Preparation of 3D BN-BT/PVDF skeleton structure composites for high thermal conductivity and energy storage

Guan, Lizhu; Zhao, Xin; Ji, Zengren; Jiang, Mingxing; Cui, Yongai; Weng, Ling; Wang, Xuan; Liu, Junwang

doi:10.1016/j.polymertesting.2023.108126

Cited by 10 publications

(2 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This comparison is a compelling demonstration of the central-radial skeleton’s ability to facilitate rapid heat transfer. As illustrated in Table S2, a comparative analysis of thermal conductivity reveals that the central-radial CNT skeleton/EP composites in this study exhibited a notable enhancement in thermal conductivity of up to 200.96% at a low filler content. − ,− This performance surpasses that achieved in composites prepared by prior research efforts.…”

Section: Resultsmentioning

confidence: 99%

Creating Biomimetic Central-Radial Skeletons with Efficient Mass Adsorption and Transport

Zhang,

Bai,

Zeng

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Porous skeletons play a crucial role in various applications. Their fundamental significance stems from their remarkable surface area and capacity to enhance mass adsorption and transport. Freeze-casting is a commonly utilized methodology for the production of porous skeletons featuring vertically aligned channels. Nevertheless, the resultant single-oriented skeleton displays anisotropic mass transfer characteristics and suboptimal mechanical properties. Our investigation was motivated by the intricate microstructures observed in botanical organisms, leading us to devise an advanced freeze-casting methodology. A novel central-radial skeleton with significantly enhanced capabilities has been successfully engineered. The central-radial architecture demonstrates superior refinement and uniformity in its pore structure, featuring an axial mass transfer axis and meticulously arranged radial channels. This microstructure endows the porous skeleton with a higher compression resilience, superior adsorption rate, and structural maintenance capacity. Through a rigorous examination of the thermal conductivity of skeleton-filled composites coupled with comprehensive COMSOL simulations, the exceptional characteristics of this unique structural arrangement have been definitively ascertained. Furthermore, the efficacy of implementing this skeleton in chip cooling and photothermal conversion has been convincingly substantiated. Our pioneering method of microstructure preparation, employing freeze-casting, holds immense potential in expanding its applicability and inspiring innovative concepts for the advancement of novel structures.

show abstract

Section: Resultsmentioning

confidence: 99%

Creating Biomimetic Central-Radial Skeletons with Efficient Mass Adsorption and Transport

Zhang,

Bai,

Zeng

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The construction of effective thermal conductive pathways with a network structure can improve the thermal management performance of thermally conductive composites. Currently, the main methods to construct the network structure of a thermally conductive filler are the foam method, , freeze-drying orientation method, , magnetic orientation, , force orientation, , electrostatic flocking method, , 3D printing method, , etc. For the carbon fiber thermally conductive filler, the network structure can be constructed with an effective thermal conductivity pathway, which not only causes agglomeration but is also very favorable to the low carbon economy.…”

Section: Introductionmentioning

confidence: 99%

In Situ Construction of High-Thermal-Conductivity and Negative-Permittivity Epoxy/Carbon Fiber@Carbon Composites with a 3D Network by High-Temperature Chemical Vapor Deposition

Jiang,

Xu,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Modern highly integrated microelectronic devices are unable to dissipate heat over time, which greatly affects the operating efficiency and service life of electronic equipment. Constructing high-thermal-conductivity composites with 3D network structures is a hot research topic. In this article, carbon fiber felt (CFF) was prepared by airflow netting forming technology and needle punching combined with stepped heat treatment. Then, carbon-coated carbon fiber felt (C@CFF) with a three-dimensional network structure was constructed in situ by high-temperature chemical vapor deposition (CVD). Finally, high-temperature treatment was used to improve the degree of crystallinity of C@CFF and further enhance its graphitization. The epoxy (EP) composites were prepared by simple vacuum infiltration–molding curing. The test results showed that the in-plane thermal conductivity (K ∥) and through-plane thermal conductivity (K ⊥) of EP/C@CFF-2300 °C could reach up to 13.08 and 2.78 W/mK, respectively, where the deposited carbon content was 11.76 vol %. The in-plane thermal conductivity enhancement (TCE) of EP/C@CFF-2300 °C was improved by 6440 and 808% compared to those of pure EP and EP/CFF, respectively. The high-temperature treatment greatly provides an improvement in thermal conductivity for the in-plane and the through-plane. Infrared imaging showed excellent thermal management properties of the prepared epoxy composites. EP/C@CFF-2300 °C owned an in-plane AC conductivity of up to 0.035 S/cm at 10 kHz, and Lorentz–Drude-type negative permittivity behaviors were observed at the tested frequency region. The CFF thermally conductive composites prepared by the above method have a broad application prospect in the field of advanced thermal management and electromagnetics.

show abstract

Enhanced thermal conductivity of polypropylene/polyamide 6 composites via optimizing the selective distribution of h‐BN and NH₂‐CNTs hybrid fillers within the co‐continuous structure

Jing,

Meng,

Liu

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

Achieving high thermal conductivity in composites with low filler content is a major challenge in current research. In this paper, polypropylene (PP) and polyamide 6 (PA6) were used as polymer matrix, and the hybrid thermal conductive filler, formed by hexagonal boron nitride (h‐BN) and aminated carbon nanotubes (NH2‐CNTs), was integrated into matrix for the fabrication of thermal conductive composites (PP/PA6/h‐BN and PP/PA6/h‐BN@CNTs) via two‐step melt blending technology. The thermal conductive fillers were selectively distributed in a phase of the polymer matrix with a co‐continuous structure, forming a thermal conductive path with a three‐dimensional network structure. The results show that when the content of h‐BN reaches 25 wt%, the thermal conductivity of the PP/PA6/h‐BN and PP/PA6/h‐BN@CNTs composites was 199% and 300% higher than that of PP/PA6, respectively. Through testing the volume resistivity of the composites, it was confirmed that PP/PA6/h‐BN@CNTs composites maintain good electrical insulation. Both composites demonstrated remarkable thermal conductivity and outstanding electrical insulation. This research provides a facile way to prepare highly thermal conductivity polymer composites with excellent processing performances and electrical insulation.Highlights h‐BN@CNTs hybrid fillers with sandwich structure were prepared. A two‐step blending method was used to control the selective distribution of hybrid fillers in a phase of the polymer matrix with a co‐continuous structure. The hybrid filler formed a thermal conductive path with a three‐dimensional network structure in the collective. PP/PA6/h‐BN@CNTs composites demonstrated remarkable thermal conductivity, outstanding electrical insulation and favorable processing performances.

show abstract

Preparation of 3D BN-BT/PVDF skeleton structure composites for high thermal conductivity and energy storage

Cited by 10 publications

References 44 publications

Creating Biomimetic Central-Radial Skeletons with Efficient Mass Adsorption and Transport

Creating Biomimetic Central-Radial Skeletons with Efficient Mass Adsorption and Transport

In Situ Construction of High-Thermal-Conductivity and Negative-Permittivity Epoxy/Carbon Fiber@Carbon Composites with a 3D Network by High-Temperature Chemical Vapor Deposition

Enhanced thermal conductivity of polypropylene/polyamide 6 composites via optimizing the selective distribution of h‐BN and NH₂‐CNTs hybrid fillers within the co‐continuous structure

Contact Info

Product

Resources

About

Preparation of 3D BN-BT/PVDF skeleton structure composites for high thermal conductivity and energy storage

Cited by 10 publications

References 44 publications

Creating Biomimetic Central-Radial Skeletons with Efficient Mass Adsorption and Transport

Creating Biomimetic Central-Radial Skeletons with Efficient Mass Adsorption and Transport

In Situ Construction of High-Thermal-Conductivity and Negative-Permittivity Epoxy/Carbon Fiber@Carbon Composites with a 3D Network by High-Temperature Chemical Vapor Deposition

Enhanced thermal conductivity of polypropylene/polyamide 6 composites via optimizing the selective distribution of h‐BN and NH2‐CNTs hybrid fillers within the co‐continuous structure

Contact Info

Product

Resources

About

Enhanced thermal conductivity of polypropylene/polyamide 6 composites via optimizing the selective distribution of h‐BN and NH₂‐CNTs hybrid fillers within the co‐continuous structure