Preparation and thermo-mechanical properties of functionalized graphene/silicone rubber nanocomposites

Zong, Yangyang; Gui, Dayong; Li, Shibin; Tan, Guiming; Xiong, Wentao; Liu, Jianhong

doi:10.1109/icept.2015.7236538

Cited by 13 publications

(7 citation statements)

References 16 publications

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“…In contrast to other previous work, the results of thermal conductivity show greater improvement, shown in Figure 7. Our work shows thermal conductivity of RGO/MQ/SR composites with a lower graphene content are competitive with those of other graphene/silicone rubber composites previously reported in the literature [17,19,35,36,37,38,39,40,41]. The improved thermal conductivity demonstrates that sandwich-like micro structured RGO/MQ can motivate the dispersion of RGO in the matrix which fully utilizes the thermal conductance of graphene.…”

Section: Resultssupporting

confidence: 58%

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

Liang

et al. 2018

Polymers

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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.

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Section: Resultssupporting

confidence: 58%

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

Liang

et al. 2018

Polymers

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“…Despite several advantages, the vulcanized neat silicone rubbers usually have poor mechanical properties and low thermal/electrical conductivity restricting its use in many industrial applications. Therefore, silicon rubber filled with carbon based nanofillers have been reported [ 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 , 123 , 124 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 136 , 137 , 138 , 139 , 140 , 141 , 142 , 143 , 197 , 198 , 199 , 200 ]. Room temperature vulcanized (RTV) vulcanizates on adding 2 phr of CNTs increased the Young’s modulus by 272% and reached as high as ~706% at 8 phr [ 116 ].…”

Section: Mechanical Properties Of Rubber Nanocomposites Of Carbon mentioning

confidence: 99%

“…Similarly, elongation at break was also enhanced in 0.5 wt % FG filled RTV by 67% higher when compared to neat RTVSR. Zong and coworkers [ 133 ] prepared functionalized graphene (FG) by a reduction of graphite oxide by hydrazine hydrate and subsequently used in development of silicone rubber nanocomposites. These silicone rubber nanocomposites exhibited significant improvements in tensile strength (198.3%) and elongation at break (268.2%) as compared to neat silicone rubber.…”

Section: Mechanical Properties Of Rubber Nanocomposites Of Carbon mentioning

confidence: 99%

Nanocarbon Reinforced Rubber Nanocomposites: Detailed Insights about Mechanical, Dynamical Mechanical Properties, Payne, and Mullin Effects

Srivastava

Mishra

2018

Nanomaterials

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The reinforcing ability of the fillers results in significant improvements in properties of polymer matrix at extremely low filler loadings as compared to conventional fillers. In view of this, the present review article describes the different methods used in preparation of different rubber nanocomposites reinforced with nanodimensional individual carbonaceous fillers, such as graphene, expanded graphite, single walled carbon nanotubes, multiwalled carbon nanotubes and graphite oxide, graphene oxide, and hybrid fillers consisting combination of individual fillers. This is followed by review of mechanical properties (tensile strength, elongation at break, Young modulus, and fracture toughness) and dynamic mechanical properties (glass transition temperature, crystallization temperature, melting point) of these rubber nanocomposites. Finally, Payne and Mullin effects have also been reviewed in rubber filled with different carbon based nanofillers.

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“…However, this kind of modification mainly limits bacterial or fungal colonization and has little impact on the mechanical properties. On the other hand, mechanical properties can be influenced by incorporating graphene and carbon nanotubes [ 10 , 11 ], silver-zirconium phosphate and titanium oxide [ 12 , 13 ], titanium dioxide [ 14 ], zinc oxide [ 15 ], PMMA [ 16 ], or bioglasses [ 17 , 18 ], some of which improve the antimicrobial properties and biointegration of implants as well. Another way to reduce the adhesion of bacteria to the material is to modify the surface by interacting with chemical compounds, plasma or nanopattering, which allows for obtaining a specific surface topography [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Herbal Fillers Addition on Selected Properties of Silicone Subjected to Accelerated Aging

2022

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This work aims to assess the impact of the type and percentage of powdered herbs on selected properties of silicone-based composites. The matrix was an addition cross-linked platinum-cured polydimethylsiloxane. The fillers were powdered thyme and sage, which were introduced at 5, 10, and 15 wt.%. The introduced fillers differed in composition, morphology, and grain size. The grain morphology showed differences in the size and shape of the introduced fillers. The qualitative and quantitative assessment resulting from the incorporation was conducted based on tests of selected properties: density, wettability, rebound resilience, hardness, and tensile strength. The incorporation slightly affected the density and wettability of the silicone. Rebound resilience and hardness results differed depending on the filler type and fraction. However, tensile strength decreased, which may be due to the matrix’s distribution of fillers and their chemical composition. Antibacterial activity evaluation against S. aureus proved the bacteriostatic properties of the composites. Accelerated aging in PBS solution further deteriorated the mechanical properties. FTIR and DSC have demonstrated the progressive aging of the materials. In addition, the results showed an overall minimal effect of fillers on the silicone chemical backbone and melting temperature. The developed materials can be used in applications that do not require high mechanical properties.

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Preparation and thermo-mechanical properties of functionalized graphene/silicone rubber nanocomposites

Cited by 13 publications

References 16 publications

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

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

Nanocarbon Reinforced Rubber Nanocomposites: Detailed Insights about Mechanical, Dynamical Mechanical Properties, Payne, and Mullin Effects

Influence of Herbal Fillers Addition on Selected Properties of Silicone Subjected to Accelerated Aging

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