Graphene platelets/aluminium nitride metacomposites with double percolation property of thermal and electrical conductivity

In the present study, an elastomeric nanocomposite was prepared by two roller mixing mill with the Natural Rubber (NR) and Nano Graphene Platelets (NGP). The Nylon 6.6 cord fabrics were laminated with the prepared NR/NGP nanocomposite layers. The NR/NGP composites and Nylon 6.6 cord fabric laminated nanocomposite plates were cured at 165 °C for 10 min under pressure. Nylon 6.6 fabric reinforced NR/NGP nanocomposites were electrically characterized under free and cyclic loading conditions. NGP addition to NR improved the electrical conductivity. Under cyclic loading produced nanocomposite and cord fabric layered plates showed periodical sensing behavior with same amplitude in each period.

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Effect of polyamide 6 on the morphology and electrical conductivity of carbon black-filled polypropylene composites

Royal Society Open Science ◽

10.1098/rsos.170769 ◽

2017 ◽

Vol 4 (12) ◽

pp. 170769 ◽

Cited By ~ 7

Author(s):

Xuewei Zhang ◽

Jiang Liu ◽

Yi Wang ◽

Wei Wu

Keyword(s):

Electrical Conductivity ◽

Carbon Black ◽

Plastic Material ◽

Conductive Polymer ◽

Polyamide 6 ◽

Surface Resistivity ◽

Electric Industry ◽

Polypropylene Composites ◽

Electrical Percolation ◽

Double Percolation

Carbon black (CB)-filled polypropylene (PP) with surface resistivity between 10 6 and 10 9 Ω sq −1 is the ideal antistatic plastic material in the electronics and electric industry. However, a large amount of CB may have an adverse effect on the mechanical properties and processing performance of the material, thus an improved ternary system is developed. Blends of CB-filled PP and polyamide 6 (PA6) have been prepared by melt blending in order to obtain electrically conductive polymer composites with a low electrical percolation threshold based on the concept of double percolation. The morphological developments of these composites were studied by scanning electron microscopy. The results showed that CB particles were selectively dispersed in PA6 phases due to the good interaction and interfacial adhesion between CB and PA6. At the same CB loadings, the surface resistivity of PP/PA6/CB composite was smaller than that of PP/CB composite system, which indicated the better conductivity in the former composite. The increasing amount of PA6 in the composites changed the morphology from a typical sea–island morphology to a co-continuous morphology. What is more, with 8 wt% of CB and PP/PA6 phase ratio of 70/30 in which the PP and PA6 phases formed a co-continuous structure, the electrical conductivity of the composite peaked at 2.01 × 10 5 Ω sq −1 .

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Anisotropy and enhancement of thermoelectric performance of Sr0.8La0.067Ti0.8Nb0.2O3−δ ceramics by graphene additions

Journal of Materials Chemistry A ◽

10.1039/c9ta02883h ◽

2019 ◽

Vol 7 (42) ◽

pp. 24602-24613 ◽

Cited By ~ 5

Author(s):

D. Srivastava ◽

C. Norman ◽

F. Azough ◽

D. Ekren ◽

K. Chen ◽

...

Keyword(s):

Thermal Conductivity ◽

Electrical Conductivity ◽

Ceramic Composites ◽

Thermoelectric Performance ◽

Graphene Platelets

Orientation of graphene platelets in SrTiO3 ceramic composites leads to significant anisotropy in electrical conductivity and thermal conductivity.

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High-temperature electrical conductivity of aluminium nitride

Journal of Materials Science ◽

10.1007/bf01161209 ◽

1987 ◽

Vol 22 (9) ◽

pp. 3385-3390 ◽

Cited By ~ 10

Author(s):

V. L. Richards ◽

T. Y. Tien ◽

R. D. Pehlke

Keyword(s):

Electrical Conductivity ◽

High Temperature ◽

Aluminium Nitride

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Construction and Mechanism Analysis of a Self-Assembled Conductive Network in DGEBA/PEI/HRGO Nanocomposites by Controlling Filler Selective Localization

Nanomaterials ◽

10.3390/nano11010228 ◽

2021 ◽

Vol 11 (1) ◽

pp. 228

Author(s):

Yiming Meng ◽

Sushant Sharma ◽

Wenjun Gan ◽

Seung Hyun Hur ◽

Won Mook Choi ◽

...

Keyword(s):

Electrical Conductivity ◽

Polymer Blend ◽

Chemical Reduction ◽

Dynamic Mechanical Properties ◽

Diglycidyl Ether ◽

Mechanism Analysis ◽

Dynamic Mechanical ◽

Curing Reaction ◽

Selective Localization ◽

Double Percolation

Herein, a feasible and effective approach is developed to build an electrically conductive and double percolation network-like structure via the incorporation of highly reduced graphene oxide (HRGO) into a polymer blend of diglycidyl ether of bisphenol A/polyetherimide (DGEBA/PEI). With the assistance of the curing reaction-induced phase separation (CRIPS) technique, an interconnected network of HRGO is formed in the phase-separated structure of the DGEBA/PEI polymer blend due to selective localization behavior. In this study, HRGO was prepared from a unique chemical reduction technique. The DGEBA/PEI/HRGO nanocomposite was analyzed in terms of phase structure by content of PEI and low weight fractions of HRGO (0.5 wt.%). The HRGO delivered a high electrical conductivity in DGEBA/PEI polyblends, wherein the value increased from 5.03 × 10−16 S/m to 5.88 S/m at a low content of HRGO (0.5 wt.%). Furthermore, the HRGO accelerated the curing reaction process of CRIPS due to its amino group. Finally, dynamic mechanical analyses (DMA) were performed to understand the CRIPS phenomenon and selective localization of HRGO reinforcement. The storage modulus increased monotonically from 1536 MPa to 1660 MPa for the 25 phr (parts per hundred in the DGEBA) PEI polyblend and reached 1915 MPa with 0.5 wt.% HRGO reinforcement. These simultaneous improvements in electrical conductivity and dynamic mechanical properties clearly demonstrate the potential of this conductive polyblend for various engineering applications.

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Bridged double percolation in conductive polymer composites: an electrical conductivity, morphology and mechanical property study

Polymer ◽

10.1016/s0032-3861(02)00180-5 ◽

2002 ◽

Vol 43 (13) ◽

pp. 3717-3725 ◽

Cited By ~ 148

Author(s):

Wiriya Thongruang ◽

Richard J. Spontak ◽

C.Maurice Balik

Keyword(s):

Mechanical Property ◽

Electrical Conductivity ◽

Polymer Composites ◽

Conductive Polymer ◽

Conductive Polymer Composites ◽

Double Percolation

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Processable 3-nm thick graphene platelets of high electrical conductivity and their epoxy composites

Nanotechnology ◽

10.1088/0957-4484/25/12/125707 ◽

2014 ◽

Vol 25 (12) ◽

pp. 125707 ◽

Cited By ~ 70

Author(s):

Qingshi Meng ◽

Jian Jin ◽

Ruoyu Wang ◽

Hsu-Chiang Kuan ◽

Jun Ma ◽

...

Keyword(s):

Electrical Conductivity ◽

Epoxy Composites ◽

High Electrical Conductivity ◽

Graphene Platelets

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Structure and Electrical Conductivity of Polystyrene/Carbon Black Composites Prepared by Microlayer Coextrusion

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.717.38 ◽

2016 ◽

Vol 717 ◽

pp. 38-46 ◽

Cited By ~ 1

Author(s):

Chang Jin Li ◽

Liang Zhao Xiong ◽

Cong Ji Yuan ◽

Zhi Wei Jiao ◽

Wei Min Yang

Keyword(s):

Mechanical Properties ◽

Electrical Conductivity ◽

Electrical Resistivity ◽

Carbon Black ◽

Percolation Threshold ◽

Layered Structure ◽

Electrically Conducting ◽

Percolation Effect ◽

Multilayered Composites ◽

Double Percolation

Electrically conducting composites with a structure of alternating (A-B-A)n layers were prepared by a novel microlayer coextrusion, which were consisted of alternating layers of polystyrene (PS) and layers of carbon black (CB)-filled polystyrene (PSCB). The co-continuous structure with selective location of CB in PSCB layers was controllable by changing the number of multiplying elements, and decreased the percolation threshold and electrical resistivity of multilayered composites because of the double percolation effect. In addition, the multilayered composites exhibited better mechanical properties than that of the conventional blends, which were related to the layered structure and small size of CB aggregates.

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