Electrical Properties of Graphene Filled Natural Rubber Composites

2013 ◽  
Vol 812 ◽  
pp. 263-266 ◽  
Author(s):  
Yaragalla Srinivasarao ◽  
Yahaya Subban Ri Hanum ◽  
Chin Han Chan ◽  
Kalarikkal Nandakumar ◽  
Thomas Sabu
Keyword(s):  
Dielectric Constant ◽  
Graphene Oxide ◽  
Natural Rubber ◽  
Conductivity Data ◽  
Rubber Composites ◽  
Melt Mixing ◽  
Electrical Percolation ◽  
Natural Rubber Composites ◽  
Reduced Graphene ◽  
Mixing Method

Thermally reduced graphene oxide (graphene) filled natural rubber (NR) composites were fabricated by melt mixing method. Dielectric constant, dielectric loss and a.c conductivity data of the NR composites are reported. Highest conductivity of 3 x 10-4 S/m was obtained for the composite with 3 wt. % graphene with initial electrical percolation at a loading of 0.5 wt. %. High conductivity in the composite with 3 wt. % graphene is accounted by its homogeneity as observed in SEM micrographs.

The role of reduced graphene oxide on chemical, mechanical and barrier properties of natural rubber composites

2014 ◽  
Vol 102 ◽  
pp. 74-81 ◽  
Author(s):  
Ning Yan ◽  
Giovanna Buonocore ◽  
Marino Lavorgna ◽  
Saulius Kaciulis ◽  
Santosh Kiran Balijepalli ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Natural Rubber ◽  
Reduced Graphene Oxide ◽  
Barrier Properties ◽  
Rubber Composites ◽  
Natural Rubber Composites ◽  
Reduced Graphene

scholarly journals Multi-layer graphene oxide synergistically modified by two coupling agents and its application in reinforced natural rubber composites

RSC Advances ◽  
2018 ◽  
Vol 8 (52) ◽  
pp. 29847-29854 ◽  
Author(s):  
Meng Jiang ◽  
Yuzhu Xiong ◽  
Bai Xue ◽  
Qingpo Zhang ◽  
Qian Wan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Natural Rubber ◽  
Coupling Agents ◽  
Rubber Composites ◽  
Layer Graphene ◽  
Natural Rubber Composites

Multi-layer graphene oxide synergistically modified by two coupling agents can effectively reinforce natural rubber composites.

Preparation, fracture, and fatigue of exfoliated graphene oxide/natural rubber composites

RSC Advances ◽  
2015 ◽  
Vol 5 (22) ◽  
pp. 17140-17148 ◽  
Author(s):  
Bin Dong ◽  
Chang Liu ◽  
Liqun Zhang ◽  
Youping Wu
Keyword(s):  
Graphene Oxide ◽  
Natural Rubber ◽  
Fatigue Resistance ◽  
Rubber Composites ◽  
Exfoliated Graphene ◽  
Natural Rubber Composites

The fracture and fatigue resistance of graphene oxide reinforced natural rubber composites which were prepared by latex co-coagulation was investigated.

scholarly journals Influence of Preparation Method on Properties of Natural Rubber/Sepiolite Composites

2021 ◽  
Vol 2129 (1) ◽  
pp. 012075
Author(s):  
Patiwarada Jitsopin ◽  
Abdulhakim Masa ◽  
Nabil Hayeemasae ◽  
Mohamad Syahmie Mohamad Rasidi
Keyword(s):  
Tensile Strength ◽  
Stress Relaxation ◽  
Natural Rubber ◽  
Tensile Properties ◽  
Preparation Method ◽  
Rubber Composites ◽  
Melt Mixing ◽  
Elongation At Break ◽  
Mixing Method

Abstract Natural rubber (NR) composites filled with various sepiolite loadings were prepared and optimized by two different mixing methods, namely, melt mixing and latex mixing methods. The properties were evaluated through viscosity, stress relaxation, curing behaviors and tensile properties of rubber composites. The viscosity was influenced by sepiolite content and mixing methods. The greater interaction between rubber and sepiolite was obtained from melt mixing method. This reflected to the greater tensile strength found in this method. Considering the content of sepiolite, similar trend was observed for the curing properties and elongation at break. The greatest tensile strength was observed when the sepiloite content was at 1 phr.

scholarly journals Enhanced Fatigue and Durability Properties of Natural Rubber Composites Reinforced with Carbon Nanotubes and Graphene Oxide

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5746
Author(s):  
Hao Guo ◽  
Peizhi Ji ◽  
István Zoltán Halász ◽  
Dávid Zoltán Pirityi ◽  
Tamás Bárány ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Natural Rubber ◽  
Fatigue Properties ◽  
Rubber Composites ◽  
Durability Properties ◽  
Natural Rubber Composites ◽  
Fibrous Carbon ◽  
Filler Network ◽  
Crack Growth Rates

Fibrous carbon nanotubes (CNTs) and lamellar graphene oxide (GO) exhibit significant advantages for improving the fatigue properties of rubber composites. In this work, the synergistic effect of CNTs and GO on the modification of the microstructure and fatigue properties of natural rubber (NR) was comprehensively investigated. Results showed that CNTs and GO were interspersed, and they formed a strong filler network in the NR matrix. Compared with those of CNT/NR and GO/NR composites, the CNT-GO/NR composites showed the smallest crack precursor sizes, the lowest crack growth rates, more branching and deflections, and the longest fatigue life.

Natural rubber composites containing low and high dielectric constant fillers and their application as substrates for compact flexible antennas

2020 ◽  
pp. 096739112091087
Author(s):  
Abdullah G Al-Sehemi ◽  
Ahmed A Al-Ghamdi ◽  
Nikolay T Dishovsky ◽  
P Malinova ◽  
Nikolay T Atanasov ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Natural Rubber ◽  
High Dielectric Constant ◽  
Antibacterial Effect ◽  
Area Network ◽  
Rubber Composites ◽  
Natural Rubber Composites ◽  
Flexible Antennas ◽  
High Dielectric ◽  
Functional Fillers

The vulcanization properties, physicochemical, dielectric, and electrical properties of natural rubber-based composites were investigated and compared. The composites contain 30–70 phr functional fillers having low (silicon dioxide (SiO2)) and high (titanium dioxide (TiO2)) dielectric constant values. The possibilities of using the composites as substrates in compact flexible antennas have been evaluated. Fillers are also characterized. It has been shown that they have a noticeable but different influence on all the properties of the composites studied. That is primarily due to the different structure and specific properties of SiO2 and TiO2, thereby determining the different “filler–filler” and “rubber–filler” interactions. The composite filled with TiO2 at 70 phr has a better capacity to act as a substrate in body area network antennas than the SiO2-filled composites. An antenna with such a substrate has features that meet all the requirements of the industrial, science, and medical spectrum. TiO2 composites do not change their resistance to pressure or deflection within certain limits, having a self-cleaning and antibacterial effect, which is also beneficial for their usage in antennas that are left on or near the human body.

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