black ◽  
Ethylene Oxide ◽  
Electronic Devices ◽  
Silver Flake ◽  
Electromechanical Properties ◽  
Cyclic Stretching ◽  
Stretchable Electrode ◽  
Highly Stretchable

Stretchable electronic devices commonly require interconnectors with high stretchability, conductivity, and durability. In this work, we demonstrated a highly stretchable electrode based on a composite of silver (Ag) flake filler and Ecoflex binder. The stretchable composite material was printed on polyurethane substrate. To improve the dispersibility and printability of the composite material, poly(dimethylsiloxane-ethylene oxide polymeric) was used. The effects of Ag flake content and Ecoflex binder materials on the electromechanical properties of the stretchable electrode were investigated via stretching and cyclic stretching tests. As the amount of Ag flake increased, the electrical conductivity of the electrode increased as well, but the stretchability decreased. Use of Ecoflex 00-10 material, with its softer and lower Young's modulus, greatly improved the stretchability of the electrode—allowing it to stretch to a strain of up to 120%. The stretchable electrode withstood repetitive cyclic stretching durability tests of 10,000 cycles. The addition of carbon black also had a great impact on its electromechanical properties. An electrode fabricated with 0.2 wt% carbon black showed the highest conductivity and excellent stretchability of more than 150%.

Stretchable 5 GHz Dipole Antenna Using Silver Composite Material

2019 ◽  
Vol 11 (12) ◽  
pp. 1719-1722
Author(s):  
InMu Kim ◽  
Ji Hun Yuk ◽  
Sung-Hoon Choa
Keyword(s):  
Composite Material ◽  
Conductive Polymer ◽  
Dipole Antenna ◽  
Polymer Composite Material ◽  
Cyclic Stretching ◽  
Screen Printing Technique ◽  
Mechanical Durability ◽  
Endurance Tests ◽  
Highly Stretchable ◽  
5 Ghz

A highly stretchable small-size 5 GHz dipole antenna is presented for wearable and mobile applications. A stretchable dipole antenna was fabricated using conductive polymer composite material composed of Ag flake filler and polyester binder. The dipole antenna was printed on a stretchable polyurethane substrate using a simple and inexpensive screen-printing technique. The stretchability and durability of the dipole antenna were evaluated by the stretching and cyclic stretching tests. The stretchable dipole antenna showed excellent stretchability and RF performances up to a tensile strain of 25%. The stretchable dipole antenna also exhibited outstanding mechanical durability in the 10,000-cycle cyclic stretching endurance tests.

scholarly journals Влияние содержания технического углерода на фазовый состав и электропроводность полимерного композита

2020 ◽  
Vol 46 (24) ◽  
pp. 27
Author(s):  
А.М. Зюзин ◽  
А.А. Карпеев ◽  
Н.В. Янцен ◽  
В.В. Наумкин
Keyword(s):  
Electrical Conductivity ◽  
Composite Material ◽  
Phase Composition ◽  
High Temperature ◽  
Carbon Black ◽  
Vinyl Acetate ◽  
Relative Proportion ◽  
Ethylene Vinyl Acetate ◽  
Crystal Phase ◽  
Carbon Black Content

We investigated the effect of carbon black on the phase composition in a composite material based on ethylene vinyl acetate. The existence of an additional, and more high-temperature polymer crystal phase, the relative proportion of which is directly related to the carbon black content, was found. It is shown that peroxide saturation significantly affects the polymorphism of the composite and its electrical conductivity.

scholarly journals Effect of graphite sizes and carbon black content on flowability of the injection molded conductive composite material

2018 ◽  
Vol 248 ◽  
pp. 01007
Author(s):  
Yovial Mahyoedin ◽  
Jaafar Sahari ◽  
Andanastuti Mukhtar ◽  
Norhamidi Mohammad ◽  
Suryadimal
Keyword(s):  
Electrical Conductivity ◽  
Composite Material ◽  
Carbon Black ◽  
Cost Effective ◽  
Carbon Black Content ◽  
Conductive Composite ◽  
Melt Compounding ◽  
Twin Screw ◽  
Injection Molded ◽  
Combine Carbon

This study is to investigate the flowability of the injection molded conductive composite material containing filler content from 70 up to 80 wt% by using spiral mold. Several moulding compounds, containing polypropylene (PP) as a matrix and graphite (G) and carbon black (CB) as conductive fillers prepared by melt compounding using twin-screw extruder. Carbon black is added as much as 10% and 20% respectively, in order to improve the electrical conductivity of composite material. Results show that the flowability of injection molded conductive composite material decreases with decreasing graphite size and with increasing filler (graphite and carbon black) content. It was found that composites containing G with particle size distribution (≤100 μm) entirely exhibits a relatively higher flowability, in the range of 10.67–6.21 cm, compared to the small size (25-60 μm), in which flowability is in the range of 5.23–3.37 cm. An attempt to combine carbon black as second filler with the PP and G found that composites containing CB showed decreased flowability of the injection molded conductive composite material, especially when the electrical conductivity formed through the resin. Results indicate that the flowability of the injection molded conductive composite material is an important design parameter to fabricate cost-effective, large, or thin composite bipolar plates.

scholarly journals Thermal, Electrical, and Sensing Properties of Composite Material from Environmental and Industrial Wastage

2020 ◽  
Author(s):  
Sajeel NK ◽  
Karthik Kannan ◽  
Mohammad Houkan ◽  
Mohamed Ismail Saleh ◽  
Kishor Kumar Sadasivuni
Keyword(s):  
Electrical Conductivity ◽  
Composite Material ◽  
Carbon Black ◽  
Matrix Interaction ◽  
Plastic Composite ◽  
Thermal Sensing ◽  
Mixing Method ◽  
Filler Dispersion ◽  
Thermal Stability Of ◽  
Scanning Electron

This work is an endeavour to contemplate a valueadded conductive plastic composite material derived as recycled plastic depending on Polyethylene (PP)/carbon black. We choose to add Carbon black (CB) as a filler material in order to enhance the electrical conductivity as well as other properties associated with the composite. Solution mixing method was adopted to develop this composite where the consequences of CB loadings on various parameters like processability, morphology and thermal stability of the composites were examined. Electrical conductivity increased with the increasing amount of the CB loading. The clearly perceived better filler-matrix interaction and filler dispersion were observed in images obtained from Scanning Electron Microscope (SEM). These are the underlying reason behind the improved electrical, thermal, sensing and dielectric properties of the prepared plastic composite material.

Electrical conductivity and rheological properties of carbon black based conductive polymer composites prior to and after annealing

2021 ◽  
pp. 096739112110012
Author(s):  
Qingsen Gao ◽  
Jingguang Liu ◽  
Xianhu Liu
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Percolation Threshold ◽  
Rheological Properties ◽  
Network Formation ◽  
Loss Modulus ◽  
Conductive Polymer ◽  
Complex Viscosity ◽  
Electrical Percolation ◽  
Electrical Percolation Threshold

The effect of annealing on the electrical and rheological properties of polymer (poly (methyl methacrylate) (PMMA) and polystyrene (PS)) composites filled with carbon black (CB) was investigated. For a composite with CB content near the electrical percolation threshold, the formation of conductive pathways during annealing has a significant impact on electrical conductivity, complex viscosity, storage modulus and loss modulus. For the annealed samples, a reduction in the electrical and rheological percolation threshold was observed. Moreover, a simple model is proposed to explain these behaviors. This finding emphasizes the differences in network formation with respect to electrical or rheological properties as both properties belong to different physical origins.

scholarly journals Stretchable Electronic Devices: Design Criteria for Horseshoe and Spiral‐Based Interconnects for Highly Stretchable Electronic Devices (Adv. Funct. Mater. 7/2021)

2021 ◽  
Vol 31 (7) ◽  
pp. 2170048
Author(s):  
Nadeem Qaiser ◽  
Asrar Nabil Damdam ◽  
Sherjeel Munsif Khan ◽  
Saleh Bunaiyan ◽  
Muhammad Mustafa Hussain
Keyword(s):  
Electronic Devices ◽  
Design Criteria ◽  
Highly Stretchable

Investigate of Electrical Conductivity of Shape-Memory Polymer Filled with Carbon Black

2008 ◽  
Vol 47-50 ◽  
pp. 714-717 ◽  
Author(s):  
Xin Lan ◽  
Jin Song Leng ◽  
Yan Ju Liu ◽  
Shan Yi Du
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Shape Memory ◽  
Shape Recovery ◽  
Volume Fraction ◽  
Shape Memory Polymer ◽  
Recovery Process ◽  
Thermomechanical Properties ◽  
Electrically Conductive ◽  
New System

A new system of thermoset styrene-based shape-memory polymer (SMP) filled with carbon black (CB) is investigated. To realize the electroactive stimuli of SMP, the electrical conductivity of SMP filled with various amounts of CB is characterized. The percolation threshold of electrically conductive SMP filled with CB is about 3% (volume fraction of CB), which is much lower than many other electrically conductive polymers. When applying a voltage of 30V, the shape recovery process of SMP/CB(10 vol%) can be realized in about 100s. In addition, the thermomechanical properties are also characterized by differential scanning calorimetery (DSC).

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