Study on thermal conductive PA6 composites with 3‐dimensional structured boron nitride hybrids

Abstract

To develop thermally conductive PA6 composites with the aim of decreasing filler content, structure-complexed fillers were fabricated. This research presented an effective approach by noncovalent functionalization of poly(dopamine) (PDA) followed by silver nanoparticles decoration to fabricate 3-dimensional (3-D) structured boron nitride hybrids (BN@PDA@AgNPs). BN hybrids were then introduced into PA6 to prepare thermally conductive PA6 composites. The results demonstrated that PA6/BN hybrids (PMB) composites exhibited higher thermal conducivity compared with PA6/BN composites, which revealed more effective construction of thermal conductive network in the composites with the addition of 3-D structured fillers. The effects of BN hybrids with different loadings on thermal stability, mechanical property, as well as electrical resistance of the composites were also analyzed. Overall, the prepared PMB composites exhibited outstanding performance in thermal conductivity, thermal stability, mechanical property, while retaining good electrical insulating property, which showed a potential application in electronic packaging fields.

Synergistic enhancement of thermal conductivity by addition of graphene nanoplatelets to three‐dimensional boron nitride scaffolds for polyamide 6 composites

“…Figure 8(B) presents the thermal conductivities of PA6-matrix composites reported in the literature. [8][9][10]12,13,15,16,30,31,[41][42][43][44] The data illustrate that the through-plane thermal conductivity of the PA6/3D-BN-GNP composite is higher than those of PA6-matrix composites reported in the literature, demonstrating that fabrication of 3D-BN-GNP scaffolds via the ice-templating method and the combined use of hybrid nanofillers is an effective strategy to construct thermallyconductive paths in polymer composites.…”

Advances in Studies of Boron Nitride Nanosheets and Nanocomposites for Thermal Transport and Related Applications

“…A major use of BNNs is in polymeric nanocomposites for thermal transport properties and others that take advantage of the mechanical and chemically stable characteristics. The focus here is on the former, [7,13–25,33,95,102,112,133,135–138,142–266] and those who are interested in the latter are referred to other reviews …”

“…The high oxidation resistance of BN is also critical to some of the applications, obviously unmatched by graphene nanosheets as well. As a result, there have been more recent investigations on the development of thermally conductive polymer/BNNs nanocomposites for thermal management and related uses [7,13–25,33,95,102,112,133,135–138,142–266] …”

Multi‐contact hybrid thermal conductive filler Al2O3@AgNPs optimized three‐dimensional thermal network for flexible thermal interface materials

“…These fillers use multiple Preparation methods, such as grafting, adsorption, adhesion, and so on. Compared with traditional single fillers or mixed fillers, the synergistic effect of hybrid fillers can often build a more complete thermal network inside the composite material, so that the composite material exhibits better thermal conductivity, such as BN@CNT, BN@AgNPs, Al 2 O 3 ‐ZnONWs 4,28–31 …”