The improved thermal oxidative stability of silicone rubber by incorporating reduced graphene oxide: Impact factors and action mechanism

2016 ◽  
Vol 39 (4) ◽  
pp. 1105-1115 ◽  
Author(s):  
Xingna Qiu ◽  
Hai Cai ◽  
Xin Fang ◽  
Junping Zheng
Keyword(s):  
Graphene Oxide ◽  
Oxidative Stability ◽  
Reduced Graphene Oxide ◽  
Silicone Rubber ◽  
Impact Factors ◽  
Action Mechanism ◽  
Thermal Oxidative Stability ◽  
Reduced Graphene

scholarly journals Reduced Graphene Oxide Embedded with MQ Silicone Resin Nano-Aggregates for Silicone Rubber Composites with Enhanced Thermal Conductivity and Mechanical Performance

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1254 ◽  
Author(s):  
Weijie Liang ◽  
Xin Ge ◽  
Jianfang Ge ◽  
Tiehu Li ◽  
Tingkai Zhao ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Silicone Rubber ◽  
Heat Dissipation ◽  
Mechanical Performance ◽  
Thermal Interface Material ◽  
Silicone Resin ◽  
Blending Method ◽  
Reduced Graphene

With developments of the electronics industry, more components are being included in electronic devices, which has led to challenges in thermal management. Using reduced graphene oxide embedded with MQ silicone resin (RGO/MQ) nano-aggregates as the composite filler and silicone rubber (SR) as the matrix, a simple approach is designed to prepare RGO/MQ/SR composites. Reduced graphene oxide (RGO) was first used as a substrate for the growth of MQ silicone resin by hybridization, forming sandwich-like micro structured RGO/MQ nano-aggregates successfully. Then, RGO/MQ was integrated into α,ω-dihydroxylpolydimethylsiloxane based on the in situ solvent-free blending method, followed by condensation and vulcanization, fabricating the final RGO/MQ/SR composites. The effective strategy could enhance the adaptability between graphene and silicone matrix under external stimuli at room temperature by embedding nanoscale MQ into the interface of graphene/silicone as the buffer layer. Obvious improvements were found in both thermal conductivity and mechanical properties due to excellent dispersion and interfacial compatibility of RGO/MQ in the host materials. These attractive results suggest that this RGO/MQ/SR composite has potential as a thermal interface material for heat dissipation applications.

scholarly journals A reduced graphene oxide–borate compound-loaded melamine sponge/silicone rubber composite with ultra-high dielectric constant

RSC Advances ◽  
2019 ◽  
Vol 9 (25) ◽  
pp. 14276-14285
Author(s):  
Hong Zhang ◽  
Chuan-Guo Ma ◽  
Pei-Bang Dai ◽  
Jian Zhang
Keyword(s):  
Dielectric Constant ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Silicone Rubber ◽  
High Dielectric Constant ◽  
Reduced Graphene ◽  
Rubber Composite ◽  
High Dielectric ◽  
Borate Compound

A reduced graphene oxide–borate compound-loaded melamine sponge/silicone rubber composite with the ultra-high dielectric constant of 2.71 × 104.

A study on the influence of reduced graphene oxide on the mechanical, dynamic mechanical and tribological properties of silicone rubber nanocomposites

2020 ◽  
pp. 002199832098160
Author(s):  
PS Sarath ◽  
Grace Moni ◽  
Jinu Jacob George ◽  
Józef T Haponiuk ◽  
Sabu Thomas ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Wear Rate ◽  
Reduced Graphene Oxide ◽  
Silicone Rubber ◽  
Photoelectron Spectroscopy ◽  
Applied Load ◽  
Adhesive Film ◽  
X Ray ◽  
Reduced Graphene

Graphene oxide (GO) was synthesized by modified Hummer’s method and it reduced with hydrazine. Synthesized reduced graphene oxide (rGO) was characterized by FT-IR spectroscopy, X-ray diffraction spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. An elastomeric nanocomposite was prepared by incorporating rGO in silicone rubber using two roll mill mixing method.Tribological study was conducted at a wear surface of hardened ground steel against different applied load, sliding speed and temperature using a pin on disk setup. Addition of rGO results in an improvement of mechanical, tribological and thermal properties of silicone rubber. The coefficient friction (COF) and specific wear rate of the nanocomposite decreased with rGO concentration, applied load, and temperature. Morphological analysis of SRrGO nanocomposites was deeply investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM). Worn surface analysis confirms that rGO forms a lubricant film on the counter surface but it fails to form a strong adhesive film on the metal surface. The depth wear rate decreased by the incorporation of rGO in the Silicone rubber (SR) matrix.

Flexible reduced graphene oxide@Fe3O4/silicone rubber composites for enhanced microwave absorption

2021 ◽  
pp. 151270
Author(s):  
Jiana Hu ◽  
Caiyun Liang ◽  
Jiadong Li ◽  
Yongjiu Liang ◽  
Shangyu Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Microwave Absorption ◽  
Silicone Rubber ◽  
Rubber Composites ◽  
Reduced Graphene

scholarly journals Electric Field Grading Material Based on Thermally Reduced Graphene Oxide

2017 ◽  
Author(s):  
W. Li ◽  
U. W Gedde ◽  
H. Hillborg
Keyword(s):  
Graphene Oxide ◽  
Electric Field ◽  
Reduced Graphene Oxide ◽  
Electric Fields ◽  
Silicone Rubber ◽  
Rubber Matrix ◽  
Reduced Graphene ◽  
Rubber Composite ◽  
Non Linear ◽  
A Minor

<p>Silicone rubber filled with low amounts of thermally<br />reduced graphene oxide exhibit non-linear conductivity<br />with exposed to increased electric fields. Such material<br />can be interesting as electric field grading material in<br />HVDC cable accessories. In this study graphene oxide<br />was thermally reduced (rGO) at 120 and 180 °C during<br />12 hours in a hot air oven. The reduction was confirmed<br />by TGA and FTIR. 3 wt.% rGO was then dispersed in a<br />silicone rubber matrix and homogenous dispersion was<br />demonstrated by the scanning electron microscopy. The<br />rGO-filled silicone rubber (120 and 180 °C reduced)<br />exhibited a non-linear resistivity when exposed to an<br />increasing electric (DC) field. The conductivity<br />decreased from 10^14 to 10^11 Ohm m when the electric<br />field increasing from 0.2 to 6 kV/mm. The onset of the<br />non-linear conduction occurred in the range of 1 – 2<br />kV/mm. The long-term stability of the conductivity of<br />the silicone rubber composite was tested. After 47 days<br />ageing at 120 °C, therGO/silicone rubber composite<br />exhibited a slight increase in the onset of non-linear<br />conduction, as well as a minor increase in resistivity.</p>

The synergistic mechanism of thermally reduced graphene oxide and antioxidant in improving the thermo-oxidative stability of polypropylene

Carbon ◽  
2015 ◽  
Vol 89 ◽  
pp. 340-349 ◽  
Author(s):  
Junlong Yang ◽  
Yajiang Huang ◽  
Yadong Lv ◽  
Songrong Li ◽  
Qi Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxidative Stability ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Synergistic Mechanism
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