Experimental study on the heat dissipation performance of straight and oblique fin heat sinks made of thermal conductive composite polymers

Timbs, Kalen; Khatamifar, Mehdi; Antunes, Elsa; Lin, Wenxian

doi:10.1016/j.tsep.2021.100848

Cited by 29 publications

(17 citation statements)

References 29 publications

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“…Crosslayer thermal conductivity of 12 W/(m K) was achieved. Timbs et al [11] investigated performance of straight and oblique fin heat sink made of thermally-conductive plastic composites. The heat sinks were additively-manufactured using Ice9 Flex (carbon filled plastic), copper filled filament (polylactic acid with copper particles) and bronze filled filament (polylactic acid with bronze particles).…”

Section: Concepts and Literature 1additive Manufacturingmentioning

confidence: 99%

Material Extrusion Additive Manufacturing and Experimental Testing of Topology-Optimised Passive Heat Sinks Using a Thermally-Conductive Plastic Filament

Huttunen¹,

Nykänen²,

Alexandersen

2022

SSRN Journal

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Section: Concepts and Literature 1additive Manufacturingmentioning

confidence: 99%

Material Extrusion Additive Manufacturing and Experimental Testing of Topology-Optimised Passive Heat Sinks Using a Thermally-Conductive Plastic Filament

Huttunen¹,

Nykänen²,

Alexandersen

2022

SSRN Journal

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“…However, most polymer materials are thermal insulators (0.1-0.5 Wm À1 K À1 ). 7,8 Therefore, researchers have been working to improve the thermal conductivity of polymer materials while maintaining their other good properties. Currently, one effective approach involves preparing thermal conductive composites by incorporating high thermal conductivity fillers into polymer materials.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity in boron nitride incorporated polyethylene/polymethyl methacrylate composites via double percolation structure

You,

Ke,

Tang

et al. 2024

Polymer Composites

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Due to the miniaturization, integration and multi‐functional development of contemporary electronic devices, there is a growing need for efficient thermal conductive composite materials. This study focuses on enhancing the dispersion of modified boron nitride (mBN) within a linear low‐density polyethylene (LLDPE) phase by incorporating LLDPE‐graft‐Aminomethylpyridine (LLDPE‐g‐Py) to non‐covalently modify BN. Additionally, polymethyl methacrylate (PMMA) and LLDPE polymers were introduced to create modified BN/LLDPE/PMMA (mBN/LLDPE/PMMA) composites with a double percolation structure. The co‐continuous structure of the polymer composites was observed by using scanning electron microscopy (SEM). By selectively locating the BN modified by LLDPE‐g‐Py within the LLDPE phase, the co‐continuous structure of the LLDPE/PMMA blend was upgraded to a double percolation structure. This double percolation structure establishes a dense and optimal heat transfer network within the polymer matrix. The thermal conductivity of the mBN/LLDPE/PMMA composite with BN loading of 40 wt% was significantly increased to 1.12 Wm−1 K−1, which was 350% higher than that of pure LLDPE, 38% higher than that of the BN/LLDPE composite, and 17% higher than that of the BN/LLDPE/PMMA composite. This study offers valuable insights into non‐covalent modification techniques for BN and the design of double percolation structures in thermal conductive polymer composites.Highlights The double percolation structure was successfully constructed by simple melt blending method with LLDPE and PMMA as matrix and BN as thermal conductive filler. The double percolation structure can significantly promote the efficiency of heat transfer inside the thermal conductive composites. A novel non‐covalent modifier LLDPE‐g‐Py was prepared to modify the surface of BN, and the selective localization of modified BN (mBN) in the LLDPE phase was realized.

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“…Since polymers have generally lower thermal properties compared to metals and ceramics, development related to thermal properties is needed. $163 million is disbursed per year because 55% of the reported failures related to electronic devices stem from overheating . Lower coefficient of thermal expansion, higher thermal conductivity as well as lightweight are desired properties for this use .…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube-, Boron Nitride-, and Graphite-Filled Polyketone Composites for Thermal Energy Management

Seki,

Tokgöz,

Öner

et al. 2023

ACS Omega

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In order to improve the thermal conductivity of 30 wt % synthetic graphite (SG)-filled polyketones (POKs), conductive fillers such as multiwall carbon nanotubes (CNTs) and hexagonal boron nitride (BN) were used in this study. Individual and synergistic effects of CNTs and BN on 30 wt % synthetic graphite-filled POK on thermal conductivity were investigated. 1, 2, and 3 wt % CNT loading enhanced the in-plane and through-plane thermal conductivities of POK-30SG by 42, 82, and 124% and 42, 94, and 273%, respectively. 1, 2, and 3 wt % BN loadings enhanced the in-plane thermal conductivity of POK-30SG by 25, 69, and 107% and through-plane thermal conductivity of POK-30SG by 92, 135, and 325%. It was observed that while CNT shows more efficient in-plane thermal conductivity than BN, BN shows more efficient through-plane thermal conductivity. The electrical conductivity value of POK-30SG-1.5BN-1.5CNT was obtained to be 1.0 × 10–5 S/cm, the value of which is higher than that of POK-30SG-1CNT and lower than that of POK-30SG-2CNT. While BN loading led to a higher heat deflection temperature (HDT) than CNT loading, the hybrid fillers of BNT and CNT led to the highest HDT value. Moreover, BN loading led to higher flexural strength and Izod-notched impact strength values than CNT loading.

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Experimental study on the heat dissipation performance of straight and oblique fin heat sinks made of thermal conductive composite polymers

Cited by 29 publications

References 29 publications

Material Extrusion Additive Manufacturing and Experimental Testing of Topology-Optimised Passive Heat Sinks Using a Thermally-Conductive Plastic Filament

Material Extrusion Additive Manufacturing and Experimental Testing of Topology-Optimised Passive Heat Sinks Using a Thermally-Conductive Plastic Filament

Enhanced thermal conductivity in boron nitride incorporated polyethylene/polymethyl methacrylate composites via double percolation structure

Carbon Nanotube-, Boron Nitride-, and Graphite-Filled Polyketone Composites for Thermal Energy Management

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