Fabrication of high-performance thermally conductive phase change material composites with porous ceramic filler network for efficient thermal management

Lee, Wondu; Jia, Hong; Song, Jong−In; Yang, Wonyoung; Kim, Jooheon

doi:10.1016/j.compscitech.2023.110092

“…[14][15][16] However, their thermal conductivity coefficients (λ) are relatively low (~0.2 W/(m • K)). Although researchers commonly incorporate thermally conductive and electrically insulating fillers, such as boron nitride (BN), aluminum nitride (AlN), and silicon carbide (SiC), etc., into polymers to fabricate thermally conductive and electrically insulating composites, [17][18][19] the value of λ of the reported thermally conductive and electrically insulating polymer composites are not particularly outstanding (with λ difficult to exceed 10 W/(m • K)). [20] Silver nanowires (AgNWs), characterized by high λ (~420 W/(m • K)), large aspect ratios, and good chemical stability, [21,22] thus become ideal thermally conductive fillers for preparing high-performance thermally conductive polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Highly Thermally Conductive Aramid Nanofiber Composite Films with Synchronous Visible/Infrared Camouflages and Information Encryption

Han,

Ruan,

He

et al. 2024

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The highly thermally conductive composites that combine visible light/infrared camouflage and information encryption has been endowed with great significance in facilitating the application of 5G communication technology in military fields. This work uses aramid nanofibers (ANF) as the matrix, hetero‐structured silver nanowires@boron nitride nanosheets (AgNWs@BNNS) prepared by in‐situ growth as fillers, which are combined to fabricate sandwich structured thermally conductive and electrically insulating (BNNS/ANF)‐(AgNWs@BNNS)‐(BNNS/ANF) (denoted as BAB) composite films by “filtration self‐assembly, air spraying, and hot‐pressing” method. When the mass ratio of AgNWs@BNNS to BNNS is 1:1 and the total mass fraction is 50 wt%, BAB composite film has the maximum in‐plane thermal conductivity coefficient (λ∥ of 10.36 W/(m·K)), excellent electrical insulation (breakdown strength and volume resistivity of 41.5 kV/mm and 1.21×1015 Ω·cm, respectively) and mechanical properties (tensile strength of 170.9 MPa). 50 wt% BAB composite film could efficiently reduce the equilibrium temperature of the central processing unit (CPU) working at full power, resulting in 7.0oC lower than that of the CPU solely integrated with ANF directly. In addition, BAB composite film boasts adaptive visible light/infrared dual camouflage properties on cement roads and jungle environments, as well as the function of fast encryption of QR code information within 24 seconds.

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“…[14][15][16] However, their thermal conductivity coefficients (λ) are relatively low (~0.2 W/(m • K)). Although researchers commonly incorporate thermally conductive and electrically insulating fillers, such as boron nitride (BN), aluminum nitride (AlN), and silicon carbide (SiC), etc., into polymers to fabricate thermally conductive and electrically insulating composites, [17][18][19] the value of λ of the reported thermally conductive and electrically insulating polymer composites are not particularly outstanding (with λ difficult to exceed 10 W/(m • K)). [20] Silver nanowires (AgNWs), characterized by high λ (~420 W/(m • K)), large aspect ratios, and good chemical stability, [21,22] thus become ideal thermally conductive fillers for preparing high-performance thermally conductive polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Highly Thermally Conductive Aramid Nanofiber Composite Films with Synchronous Visible/Infrared Camouflages and Information Encryption

Han,

Ruan,

He

et al. 2024

Angewandte Chemie

8

0

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The highly thermally conductive composites that combine visible light/infrared camouflage and information encryption has been endowed with great significance in facilitating the application of 5G communication technology in military fields. This work uses aramid nanofibers (ANF) as the matrix, hetero‐structured silver nanowires@boron nitride nanosheets (AgNWs@BNNS) prepared by in‐situ growth as fillers, which are combined to fabricate sandwich structured thermally conductive and electrically insulating (BNNS/ANF)‐(AgNWs@BNNS)‐(BNNS/ANF) (denoted as BAB) composite films by “filtration self‐assembly, air spraying, and hot‐pressing” method. When the mass ratio of AgNWs@BNNS to BNNS is 1:1 and the total mass fraction is 50 wt%, BAB composite film has the maximum in‐plane thermal conductivity coefficient (λ∥ of 10.36 W/(m·K)), excellent electrical insulation (breakdown strength and volume resistivity of 41.5 kV/mm and 1.21×1015 Ω·cm, respectively) and mechanical properties (tensile strength of 170.9 MPa). 50 wt% BAB composite film could efficiently reduce the equilibrium temperature of the central processing unit (CPU) working at full power, resulting in 7.0oC lower than that of the CPU solely integrated with ANF directly. In addition, BAB composite film boasts adaptive visible light/infrared dual camouflage properties on cement roads and jungle environments, as well as the function of fast encryption of QR code information within 24 seconds.

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Flexible AIE/PCM composite fiber with biosensing of alcohol, fluorescent anti-counterfeiting and body thermal management functions

Lin,

Feng,

Huang

et al. 2025

Biosensors and Bioelectronics

5

0

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Fabrication of high-performance thermally conductive phase change material composites with porous ceramic filler network for efficient thermal management

Cited by 15 publications

References 37 publications

Highly Thermally Conductive Aramid Nanofiber Composite Films with Synchronous Visible/Infrared Camouflages and Information Encryption

Highly Thermally Conductive Aramid Nanofiber Composite Films with Synchronous Visible/Infrared Camouflages and Information Encryption

Highly Thermally Conductive Aramid Nanofiber Composite Films with Synchronous Visible/Infrared Camouflages and Information Encryption

Flexible AIE/PCM composite fiber with biosensing of alcohol, fluorescent anti-counterfeiting and body thermal management functions

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