The surface modification of BaTiO3 and its effects on the microstructure and electrical properties of BaTiO3 /silicone rubber composites

2017 ◽  
Vol 24 (3) ◽  
pp. 288-294 ◽  
Author(s):  
Shanshan Guan ◽  
Hai Li ◽  
Shugao Zhao ◽  
Laina Guo
Keyword(s):  
Surface Modification ◽  
Electrical Properties ◽  
Silicone Rubber ◽  
Rubber Composites

scholarly journals Silicone Rubber Composites Reinforced by Carbon Nanofillers and Their Hybrids for Various Applications: A Review

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2322
Author(s):  
Vineet Kumar ◽  
Md Najib Alam ◽  
Amutheesan Manikkavel ◽  
Minseok Song ◽  
Dong-Joo Lee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Electrical Properties ◽  
Silicone Rubber ◽  
Carbon Nanomaterials ◽  
Research Area ◽  
Rubber Matrix ◽  
Strain Sensing ◽  
Rubber Composites ◽  
Wide Range ◽  
Carbon Nanofillers

Without fillers, rubber types such as silicone rubber exhibit poor mechanical, thermal, and electrical properties. Carbon black (CB) is traditionally used as a filler in the rubber matrix to improve its properties, but a high content (nearly 60 per hundred parts of rubber (phr)) is required. However, this high content of CB often alters the viscoelastic properties of the rubber composite. Thus, nowadays, nanofillers such as graphene (GE) and carbon nanotubes (CNTs) are used, which provide significant improvements to the properties of composites at as low as 2–3 phr. Nanofillers are classified as those fillers consisting of at least one dimension below 100 nanometers (nm). In the present review paper, nanofillers based on carbon nanomaterials such as GE, CNT, and CB are explored in terms of how they improve the properties of rubber composites. These nanofillers can significantly improve the properties of silicone rubber (SR) nanocomposites and have been useful for a wide range of applications, such as strain sensing. Therefore, carbon-nanofiller-reinforced SRs are reviewed here, along with advancements in this research area. The microstructures, defect densities, and crystal structures of different carbon nanofillers for SR nanocomposites are characterized, and their processing and dispersion are described. The dispersion of the rubber composites was reported through atomic force microscopy (AFM), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The effect of these nanofillers on the mechanical (compressive modulus, tensile strength, fracture strain, Young’s modulus, glass transition), thermal (thermal conductivity), and electrical properties (electrical conductivity) of SR nanocomposites is also discussed. Finally, the application of the improved SR nanocomposites as strain sensors according to their filler structure and concentration is discussed. This detailed review clearly shows the dependency of SR nanocomposite properties on the characteristics of the carbon nanofillers.

Thermal Properties of the Aluminum Particle Reinforced Silicone Rubber Composites

2011 ◽  
Vol 194-196 ◽  
pp. 1680-1684 ◽  
Author(s):  
Wen Ying Zhou ◽  
Jiang Tao Cai ◽  
An Ning Zhou
Keyword(s):  
Thermal Conductivity ◽  
Thermal Stability ◽  
Surface Modification ◽  
Thermal Properties ◽  
Surface Treatment ◽  
Silicone Rubber ◽  
Aluminum Particle ◽  
Rubber Composites ◽  
Stability Behavior ◽  
Concentration Surface

Micro-sized aluminum (Al) reinforced silicone rubber composites were prepared, and the thermal properties of the composites were investigated in term of composition, shape, and surface modification of Al particles. The results demonstrated that the incorporation of Al particles into the composites improved the peak vulcanization temperature, and decreased the thermal stability behavior of the rubber; furthermore, the shape, concentration, surface treatment of Al particles and temperature had an effect on the thermal conductivity. The thermal conductivity increased obviously with a rise of Al particles concentration, as well as with a surface modification of filler. The flaky Al particles reinforced rubber showed a distinct higher thermal conductivity as compared to the spherical Al particles.

scholarly journals Nonlinear Electrical Properties and Field Dependency of BST and Nano-ZnO-Doped Silicone Rubber Composites

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3153 ◽  
Author(s):  
Juyi Guo ◽  
Xilin Wang ◽  
Zhidong Jia ◽  
Jun Wang ◽  
Chuan Chen
Keyword(s):  
Electrical Properties ◽  
Electric Field ◽  
Silicone Rubber ◽  
Distribution System ◽  
Interfacial Area ◽  
Rubber Composites ◽  
Electrical Field ◽  
Field Dependency ◽  
The Matrix ◽  
Transmission And Distribution

Recently, composite materials with nonlinear dielectric or resistive properties performed well in electric field homogenization and space charge suppression in a high voltage transmission and distribution system. For the purpose of obtaining insulation materials with desirable dielectric and electrical resistance properties, we investigated several fillers with nonlinear electrical properties doped in silicon rubber composites, and their dependency on the temperature and field. The samples of silicone rubber composites with different components were prepared using barium strontium titanate (BST) and zinc oxide (ZnO) as the filler, and high temperature vulcanized silicone rubber (SiR) as the matrix. The investigations revealed that the BST-doped samples showed different dielectric properties compared to ZnO-doped composites, with an increase in the electric field, which was nonlinear. The resistivity of both doped samples was similar. Results demonstrated that it was possible to achieve higher values of permittivity, and lower values of tanδ and resistivity, with respect to unfilled silicone rubber composites over a wide electrical field and temperature range. Discussion of the results attributes these important functional behaviours to the spontaneous polarization of nonlinear nanoparticles and the interaction between the SiR chains and the nonlinear nanoparticles at the interfacial area.

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