High thermal conductivity graphene oxide/carbon nanotubes/butyl rubber composites prepared by a dry ice expansion pre‐dispersion flocculation method

2021 ◽  
pp. 51897
Author(s):  
Huiguang Bian ◽  
Junxiu Xue ◽  
Guoqiang Hao ◽  
Yingjie Hao ◽  
Miao Xie ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Butyl Rubber ◽  
High Thermal Conductivity ◽  
Rubber Composites ◽  
Dry Ice

scholarly journals Effect of graphene oxide coatings on the structure of polyacrylonitrile fibers during pre-oxidation process

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28146-28152 ◽  
Author(s):  
Mengmeng Qiao ◽  
Haijuan Kong ◽  
Xiaoma Ding ◽  
Luwei Zhang ◽  
Muhuo Yu
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Oxidation Process ◽  
High Thermal Conductivity ◽  
Oxide Coatings ◽  
Pan Fiber ◽  
Oxidation Experiment ◽  
Pan Fibers

In this paper, GO is mainly applied in the pre-oxidation experiment process of PAN fibers, and the exothermic heat in the PAN fiber pre-oxidation process is taken away by the GO with super-high thermal conductivity to accelerate the pre-oxidation progress.

scholarly journals Experimental investigations on graphene oxide/rubber composite thermal conductivity

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Joanna Wilk ◽  
Robert Smusz ◽  
Ryszard Filip ◽  
Grzegorz Chmiel ◽  
Tomasz Bednarczyk
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Thermal Properties ◽  
Reduced Graphene Oxide ◽  
Matrix Material ◽  
Oxide Content ◽  
Rubber Composites ◽  
Plate Method ◽  
Basic Matrix ◽  
Reduced Graphene

Abstract Graphene oxide/rubber composites were experimentally investigated for obtaining their thermal properties. Three kinds of the composite matrix material have been used: NBR, HNBR and FKM. The reduced graphene oxide in the form of crumped flakes has been applied as the filler influencing on thermal conductivity of the composites. Two values of graphene oxide weight concentration have been taken into account in the investigation. Thermal conductivity of the composites and basic matrix has been measured by the professional apparatus with the use of the guarded heat plate method. Before measurements the preliminary tests using the simplified comparative method have been performed. The results obtained, both from preliminary tests and using the guarded heat plate method, show an increase in thermal conductivity with increasing the reduced graphene oxide content in the composite. The experimental investigation allowed to determine not only the increase in thermal properties of graphene oxide/rubber composites compared to the basic matrix, but also the absolute values of thermal conductivities. Additionally, the SEM analysis showed that the tested composite samples contain agglomerates of the rGO nanoparticles. The occurrence of agglomerates could affect the composite thermal properties. This was noticed in the comparatively measurements of the temperature of different composites during the heating of samples tested. The maximum enhancement of thermal conductivity obtained was about 11% compared to the basis matrix of the composites tested.

Experimental Study on Thermal Conductivity Property of Rubber Composites Filled with Carbon Nanotubes

2011 ◽  
Vol 221 ◽  
pp. 373-376 ◽  
Author(s):  
Ze Peng Wang ◽  
Yan He
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Experimental Study ◽  
Carbon Black ◽  
Natural Rubber ◽  
Rubber Composites ◽  
Conductivity Property

Thermal conductivity of rubber composites filled with CNTs (carbon nanotubes) and N234 CB (carbon black) were investigated. Result indicated that Thermal conductivity of NR (natural rubber) filled with CNTs is higher than that of NR filled with CB in the case of the same filling amount. CNTs can better improve the performance of thermal conduct of rubber composites than CB. The more the filling content of CNTs is, the higher thermal conductivity of NR composites.

scholarly journals The effect of doping graphene oxide on the structure and property of polyimide-based graphite fibre

RSC Advances ◽  
2017 ◽  
Vol 7 (89) ◽  
pp. 56602-56610 ◽  
Author(s):  
Meng Xiao ◽  
Na Li ◽  
Zhaokun Ma ◽  
Huaihe Song ◽  
Kang Lu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Mechanical Property ◽  
Graphene Oxide ◽  
High Thermal Conductivity ◽  
Structure And Property ◽  
Polyimide Fibers ◽  
Graphite Fibers ◽  
Graphite Fibre ◽  
Effect Of Doping

Graphene oxide was added to polyimide fibers for preparing composite graphite fibers with high thermal conductivity and mechanical property.

Enhancement of heat conduction in carbon nanotubes filled with fullerene molecules

2015 ◽  
Vol 17 (41) ◽  
pp. 27520-27526 ◽  
Author(s):  
Liu Cui ◽  
Yanhui Feng ◽  
Xinxin Zhang
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Mass Transfer ◽  
Heat Conduction ◽  
High Thermal Conductivity ◽  
Low Frequencies

C60-encapsulation-induced high thermal conductivity of carbon nanopeapods owing to phonon couplings at low frequencies and enhancement in mass transfer.

scholarly journals Graphene oxide-loaded shortening as an environmentally friendly heat transfer fluid with high thermal conductivity

2017 ◽  
Vol 21 (5) ◽  
pp. 2247-2254
Author(s):  
Thammasit Vongsetskul ◽  
Peeranut Prakulpawong ◽  
Panmanas Sirisomboon ◽  
Jonggol Tantirungrotechai ◽  
Chanasuk Surasit ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Electron Microscopy ◽  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Environmentally Friendly ◽  
High Thermal Conductivity ◽  
Chemical Degradation ◽  
Heat Transfer Fluid ◽  
Increasing Temperature ◽  
Scanning Electron

Graphene oxide-loaded shortening (GOS), an environmentally friendly heat transfer fluid with high thermal conductivity, was successfully prepared by mixing graphene oxide (GO) with a shortening. Scanning electron microscopy revealed that GO particles, prepared by the modified Hummer?s method, dispersed well in the shortening. In addition, the latent heat of GOS decreased while their viscosity and thermal conductivity increased with increasing the amount of loaded GO. The thermal conductivity of the GOS with 4% GO was higher than that of pure shortening of ca. three times, from 0.1751 to 0.6022 W/mK, and increased with increasing temperature. The GOS started to be degraded at ca. 360?C. After being heated and cooled at 100?C for 100 cycles, its viscosity slightly decreased and no chemical degradation was observed. Therefore, the prepared GOS is potentially used as environmentally friendly heat transfer fluid at high temperature.

Super-high thermal conductivity of polyamide-6/graphene-graphene oxide composites through in situ polymerization

2016 ◽  
Vol 29 (5) ◽  
pp. 585-594 ◽  
Author(s):  
Jingjing Chen ◽  
Xiangnan Chen ◽  
Fanbin Meng ◽  
Dan Li ◽  
Xin Tian ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
In Situ Polymerization ◽  
Polyamide 6 ◽  
Filler Loading ◽  
High Thermal Conductivity ◽  
Heat Conducting ◽  
Interface Adhesion ◽  
Graphene Dispersion ◽  
Key Factor

Graphene is often used to improve the thermal conductivity of polymers but usually with high amount. The key factor that limits the thermal conductivity is graphene agglomeration as well as the incompatible interface between graphene and polymer. Here, we report super-high thermal conductivity of polyamide-6 (PA6) composites achieved by adding small amounts of graphene oxide (GO)-stabilized graphene dispersions (graphene-GO). The introduction of GO not only acts as an effective dispersant for graphene due to the non-covalent π-stacking interactions but also participates in PA6 polymerization. Therefore, the issues associated with graphene dispersion in PA6 can be resolved and the interface adhesion enhanced by adding small amounts of graphene-GO. Furthermore, this approach reduces the tendency for decreased crystallinity. All these factors enhance the formation of heat conducting pathways among the graphene sheets. Thus, compared with graphene, graphene-GO enhances thermal conductivity at lower filler loading levels by enhancing graphene dispersion and interface adhesion.

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