Thermally conductive high‐density polyethylene as novel phase‐change material: Application‐relevant long‐term stability
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In: Journal of Applied Polymer Science, Vol. 137.2020, No. 2, 48269, 12.07.2019.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Thermally conductive high‐density polyethylene as novel phase‐change material: Application‐relevant long‐term stability
AU - Weingrill, Helena
AU - Resch-Fauster, Katharina
AU - Lucyshyn, Thomas
AU - Zauner, Christoph
N1 - Publisher Copyright: © 2019 The Authors. Journal of Applied Polymer Science published by Wiley Periodicals, Inc.
PY - 2019/7/12
Y1 - 2019/7/12
N2 - The long-term stability of thermally conductive high-density polyethylene (HDPE)-based compounds as phase-change material (PCM) is investigated. For this purpose, the HDPE’s thermal conductivity (TC) is first enhanced via compounding two different filler types (expanded graphite and aluminum) into the polymeric matrix. Bulky specimens of these compounds are then stored in air for up to 7289 h in the melt state to investigate the compounds’ long-term stability as PCM. Their thermo-oxidative/thermal stability and their ability to maintain the isotropic material character (homogeneous distribution of the incorporated particles) is investigated. The compounds’ degradation behavior is monitored via Fourier-transform infrared spectroscopy (FTIR) and the maintenance of the homogeneous filler distribution is examined via a combined Differential Scanning Calorimetry (DSC)/Thermal Gravimetric Analysis (TGA) mapping of each exposed specimen. The storage capacity decreases minimally after 7289 h of exposure. Furthermore, the incorporated filler particles enhance the thermo-oxidative stability of HDPE as PCM. Consequently, thermally conductive HDPE is a highly interesting PCM.
AB - The long-term stability of thermally conductive high-density polyethylene (HDPE)-based compounds as phase-change material (PCM) is investigated. For this purpose, the HDPE’s thermal conductivity (TC) is first enhanced via compounding two different filler types (expanded graphite and aluminum) into the polymeric matrix. Bulky specimens of these compounds are then stored in air for up to 7289 h in the melt state to investigate the compounds’ long-term stability as PCM. Their thermo-oxidative/thermal stability and their ability to maintain the isotropic material character (homogeneous distribution of the incorporated particles) is investigated. The compounds’ degradation behavior is monitored via Fourier-transform infrared spectroscopy (FTIR) and the maintenance of the homogeneous filler distribution is examined via a combined Differential Scanning Calorimetry (DSC)/Thermal Gravimetric Analysis (TGA) mapping of each exposed specimen. The storage capacity decreases minimally after 7289 h of exposure. Furthermore, the incorporated filler particles enhance the thermo-oxidative stability of HDPE as PCM. Consequently, thermally conductive HDPE is a highly interesting PCM.
UR - http://www.scopus.com/inward/record.url?scp=85068935431&partnerID=8YFLogxK
U2 - 10.1002/app.48269
DO - 10.1002/app.48269
M3 - Article
VL - 137.2020
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
SN - 0021-8995
IS - 2
M1 - 48269
ER -
