Thermophysical Properties of Polymer Materials with High Thermal Conductivity

Lebedev, S.M.; Gefle, O.S.; Dneprovskii, S. N.; Amitov, E. T.

doi:10.1007/s11182-015-0491-z

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…Lebedev and Gefle worked on enhancing thermal conductivity and thermal diffusivity by incorporating micro and sub-micro particles with high thermal conductivity into the polymer matrix. [69] Linear low-density polyethylene (LLDPE) was used as a polymer matrix with GE-3 graphite grade and with the mean particle size of 65 μm at various filler contents of 0-30 vol%. Thermally conductive composites with K eff as high as 6.5 Wm À1 K À1 are produced and the percolation threshold at 10-15 vol% is observed.…”

Section: Micro Filled Compositesmentioning

confidence: 99%

A review on high thermally conductive polymeric composites

Ghaffari‐Mosanenzadeh

Tafreshi

Dammen‐Brower

et al. 2021

Polymer Composites

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Polymers are known as thermally insulated materials with reported effective thermal conductivity (K eff ) in the range of 0.1 to 0.5 Wm À1 K À1 . However, increasing demand for smaller and more powerful electronics has created the need for thermally conductive polymers for use in heat exchangers and electronic packaging applications. Given this background, much research has been done over the past two decades to increase the K eff of polymers. Based on the strategy involved, those works can be divided into two main categories:(i) increasing the K eff of the neat polymer by aligning its chains orientation; and (ii) increasing polymer K eff by fabrication of polymeric composites with thermally conductive filler networks. Among these two strategies, the former is limited to nanoscale laboratory research and is difficult to scale up for mass production. Therefore, this work is mainly focused on the latter category, thermally conductive polymeric composites, which has a higher potential for large-scale production. This work aims to summarize, evaluate, and highlight the successful strategies of the recent efforts in enhancing the thermal conductivity of polymer composites. The major achievements, future challenges, and the outlooks of high thermally conductive polymeric composites are presented by analyzing the results of about 300 works.

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Section: Micro Filled Compositesmentioning

confidence: 99%

A review on high thermally conductive polymeric composites

Ghaffari‐Mosanenzadeh

Tafreshi

Dammen‐Brower

et al. 2021

Polymer Composites

View full text Add to dashboard Cite

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“…Therefore, the main challenge to obtaining a consistent flow of thermally conductive composite during printing is to achieve percolation at low filler content to keep the viscosity within workable range. Therefore, to enhance TC, a low thermal percolation threshold is necessary in order to process the composite by FDM [38]. Different parameters play a key role in defining the optimal percolation value such as the cost of the functional material, the 3D printer specifications (e.g.…”

Section: Rheologymentioning

confidence: 99%

“…An interconnected system of filler particles (3D network) is needed to create a conductive path. Lebedev et al [38] prepared composites of PLA with graphite and CNTs using a mixer having counter-rotating blades before post-processing by FDM. They were able to obtain a TC of 4 W/mK for composites with 30 wt% graphite and 1 wt% CNTs (TC method: hot wire).…”

Section: Void Formation and Printing Direction Effects On Tcmentioning

confidence: 99%

Fused deposition modelling (FDM) of composites of graphene nanoplatelets and polymers for high thermal conductivity: a mini-review

Guerra

Wan

McNally

2020

Functional Composite Mater

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Composites of polymers and the graphene family of 2D materials continue to attract great interest due their potential to dissipate heat, thus extending the in-service life of electronic and other devices. Such composites can be 3D printed using Fused Deposition Modelling into complex bespoke structures having enhanced properties, including thermal conductivity in different directions. While there are controversial opinions on the limitations of FDM for large-scale and high volume production (e.g. long production times, and expensive printers required), FDM is an innovative solution to the manufacture of small objects where effective thermal management is required and it is a valid alternative for the manufacture of (micro)-electronic components. There are few papers published on the FDM of functional composite materials based on graphene(s). In this mini-review, we describe the many technical challenges that remain to successful printing of these composites by FDM, including orientation effects, void formation, printing and feeding rates, nozzle and printing bed temperatures and the role each has in determining the thermal conductivity of any composite product made by FDM. We also compare these initial reports with those on FDM of other and related carbonaceous fillers, such as multi-walled carbon nanotubes and carbon fibre.

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“…Thermally conductive polymer materials and their characterization. Filled polymer materials on the basis of polyamide (PA) and linear low density polyethylene (LLDPE) were used for fabrication of heat sinks for LED lamps [12]. All TCPMs were prepared by means of the twin screw extruder TSE 20/40D (Brabender, Germany).…”

Section: Experimental Samples and Techniquementioning

confidence: 99%

Temperature Distribution on the Surface of LED Lamps

Lebedev

Gurin

2016

KEM

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In this work, new thermally conductive polymer materials (TCPMs) on the base of polymer/graphite composites for cooling system of LED lamps were developed. Heat sinks for LED lamps were fabricated and investigated. Thermal conductivity and thermal diffusivity for all TCPMs were investigated by thermal analyzers XFA 500 and THB 100. Infrared thermal imager was used to study the temperature distribution of the LED lamps. Experimental and numerical investigations have shown high efficiency of polymer/graphite heat sinks for LED lamps.

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Thermophysical Properties of Polymer Materials with High Thermal Conductivity

Cited by 3 publications

References 9 publications

A review on high thermally conductive polymeric composites

A review on high thermally conductive polymeric composites

Fused deposition modelling (FDM) of composites of graphene nanoplatelets and polymers for high thermal conductivity: a mini-review

Temperature Distribution on the Surface of LED Lamps

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