Structural, mechanical, and electrical properties of electropolymerized polypyrrole composite films

2001 ◽  
Vol 80 (13) ◽  
pp. 2511-2517 ◽  
Author(s):  
N. V. Bhat ◽  
A. P. Gadre ◽  
V. A. Bambole
Keyword(s):  
Electrical Properties ◽  
Composite Films ◽  
Mechanical And Electrical Properties ◽  
Polypyrrole Composite

ELECTROLYTIC DEPOSITION OF TiC PARTICLES/Ag COMPOSITE FILMS AND THEIR MECHANICAL AND ELECTRICAL PROPERTIES

2018 ◽  
Vol 25 (08) ◽  
pp. 1850121
Author(s):  
LI YUAN ◽  
XUZHENG QIAN ◽  
CHUNYAN ZENG ◽  
CHEN GAO ◽  
YUE LU
Keyword(s):  
Electrical Properties ◽  
Silver Film ◽  
Composite Films ◽  
Electrolytic Deposition ◽  
Indentation Hardness ◽  
Pure Silver ◽  
Plating Bath ◽  
X Ray ◽  
Minor Addition ◽  
Mechanical And Electrical Properties

TiC particles/Ag composite films were successfully prepared through co-electrodeposition, using the Ag plating solutions with minor addition of TiC particles, followed by heat treatment in vacuum. The X-ray diffractometer (XRD), scanning electron microscope (SEM), nanoindentation tester and four-point probes were used to characterize phase composition, morphologies, mechanical properties and electrical properties of as-fabricated films, respectively. Experimental results show that only TiC and Ag phases are identified for the TiC particles/Ag composite films. TiC particles are incorporated tightly and evenly on the surface of the composite films without obvious agglomeration. TiC particles/Ag composite films maintain good electrical conductivity. Meanwhile, compared to pure silver film without the addition of TiC particles, the indentation hardness ([Formula: see text]) of the TiC/Ag composite film electrodeposited from the plating bath containing 6[Formula: see text]g/L of TiC particles can be improved from 600 [Formula: see text] to 11,000 [Formula: see text].

Flexible resistance-type strain sensors toward monitoring finger movements

Synlett ◽  
2021 ◽  
Author(s):  
Chao Lu ◽  
Xi Chen
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Composite Films ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Nanocomposite Films ◽  
Finger Movements ◽  
Resistance Response ◽  
Mechanical And Electrical Properties ◽  
Highly Sensitive

Flexible strain sensors with superior flexibility and high sensitivity are critical to artificial intelligence. And it is favorable to develop highly sensitive strain sensors with simple and cost effective method. Here, we have prepared carbon nanotubes enhanced thermal polyurethane nanocomposites with good mechanical and electrical properties for fabrication of highly sensitive strain sensors. The nanomaterials have been prepared through simple but effective solvent evaporation method, and the cheap polyurethane has been utilized as main raw materials. Only a small quantity of carbon nanotubes with mass content of 5% has been doped into polyurethane matrix with purpose of enhancing mechanical and electrical properties of the nanocomposites. As a result, the flexible nanocomposite films present highly sensitive resistance response under external strain stimulus. The strain sensors based on these flexible composite films deliver excellent sensitivity and conformality under mechanical conditions, and detect finger movements precisely under different bending angles.

Mechanical and electrical properties of calcinated tea-based cellulose composite films

2017 ◽  
Author(s):  
Jayaramudu Tippabattini ◽  
Jung Woong Kim ◽  
Hyun-U Ko ◽  
Abdullahil Kafy ◽  
Yaguang Li ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Composite Films ◽  
Mechanical And Electrical Properties ◽  
Cellulose Composite

scholarly journals Composite Films of Waterborne Polyurethane and Few-Layer Graphene—Enhancing Barrier, Mechanical, and Electrical Properties

2019 ◽  
Vol 3 (2) ◽  
pp. 35
Author(s):  
Eunice Cunha ◽  
Maria Paiva
Keyword(s):  
Electrical Properties ◽  
Aqueous Suspension ◽  
Composite Films ◽  
Spray Coating ◽  
Waterborne Polyurethane ◽  
Free Standing ◽  
Layer Graphene ◽  
Mechanical And Electrical Properties ◽  
Thermal And Electrical Properties ◽  
Few Layer Graphene

Graphene has excellent mechanical, thermal, and electrical properties. Graphene can serve as potential reinforcement in polymer-based nanocomposites. In order to achieve this goal, graphene has to be distributed homogeneously and dispersed throughout the polymer matrix, establishing a strong interface with the polymer. Solution mixing is an interesting method for the preparation of homogeneous nanocomposites, in particular when using environmentally friendly solvents such as water. The major difficulty met in the production of graphene/polymer composites concerns the preparation and stabilization of graphene in aqueous suspension. In the present work three different graphite-based materials, with different crystallinity and purity grades, were exfoliated in aqueous solution of an amphiphilic pyrene derivative, forming few-layer graphene (FLG). The FLG prepared was dispersed in waterborne polyurethane (WPU) to produce composite films. The composite films were produced by solvent casting and spray coating, forming free-standing films that were characterized in terms of its distribution of FLG through the composite, its permeability to water vapor, its electrical resistivity, and its mechanical properties. The studies demonstrated the influence of different factors on the composite film properties such as the use of graphite vs. FLG, the FLG lateral dimensions, and the FLG composition and composite preparation method.

scholarly journals Paper-like graphene-Ag composite films with enhanced mechanical and electrical properties

2013 ◽  
Vol 8 (1) ◽  
pp. 32 ◽  
Author(s):  
Rungang Gao ◽  
Nantao Hu ◽  
Zhi Yang ◽  
Qirong Zhu ◽  
Jing Chai ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Composite Films ◽  
Mechanical And Electrical Properties

Influence of rotational speed on structure, mechanical and electrical properties of TiC/GLC composite films

2019 ◽  
Vol 92 ◽  
pp. 65-73
Author(s):  
Weiqi Wang ◽  
Li Ji ◽  
Hongxuan Li ◽  
Xiaohong Liu ◽  
Huidi Zhou ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Rotational Speed ◽  
Composite Films ◽  
Mechanical And Electrical Properties
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