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The composites of cross-linked polyethylene with enhanced thermal conductivity.
- Source :
-
Journal of Thermal Analysis & Calorimetry . May2024, Vol. 149 Issue 10, p4385-4396. 12p. - Publication Year :
- 2024
-
Abstract
- This paper describes the composites of silane cross-linked polyethylene (PEXb) mixed with four different fillers dedicated to improving thermal conductivity, such as multi-walled carbon nanotubes, graphite, boron nitride, and mineral filler. Using the mathematical modeling, the concentration of each filler was estimated to reach the value of 0.675 W m−1 K−1 suitable for the usage PEXb in the production of geothermal pipes. From tested fillers, all improve the thermal conductivity of pure PEXb; however, above the required value, only 28 mass% of boron nitride (0.937 W m−1 K−1). It was associated with its perfect dispersion and the highest gel content achieved, also resulting in the highest flexural modulus. Graphite at 5 mass% and mineral filler at 35 mass% allowed the thermal conductivity to equal 0.622 W m−1 K−1 and 0.624 W m−1 K−1, respectively, with a simultaneous medium effect on the mechanical properties. Carbon nanotubes increased PEX's conductivity to a small extent, due to their occurrence as agglomerates. [ABSTRACT FROM AUTHOR]
- Subjects :
- *THERMAL conductivity
*MULTIWALLED carbon nanotubes
*FLEXURAL modulus
Subjects
Details
- Language :
- English
- ISSN :
- 13886150
- Volume :
- 149
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Journal of Thermal Analysis & Calorimetry
- Publication Type :
- Academic Journal
- Accession number :
- 177777330
- Full Text :
- https://doi.org/10.1007/s10973-024-13000-2