Compatible paraffin@SiO2 microcapsules/polydimethylsiloxane composites with heat storage capacity and enhanced thermal conductivity for thermal management

2021 ◽  
pp. 109192
Author(s):  
Yuechen Zhou ◽  
Shushan Li ◽  
Yu Zhao ◽  
Ziye Ling ◽  
Zhengguo Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Management ◽  
Storage Capacity ◽  
Heat Storage ◽  
Enhanced Thermal Conductivity

scholarly journals Fabrication of Lignin-Based Nano Carbon Film-Copper Foil Composite with Enhanced Thermal Conductivity

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1681 ◽  
Author(s):  
Bin Luo ◽  
Mingchao Chi ◽  
Qingtong Zhang ◽  
Mingfu Li ◽  
Changzhou Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Management ◽  
Copper Foil ◽  
Infrared Imaging ◽  
Carbon Film ◽  
Composite Films ◽  
Annealing Treatment ◽  
Thermal Infrared Imaging ◽  
Nano Carbon ◽  
Enhanced Thermal Conductivity

Technical lignin from pulping, an aromatic polymer with ~59% carbon content, was employed to develop novel lignin-based nano carbon thin film (LCF)-copper foil composite films for thermal management applications. A highly graphitized, nanoscale LCF (~80–100 nm in thickness) was successfully deposited on both sides of copper foil by spin coating followed by annealing treatment at 1000 °C in an argon atmosphere. The conditions of annealing significantly impacted the morphology and graphitization of LCF and the thermal conductivity of LCF-copper foil composite films. The LCF-modified copper foil exhibited an enhanced thermal conductivity of 478 W m−1 K−1 at 333 K, which was 43% higher than the copper foil counterpart. The enhanced thermal conductivity of the composite films compared with that of the copper foil was characterized by thermal infrared imaging. The thermal properties of the copper foil enhanced by LCF reveals its potential applications in the thermal management of advanced electronic products and highlights the potential high-value utility of lignin, the waste of pulping.

Incorporating Ag Nanowires into Graphene Nanosheets for Enhanced Thermal Conductivity: Implications for Thermal Management

2020 ◽  
Vol 3 (6) ◽  
pp. 6061-6070
Author(s):  
Ya Li ◽  
Xu Li ◽  
Md Mofasserul Alam ◽  
Dongbo Yu ◽  
Jibin Miao ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Management ◽  
Graphene Nanosheets ◽  
Ag Nanowires ◽  
Enhanced Thermal Conductivity

Modified graphene/polyimide composite films with strongly enhanced thermal conductivity

Nanoscale ◽  
2019 ◽  
Vol 11 (17) ◽  
pp. 8219-8225 ◽  
Author(s):  
Xian Wu ◽  
Haoliang Li ◽  
Kui Cheng ◽  
Hanxun Qiu ◽  
Junhe Yang
Keyword(s):  
Thermal Conductivity ◽  
Thermal Management ◽  
Composite Films ◽  
Highly Efficient ◽  
Graphene Films ◽  
Modified Graphene ◽  
Enhanced Thermal Conductivity

An effective “modified-welding” approach to prepare graphene films with excellent thermal conductivity and flexibility for highly efficient thermal management.

scholarly journals Evaluation of Energy Performance and Thermal Comfort Considering the Heat Storage Capacity and Thermal Conductivity of Biocomposite Phase Change Materials

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2191
Author(s):  
Su-Gwang Jeong ◽  
Taemin Lee ◽  
Jeonghun Lee
Keyword(s):  
Thermal Conductivity ◽  
Energy Consumption ◽  
Thermal Comfort ◽  
Phase Change ◽  
Chemical Stability ◽  
Phase Change Materials ◽  
Storage Capacity ◽  
Heat Storage ◽  
Building Energy ◽  
Vacuum Impregnation

The application of phase change materials (PCMs) has been verified as an effective strategy for improving energy efficiency and reducing greenhouse gas emissions. Biocomposite PCMs (Bc-PCM) exhibit large latent heat, chemical stability, and a wide temperature range. In this study, thermal conductivity improved Bc-PCM (TBc-PCM) was made via vacuum impregnation with graphene nanoplatelets (GNPs). Chemical stability analysis and thermal performance analyses of the Bc-PCM and TBc-PCM were carried out as well as building energy simulations and thermal comfort analyses. Our results show Bc-PCM showed a higher heat storage capacity and enthalpy value compared to TBc-PCM. TBc-PCM exhibited a 378% increase in thermal conductivity compared to Bc-PCM. Building energy simulation results revealed that annual heating and cooling energy consumption decreased as the thickness of the PCM layer increased. In addition, the Bc-PCM with a larger PCM capacity was more effective in reducing energy consumption during the heating period. On the other hand, the cooling energy reduction effect was greater when TBc-PCM with high thermal conductivity was applied because of the high heat transfer during the cooling period. Thermal comfort evaluation revealed it was more comfortable when PCM was applied.

Flexible polyurethane/boron nitride composites with enhanced thermal conductivity

2019 ◽  
Vol 32 (3) ◽  
pp. 324-333 ◽  
Author(s):  
Ting Fei ◽  
Yanbao Li ◽  
Baocheng Liu ◽  
Chengbo Xia
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Thermal Management ◽  
High Stability ◽  
Heat Dissipation ◽  
Thermoplastic Polyurethane ◽  
Thermally Conductive ◽  
Mechanical Bending ◽  
Flexible Polyurethane ◽  
Enhanced Thermal Conductivity

Polymer-based composites with high thermal conductivity have great potential application as thermal management materials. This study was devoted to improving the thermal conductivity of the flexible thermoplastic polyurethane (TPU) by employing boron nitride (BN) as heat filler. We prepared flexible and thermally conductive TPU/BN composite via solution mixing and hot pressing. The thermal conductivity of the TPU/BN composite with 50 wt% BN (32.6 vol%) reaches 3.06 W/m·K, approximately 1290% enhancement compared to that of pure TPU (0.22 W/m·K). In addition, the thermal conductivity of our flexible TPU/BN composite with 30 wt% BN is almost not varied (a decrease of only 2.5%) after 100 cycles of mechanical bending, which indicates the high stability of heat conduction of our flexible TPU/BN composite under mechanical bending. The maximum tensile strength of the TPU/BN composite with 5 wt% BN is 48.9 MPa, 14% higher than that of pure TPU (43.2 MPa). Our flexible and highly thermally conductive TPU/BN composites show promise for heat dissipation in various applications in the electronics field.

Effect of γ-PVDF on enhanced thermal conductivity and dielectric property of Fe-rGO incorporated PVDF based flexible nanocomposite film for efficient thermal management and energy storage applications

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 37773-37783 ◽  
Author(s):  
Sumanta Kumar Karan ◽  
Amit Kumar Das ◽  
Ranadip Bera ◽  
Sarbaranjan Paria ◽  
Anirban Maitra ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Energy Storage ◽  
Dielectric Property ◽  
Energy Density ◽  
Crystallite Size ◽  
Thermal Management ◽  
Nanocomposite Film ◽  
Energy Storage Applications ◽  
Enhanced Thermal Conductivity

Dependence of thermal conductivity and energy density on the amount of crystalline γ-phase and γ-crystallite size of PVDF in Fe-rGO/PVDF nanocomposites has been explored.

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