In:
Journal of Composite Materials, SAGE Publications, Vol. 54, No. 23 ( 2020-09), p. 3447-3456
Abstract:
Polymer composites with a high electrical conductivity ( σ) to thermal conductivity ( k) ratio have been intensively investigated in recent years. While highly conductive materials, such as metallic fillers or conducting polymers, were used to enhance σ, microstructural engineering was used to decrease k by forming porous structures, such as aerogels or 3D networks. These structures, however, were mechanically vulnerable and could only have limited applications. In this study, multiwalled carbon nanotube /silicone composites with a high σ/k ratio were developed by forming a double-segregated multiwalled carbon nanotube network in the porous body of the composites. The unique microstructure of the composites was created by a novel fabrication process: layer-by-layer deposition with in-situ polymerization of silicone emulsion particles dispersed in a water solvent. This novel process yielded very thick films, 〉 200 µm, with high σ/k values, ∼2 × 10 4 (S/m)/(W/m·K). These high σ/k composites can be used for various applications, such as resistive heating elements, thermoelectric materials, and wearable thermotherapy.
Type of Medium:
Online Resource
ISSN:
0021-9983
,
1530-793X
DOI:
10.1177/0021998320927757
Language:
English
Publisher:
SAGE Publications
Publication Date:
2020
detail.hit.zdb_id:
160490-9
detail.hit.zdb_id:
2081924-9
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