Carbon nanofillers repair strategy for high-efficiency thermal conductivity enhancement of PBX composites at ultralow mass fraction

2021 ◽  
pp. 106492
Author(s):  
Guansong He ◽  
Peng Wang ◽  
Yu Dai ◽  
Yinshuang Sun ◽  
Jianhu Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Mass Fraction ◽  
High Efficiency ◽  
Thermal Conductivity Enhancement ◽  
Conductivity Enhancement ◽  
Repair Strategy ◽  
Carbon Nanofillers

scholarly journals Thermal Flow Self-Assembled Anisotropic Chemically Derived Graphene Aerogels and Their Thermal Conductivity Enhancement

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1226 ◽  
Author(s):  
Jinhui Huang ◽  
Buning Zhang ◽  
Paolo Valdiserri ◽  
Xue Huang ◽  
Guoqiang Yin ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
High Efficiency ◽  
Axial Direction ◽  
Thermal Conductivity Enhancement ◽  
Ocean Current ◽  
Conductivity Enhancement ◽  
Graphene Aerogels ◽  
Vacuum Microwave ◽  
Self Assembled

In this study, we investigated the directional heating of graphene oxide (GO) dispersion to generate a temperature gradient and form a simulated “ocean current” inside the dispersion so that GO sheets could be aligned in a directional manner and then reduced and self-assembled into anisotropic reduced graphene oxide (rGO) gel. After freeze-drying and varying degrees of vacuum microwave treatment, anisotropic chemically derived graphene aerogels (AGAs) were obtained. Through performance detection and the analysis of the results, it was verified that the AGAs with certain characteristics of “ocean current” were prepared in this experiment, and its axial direction has obvious directional arrangement. After being treated by vacuum microwave for a short time (1 min.), the axial thermal conductivity of the composite materials (AGA-adsorbed paraffin) was observed to be 1.074 W/mK, and the thermal conductivity enhancement efficiency was 995%; as compared with similar thermal conductivity enhancement composites that were found in previous studies, the proposed method in this paper has the advantages of simple processing, high efficiency, and energy conservation.

scholarly journals Preparation and Enhancement of Thermal Conductivity of Heat Transfer Oil-Based MoS2Nanofluids

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Yuan-Xian Zeng ◽  
Xiu-Wen Zhong ◽  
Zhao-Qing Liu ◽  
Shuang Chen ◽  
Nan Li
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Surface Modification ◽  
Stearic Acid ◽  
Mass Fraction ◽  
Laser Flash ◽  
Thermal Conductivity Enhancement ◽  
Flash Method ◽  
Conductivity Enhancement ◽  
Increasing Temperature

The lipophilic MoS2nanoparticles are synthesized by surface modification with stearic acid (SA). The heat transfer oil-based nanofluids, with the mass fraction of lipophilic nanoparticles varying from 0.25% up to 1.0%, are prepared and their thermal conductivity is determined at temperatures ranging from 40 to 200°C using an apparatus based on the laser flash method. It has been found that the nanofluids have higher thermal conductivity and the thermal conductivity enhancement increased not only with increasing mass fraction of nanoparticles, but also with increasing temperature in the range 40–180°C The results show a 38.7% enhancement of the thermal conductivity of MoS2nanofluid with only 1.0% mass fraction at 180°C.

Graphdiyne for significant thermal conductivity enhancement at ultralow mass fraction in polymer composites

2D Materials ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 035007 ◽  
Author(s):  
Mengjie Wang ◽  
Meizhen Liao ◽  
Linhong Li ◽  
Maohua Li ◽  
Yapeng Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Polymer Composites ◽  
Mass Fraction ◽  
Thermal Conductivity Enhancement ◽  
Conductivity Enhancement

THERMAL CONDUCTIVITY ENHANCEMENT OF MATERIAL FOR CALCIUM CHLORIDE/WATER THERMOCHEMICAL ENERGY STORAGE

2018 ◽  
Author(s):  
Takuma Ohtaki ◽  
Maho Mitsuo ◽  
Takayuki Terauchi ◽  
Hiroshi Iguchi ◽  
Keiko Fujioka ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Energy Storage ◽  
Calcium Chloride ◽  
Thermal Conductivity Enhancement ◽  
Conductivity Enhancement ◽  
Chloride Water

scholarly journals Anomalous thermal conductivity enhancement in low dimensional resonant nanostructures due to imperfections

Nanoscale ◽  
2021 ◽  
Author(s):  
Hongying Wang ◽  
Yajuan Cheng ◽  
Zheyong Fan ◽  
Yangyu Guo ◽  
Zhongwei Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Energy Conversion ◽  
Thermal Conductivity Enhancement ◽  
Heat Management ◽  
Thermoelectric Energy Conversion ◽  
Conductivity Enhancement ◽  
Thermoelectric Energy ◽  
Low Dimensional

Nanophononic metamaterials have broad applications in fields such as heat management, thermoelectric energy conversion, and nanoelectronics. Phonon resonance in pillared low-dimensional structures has been suggested to be a feasible approach...

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