Electrically Conductive Fibers/Yarns with Sensing Behavior from PVA and Carbon Black

2011 ◽  
Vol 462-463 ◽  
pp. 18-23 ◽  
Author(s):  
P. Xue ◽  
Xiao Ming Tao ◽  
Keun Hoo Park
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Morphological Characteristics ◽  
Processing Technique ◽  
Wet Spinning ◽  
Coating Process ◽  
Textile Processing ◽  
Electrically Conductive ◽  
Conductive Yarns ◽  
Conductive Fibers

In this study, electrical conductive yarns were prepared by wet-spinning technique and a physically coating process. Carbon black (CB) was used to make the fiber gaining electrical conductivity. The electrical conductivity and morphological characteristics of the developed conductive fibres were studied and compared. The results show that linear resistivity of the produced conductive yarns ranges from 1 to a few hundred kΩ per centimeter, mainly depending on processing technique and substrate fibers. It is also shown that the physically coating processes will not significantly affect the mechanical properties of the fibers and yarns. These conductive yarns are lightweight, durable, flexible, and cost competitive; and able to be crimped and subjected to textile processing without any difficulty.

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).

Electrically Conductive Monofilaments for Smart Textiles

2008 ◽  
Vol 60 ◽  
pp. 58-63 ◽  
Author(s):  
Laura Jiménez ◽  
A.M. Rocha ◽  
I. Aranberri ◽  
José A. Covas ◽  
A.P. Catarino
Keyword(s):  
Carbon Black ◽  
Carbon Fibers ◽  
Conductive Polymer ◽  
Textile Yarn ◽  
Electrically Conductive ◽  
Flow Channels ◽  
Conductive Yarns ◽  
Electrical Wiring ◽  
Processing Techniques ◽  
Fiber Processing

The main objective of this work is to develop conductive yarns to be used as electrical wiring in e-textiles with the typical mechanical properties of a textile yarn. Present work deals with the study of conductive polymer composites filaments of PP (polypropylene) with CB (carbon black), carbon black of high conductivity (CBHC) and CF (carbon fibers) .The novelty of this work resides in creating oriented filaments using traditional fiber processing techniques together with a specially designed drafting machine. In the authors’ opinion, the composite conductivity could be improved with the orientation of the (nano)carbon-based fillers by melt drawing after extrusion in order to facilitate the flow channels creation.

scholarly journals Selective Localization of Carbon Black in Bio-Based Poly (Lactic Acid)/Recycled High-Density Polyethylene Co-Continuous Blends to Design Electrical Conductive Composites with a Low Percolation Threshold

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1583 ◽  
Author(s):  
Xiang Lu ◽  
Benhao Kang ◽  
Shengyu Shi
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Electrical Conductivity ◽  
Lactic Acid ◽  
Carbon Black ◽  
Percolation Threshold ◽  
High Density Polyethylene ◽  
Poly Lactic Acid ◽  
Electrically Conductive ◽  
Selective Localization

The electrically conductive poly (lactic acid) (PLA)/recycled high-density polyethylene (HDPE)/carbon black (CB) composites with a fine co-continuous micro structure and selective localization of CB in the HDPE component were fabricated by one-step melt processing via a twin-screw extruder. Micromorphology analysis, electrical conductivity, thermal properties, thermal stability, and mechanical properties were investigated. Scanning electron microscope (SEM) images indicate that a co-continuous morphology is formed, and CB is selectively distributed in the HDPE component. With the introduction of CB, the phase size of the PLA component and the HDPE component in PLA/HDPE blends is reduced. In addition, differential scanning calorimetry (DSC) and thermos gravimetric analysis (TGA) results show that the introduction of CB promotes the crystallization behavior of the PLA and HDPE components, respectively, and improves the thermal stability of PLA70/30HDPE/CB composites. The electrically conductive percolation threshold of the PLA70/30HDPE/CB composites is around 5.0 wt %, and the electrical conductivity of PLA70/30HDPE/CB composites reaches 1.0 s/cm and 15 s/cm just at the 10 wt % and 15 wt % CB loading, respectively. Further, the tensile and impact tests show that the PLA70/30HDPE/CB composites have good mechanical properties. The excellent electrical conductivity and good mechanical properties offer the potential to broaden the application of PLA/HDPE/CB composites.

Study on Alkyd-Based Electrically Conductive Coatings

2007 ◽  
Vol 280-283 ◽  
pp. 869-872
Author(s):  
Zhi Ming Du ◽  
Xiao Min Cong ◽  
Peng Wang
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Alkyd Resin ◽  
Electrically Conductive ◽  
Conductive Coatings ◽  
Electrically Conductive Coatings

Carbonaceous fillers have been widely applied in electrically conductive coatings due to their cheaper, steady electrically conductive capability and other excellent performances. Electrically conductive coatings were synthesized by using graphite and carbon black as fillers in the alkyd resin matrices. Influences of various fillers on electrical conductivity of coatings have been investigated in detail.

scholarly journals Electrophysical Properties of Epoxy Composite Materials Filled with Carbon Black Nanopowder

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Andriy Buketov ◽  
Serhii Smetankin ◽  
Eduard Lysenkov ◽  
Kyrylo Yurenin ◽  
Oleksandr Akimov ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Dielectric Constant ◽  
Carbon Black ◽  
Percolation Threshold ◽  
Structural Features ◽  
Electrically Conductive ◽  
Percolation Behavior ◽  
The Matrix ◽  
Electrical And Dielectric Properties ◽  
Nanofiller Content

The effect of carbon black (CB) nanopowder on the electrical properties of polymer composite systems based on the epoxy resin is investigated using the method of impedance spectroscopy. It is established that the electrical and dielectric properties of the studied systems significantly depend on the nanofiller content. It is found that electrical conductivity and dielectric constant exhibit percolation behavior when the filler’s content increases. In this case, the electrical conductivity increases exponentially, indicating the formation of filler electrically conductive mesh inside the polymer matrix. A small jump in electrical conductivity when reaching the percolation threshold indicates the formation of indirect contacts between the particles. The value of the percolation threshold of conductivity is 8%. It is shown that the dielectric constant of epoxy nanosystems is almost unchanged in the frequency range of 102–105 Hz. It is related to the structural features of the filler particles, which ensure the existence of a minimal dielectric gradient between the matrix and the filler. It is found that the dielectric constant of the studied systems also shows percolation behavior. The obtained material based on the epoxy matrix is characterized by a high value of dielectric constant, which at a carbon black nanopowder content of 29% is 4680. This material is characterized by relative frequency invariance and a high value of dielectric constant, so it has great potential for practical application.

Electrically Conductive PEDOT-PSS/PAN Composite Fibers Prepared by Wet Spinning

2012 ◽  
Vol 627 ◽  
pp. 885-891 ◽  
Author(s):  
Yin Liu ◽  
Xin Li ◽  
Jing Chun Lü
Keyword(s):  
Thermal Stability ◽  
Sulfonic Acid ◽  
Breaking Strength ◽  
Wet Spinning ◽  
Composite Fibers ◽  
Electrically Conductive ◽  
Spinning Process ◽  
Polystyrene Sulfonic Acid ◽  
Conductive Fibers ◽  
Thermal Stability Of

The composite conductive fibers based on poly (3,4-ethylenedioxythiophene)-polystyrene sulfonic acid (PEDOT-PSS) blended with polyacrylonitrile (PAN) were prepared via a conventional wet spinning process. The influences of PEDOT-PSS content on the electrical conductivity, thermal stability and mechanical properties of the composite fibers were investigated. The fiber with 1.83 wt% PEDOT-PSS showed a conductivity of 5.0 S/cm. The breaking strength of the fibers was in the range of 0.36-0.60 cN/dtex. The thermal stability of the PEDOT-PSS/PAN composite fibers was similar to but a slightly lower than the pure PAN. The XRD results revealed that both pure PAN and the PEDOT-PSS/PAN composite fibers were amorphous phase, and the crystallization of the latter was lower than the former.

Development of Electrically Conductive Polymers

2012 ◽  
Vol 729 ◽  
pp. 397-402
Author(s):  
Anett Király ◽  
Ferenc Ronkay
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Modulus Of Elasticity ◽  
Conductive Polymers ◽  
Flexural Modulus ◽  
Electrically Conductive ◽  
Graphite Content ◽  
Conducting Composites

Conducting composites based on graphite, carbon black and polypropylene have been prepared and the effect of composition on the flexural modulus and electrical conductivity has been studied. The conductivity of polymers containing only one kind of filler did not increase significantly, their modulus of elasticity was the highest for graphite filling, and the lowest for nanotube filling. The conductivity of dual filler hybrids increased significantly due to the synergetic interaction between the two fillers. At lower graphite contents, because of the better dispersion of graphite, the material became more flexible, but at higher carbon black contents the stiffness increased significantly. In the case of triple filler hybrids, if keeping the graphite content at a certain level and varying only the carbon black/nanotube ratio, the conductivity and the flexural modulus varied according to exponential and linear rules respectively.

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