Dual-functionalized multi-walled carbon nanotubes epoxy-based nanocomposites for simplified, adhesive spray-deposited silver layer

Xian, Yeming; Kang, Zhixin; He, Yeqing

doi:10.1016/j.porgcoat.2020.105859

Cited by 3 publications

(1 citation statement)

References 47 publications

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“…Carbon nanotubes (CNTs) have been considered as candidate nanofillers to enhance the mechanical and thermal properties of epoxy composites because of their excellent mechanical properties, high aspect ratios, and low densities. − Moreover, CNTs with ultrahigh theoretical λ (2000–6000 W·m –1 ·K –1 ) tend to construct a thermally conductive network within the matrix . Although their high aspect ratios allow CNTs to easily form continuous conduction networks at low loadings, many efforts show that the practical λ of CNTs/polymer composites is much smaller than their theoretical expectation. , This phenomenon is mainly ascribed to three aspects: (1) a strong aggregative tendency of CNTs because of their atomically smooth and inert surface, (2) a high interfacial thermal resistance caused by the mismatch between the CNTs and matrix, and (3) difficulty in constructing densely interconnected thermal conduction networks.…”

Section: Introductionmentioning

confidence: 99%

Layered Montmorillonite/3D Carbon Nanotube Networks for Epoxy Composites with Enhanced Mechanical Strength and Thermal Properties

Tang

Zhang

Guo

et al. 2022

ACS Appl. Nano Mater.

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Because of their excellent thermal conductivities and high aspect ratios, carbon nanotubes (CNTs) exhibit great potential for use in microelectronic packaging. However, for their application in insulating materials, the high electroconductibility and poor radial conductivity of CNTs significantly limit their loading. In this work, a heterostructured “brushlike” hybrid was first prepared by anchoring aliphatic amine-functionalized multiwalled carbon nanotubes (MWCNTs) onto the insulating montmorillonite (Mt). The morphological characterizations of the heterostructured MWCNTs–Mt hybrids and epoxy composites were examined, revealing that a three-dimensional (3D) thermal conduction network within the matrix was constructed under the geometrical constraints of layered Mt. The synergistic effect of MWCNTs and Mt on the enhanced thermal conductivity and mechanical and thermal properties of the obtained composites was systematically established. The results showed that the thermal conductivity of MWCNTs–Mt/epoxy composites was significantly improved with the 0.5 wt % loading of hybrids, about 61% higher than that of pure epoxies; simultaneously, the dielectric loss of such composites was lower than that of pure epoxies at low frequencies, although the dielectric constant increased. Moreover, the mechanical properties and thermal stability of these composites were synchronously enhanced. This work provides a promising strategy for fabricating polymer composites with relatively high thermal conductivity, low dielectric loss, and excellent thermal stability and mechanical properties.

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