Thermal conductivity enhancement and synergistic heat transfer of z-pin reinforced graphite sheet and carbon fiber hybrid composite

Li, Min; Fang, Zenong; Wang, Shaokai; Gu, Yi; Zhang, Wei

doi:10.1016/j.ijheatmasstransfer.2021.121093

Cited by 14 publications

(6 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cao et al [8] introduced heat transfer channels into unidirectional C/SiC composites and found that their thermal conductivity increased with the increase of the volume content of the heat transfer channels. Li et al [9] studied the carbon fiber (CF) z-pin-reinforced graphite sheet/ CF hybrid laminate composites, due to the thermal conduction path and synergistic heat transfer, the thickness and in-plane thermal conductivities of the composites are significantly improved after the z-pin material is implanted. Sun et al [10,11] analyzed the thermal conductivity of 3D woven composites by establishing a finite element model, and found that it increases with the decrease of porosity and the increase of fiber volume fraction.…”

Section: Introductionmentioning

confidence: 99%

High‐Temperature Thermal Conductivity of Fiber Hybrid Ceramic Matrix Composites with Different Modes

Hu,

Shan,

Zang

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

Thermal conductivity (TC) is one of the important thermal property evaluation parameters for high temperature resistant fiber reinforced composites. In this work, based on the flexible‐oriented three‐dimensional (3D) woven technology, fiber hybrid ceramic matrix composites (FH‐CMCs) with different hybrid modes were designed and fabricated by using carbon fiber and silicon carbide fiber. The representative volume element (RVE) models of fiber bundle and matrix with mesoscopic characteristics and the macroscopic RVE models with hybrid structure characteristics were established. The heat flux distribution and effective TCs of FH‐CMCs in the thickness and in‐plane directions at different temperatures were obtained by finite element analysis (FEA) and experimental tests. The results show that the FEA and experimental results of the TCs of different FH‐CMCs are in good agreement. In the range of 25∽1000°C, the effective TCs of FH‐CMC gradually decrease with the increase of temperature. The TCs in the thickness direction of different FH‐CMCs are directly proportional to the hybrid ratio, and the TCs in the in‐plane direction are inversely proportional to the hybrid ratio. The heat flux and temperature field distributions of the FH‐CMCs are mainly affected by the TCs of the components, fiber hybrid ratio and orientation, and the distribution along different directions are obviously different. The research results are helpful to provide theoretical and experimental reference for the structural design and performance improvement of hybrid composites.This article is protected by copyright. All rights reserved.

show abstract

Section: Introductionmentioning

confidence: 99%

High‐Temperature Thermal Conductivity of Fiber Hybrid Ceramic Matrix Composites with Different Modes

Hu,

Shan,

Zang

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…It is effective to improve the in-plane thermal conductivity (λ ∥ ) rather than the λ ⊥ values of composites because of the low thickness of decoration layers (less than 500 nm) which cannot form long-distance heat transfer along through-thickness directions. Recently, z-pin technology has been rapidly developed by vertically inserting thermally-conductive pins into CF laminates to form continuous pathways for rapid heat transfer [33], and the λ ⊥ value of z-pinned composites was up to 8.80 W/m•K [34]. However, such enhanced thermal conductivity for the z-pinned composites is at the cost of severely destroying ber continuity and sacri cing mechanical properties of composites [35].…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of woven copper wires with graphene foams for high thermal conductivity of carbon fiber/epoxy composites

Lu,

Sun,

Wang

et al. 2024

Adv Compos Hybrid Mater

View full text Add to dashboard Cite

Enhancing thermal conductivity of carbon ber laminated composites (CFRP) in out-of-plane directions without sacri cing mechanical properties is still challenging for fabrication of high-performance composites with structural and functional integration. In this work, a novel hybrid sandwich composite was fabricated by weaving copper wires through carbon ber (CF) fabrics, laminating graphene foams (GrFs) onto surfaces, and in ltrating with epoxy via vacuum-assisted resin transfer molding technique. High-e ciency heat transfer pathways were constructed to greatly increase out-of-plane thermal conductivity of composites with maintaining CF continuity. Microstructure, electrical property, and thermal conduction of composites were experimentally measured and theoretically simulated. The hybrid sandwich composites exhibited much higher electrical and thermal conductivity than the CFRP, and their out-of-plane thermal conductivity was up to 1.097 W/m•K, increasing by 104% in comparison with that of CFRP. Such remarkable thermal enhancement is mainly attributed to high intrinsic conductivity of the copper wire and GrF, continuous heat transfer pathways, and synergistic effect of copper wire with GrF for rapid heat transfer and diffusion. The hybrid sandwich composites show great potential to be used as high-performance materials with structural and functional integration in the elds of aerospace and transportation.

show abstract

“…In thermal conductive materials, discontinuous increases in thermal conductivity at certain filler concentrations also occur. 3 So far, there is not enough understanding of the thermal conduction mechanism of thermal conductive composites. Dynamic rheological behavior testing is considered as the first method to study the structure and properties of materials in filling systems.…”

Section: Introductionmentioning

confidence: 99%

“…Electric conduction and heat conduction have similar mechanisms, but there is no clear theoretical support for the study of percolation threshold of thermal conductive materials. In thermal conductive materials, discontinuous increases in thermal conductivity at certain filler concentrations also occur 3 . So far, there is not enough understanding of the thermal conduction mechanism of thermal conductive composites.…”

Section: Introductionmentioning

confidence: 99%

Rheological behaviors of plasticized polyvinyl chloride thermally conductive composites with oriented flaky fillers: A case study on graphite and mica

Zhang

2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this study, two oriented flaky fillers in plasticized polyvinyl chloride (P‐PVC) matrix were respectively compared on some rheological behaviors such as dynamic rheological behavior, melt flow rate, and Barus effect. By comparing and analyzing the rheological behaviors and thermal conductivity of P‐PVC/graphite and P‐PVC/mica composites with oriented fillers, it is found that the P‐PVC/graphite composites have obvious percolation thresholds of viscosity, modulus and thermal conductivity at 23.6 vol%. However, P‐PVC/mica composites did not show similar phenomenon. Moreover, the variable parameter K′ in the modified Kerner–Nielson equation was used to relate the rheological behavior, percolation concentration and thermal conductivity of the composites, and the formation of the filler network was analyzed through the rheological behavior to explain the influence of the percolation threshold in the composites caused by the change of internal structure on the thermal conductivity. It has important guiding significance for the mechanism research and comprehensive performance improvement of the filled composites.

show abstract

Thermal conductivity enhancement and synergistic heat transfer of z-pin reinforced graphite sheet and carbon fiber hybrid composite

Cited by 14 publications

References 47 publications

High‐Temperature Thermal Conductivity of Fiber Hybrid Ceramic Matrix Composites with Different Modes

High‐Temperature Thermal Conductivity of Fiber Hybrid Ceramic Matrix Composites with Different Modes

Synergistic effect of woven copper wires with graphene foams for high thermal conductivity of carbon fiber/epoxy composites

Rheological behaviors of plasticized polyvinyl chloride thermally conductive composites with oriented flaky fillers: A case study on graphite and mica

Contact Info

Product

Resources

About