ZnO nanowire‐decorated Al₂O₃/graphene aerogel for improving the thermal conductivity of epoxy composites

Abstract

It is of great significance to study new thermal conductivity filler in practical thermal management application. In this study, a multi‐scale assembled thermal conductivity composite Al2O3‐ZnO NWs/GO/EP was developed. The test results showed that the composite has good thermal conductivity and mechanical properties with low filler content. When the GO content is 1.5 wt% and the Al2O3‐ZnO NWs content is 25 wt%, the thermal conductivity of the composites reaches 2.15 W/mK, which is improved by about 1032% compared with the pure epoxy resin, and the tensile strength of the composites is maintained at a high level. The problems of high filling capacity and poor mechanical properties of alumina filler were effectively solved. It provides a new idea for preparing the filled thermal conductivity composites with low filling capacity and high thermal conductivity.

Castor oil‐based polyurethane ternary composites with enhanced thermal conductivity and mechanical properties by using liquid metal as second filler

“…Pure PU polymer usually possesses extremely low thermal conductivity. So various series of thermally conductive fillers including ceramic, 5,[12][13][14][15] metallic, [16][17][18] and carbon-based conductive fillers [19][20][21][22][23] are introduced to polymer matrix in order to improve the thermal conductivity of materials. However, the modulus mismatch between fillers and polymer matrix leads to the internal stress concentration, the increase of rigidity, and the decrease of flexibility and ductility of composites.…”

Substantial improvement of thermal conductivity and mechanical properties of polymer composites by incorporation of boron nitride nanosheets and modulation of thermal curing reaction

“…Nowadays, matrix resins are usually reinforced by the use of thermal conductive filler 7,8 (e.g., metallic fillers, 9,10 carbon-based materials, [11][12][13][14][15] and ceramic fillers [16][17][18][19][20][21][22] ) to enhance the TC values. Among these, ceramic fillers (Al 2 O 3 , SiO 2 , AlN, Si 3 N 4 , MgO, and BN) have been widely investigated for their potential in thermal conductive and electrical insulation in composites due to their inherent properties.…”

Interlayer growth of SiC nanowires in graphene aerogel for thermal conductivity enhancement of epoxy resin and its mechanism

“…6 In recent years, three-dimensional graphene thermal conductivity networks have become one of the research highlights in thermal conductive materials due to their greatly improved phonon transmission efficiency and reduced interfacial thermal resistance, which can provide greater thermal conductivity with a small filler loading. [7][8][9][10][11] There are many methods for constructing graphene thermal conductivity networks in polymer substrates, including chemical vapor deposition method, 12 ice-template method, 13 self-assembly method, 14,15 and isolated phase method. 16 Among these methods, the self-assembly method for preparing three-dimensional graphene thermal conductivity networks has many advantages, such as simplicity and low cost.…”