期刊
POLYMERS
卷 13, 期 13, 页码 -出版社
MDPI
DOI: 10.3390/polym13132191
关键词
shape memory; polymer composites; thermally shrinkable materials; thermal conductivity; electrical insulation
The study evaluated the potential application of functional shrinkable materials in thermally conductive electrical insulation elements, with a focus on the use of boron nitride powder filled polyethylene composite for enhanced thermal conductivity. The investigation also observed a full shape memory effect in the crosslinked samples.
The evaluation of a possible application of functional shrinkable materials in thermally conductive electrical insulation elements was investigated. The effectiveness of an electron beam and gamma radiation on the crosslinking of a selected high density polyethylene grade was analyzed, both qualitatively and quantitatively. The crosslinked polymer composites filled with ceramic particles were successfully fabricated and tested. On the basis of the performed investigation, it was concluded that the selected filler, namely a boron nitride powder, is suitable for the preparation of the crosslinked polymer composites with enhanced thermal conductivity. The shape memory effect was fully observed in the crosslinked samples with a recovery factor reaching nearly 99%. There was no significant influence of the crosslinking, stretching, and recovery of the polymer composite during shape memory phenomenon on the value of thermal conductivity. The proposed boron nitride filled polyethylene composite subjected to crosslinking is a promising candidate for fabrication of thermally shrinkable material with enhanced heat dissipation functionality for application as electrically insulating components.
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