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Increased through-plane thermal conductivity of injection moulded thermoplastic composites by manipulation of filler orientation

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Abstract
This paper aims to increase the through-plane thermal conductivity of polymer composites by adjusting the filler orientation. Two methods were tested: a combination of immiscible polymers (PP-PET) and adding a foaming agent to a PA6-based composite. In both cases, graphite was used as a thermal conductive filler. Compounds with 10, 20 and 30 wt-% graphite were made for both methods. The through-plane thermal conductivity increased for all PA6- foaming agent composites, while the in-plane thermal conductivity decreased compared to PA6 without foaming agent. PP-PET combinations generally outperformed the PP in through-plane performances as well. Tensile strength decreased with increasing amounts of graphite. As expected, adding foaming agents and a second phase decreased strength as well compared with virgin materials. With further optimisation, a combination of fillers and foaming agents in thermoplastics or two-phase systems could prove to be valuable in thermal management applications.
Keywords
Materials Chemistry, General Chemical Engineering, Polymers and Plastics, Ceramics and Composites, Thermal conductivity, filler orientation, two-phase composites, graphite, foaming agent, in-plane conductivity, through-plane conductivity, heat management, ALIGNMENT

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MLA
Wieme, Tom, et al. “Increased Through-Plane Thermal Conductivity of Injection Moulded Thermoplastic Composites by Manipulation of Filler Orientation.” PLASTICS RUBBER AND COMPOSITES, 2021, doi:10.1080/14658011.2020.1718326.
APA
Wieme, T., Augustyns, B., Duan, L., & Cardon, L. (2021). Increased through-plane thermal conductivity of injection moulded thermoplastic composites by manipulation of filler orientation. PLASTICS RUBBER AND COMPOSITES. https://doi.org/10.1080/14658011.2020.1718326
Chicago author-date
Wieme, Tom, Berten Augustyns, Lingyan Duan, and Ludwig Cardon. 2021. “Increased Through-Plane Thermal Conductivity of Injection Moulded Thermoplastic Composites by Manipulation of Filler Orientation.” PLASTICS RUBBER AND COMPOSITES. https://doi.org/10.1080/14658011.2020.1718326.
Chicago author-date (all authors)
Wieme, Tom, Berten Augustyns, Lingyan Duan, and Ludwig Cardon. 2021. “Increased Through-Plane Thermal Conductivity of Injection Moulded Thermoplastic Composites by Manipulation of Filler Orientation.” PLASTICS RUBBER AND COMPOSITES. doi:10.1080/14658011.2020.1718326.
Vancouver
1.
Wieme T, Augustyns B, Duan L, Cardon L. Increased through-plane thermal conductivity of injection moulded thermoplastic composites by manipulation of filler orientation. PLASTICS RUBBER AND COMPOSITES. 2021;
IEEE
[1]
T. Wieme, B. Augustyns, L. Duan, and L. Cardon, “Increased through-plane thermal conductivity of injection moulded thermoplastic composites by manipulation of filler orientation,” PLASTICS RUBBER AND COMPOSITES, 2021.
@article{8649254,
  abstract     = {{This paper aims to increase the through-plane thermal conductivity of polymer composites by adjusting the filler orientation. Two methods were tested: a combination of immiscible polymers (PP-PET) and adding a foaming agent to a PA6-based composite. In both cases, graphite was used as a thermal conductive filler. Compounds with 10, 20 and 30 wt-% graphite were made for both methods. The through-plane thermal conductivity increased for all PA6- foaming agent composites, while the in-plane thermal conductivity decreased compared to PA6 without foaming agent. PP-PET combinations generally outperformed the PP in through-plane performances as well. Tensile strength decreased with increasing amounts of graphite. As expected, adding foaming agents and a second phase decreased strength as well compared with virgin materials. With further optimisation, a combination of fillers and foaming agents in thermoplastics or two-phase systems could prove to be valuable in thermal management applications.}},
  author       = {{Wieme, Tom and Augustyns, Berten and Duan, Lingyan and Cardon, Ludwig}},
  issn         = {{1465-8011}},
  journal      = {{PLASTICS RUBBER AND COMPOSITES}},
  keywords     = {{Materials Chemistry,General Chemical Engineering,Polymers and Plastics,Ceramics and Composites,Thermal conductivity,filler orientation,two-phase composites,graphite,foaming agent,in-plane conductivity,through-plane conductivity,heat management,ALIGNMENT}},
  language     = {{eng}},
  pages        = {{8}},
  title        = {{Increased through-plane thermal conductivity of injection moulded thermoplastic composites by manipulation of filler orientation}},
  url          = {{http://dx.doi.org/10.1080/14658011.2020.1718326}},
  year         = {{2021}},
}

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