Development of high thermally conductive and electrically insulated epoxy nanocomposites with high mechanical performance

Shuo Wang, Rui Cai, Hongqian Xue

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)
    69 Downloads (Pure)

    Abstract

    Developing polymer-based nanocomposites with high thermal conductivity, mechanical performance, and electrical insulation becomes a huge challenge in both academia and industry. In this article, the synergistic effects of boron nitride (BN) nanosheets and carbon nanotubes (CNTs) on mechanical properties and thermal conductivity of epoxy nanocomposite adhesives were investigated. The results showed that the addition of one-dimensional CNTs and two-dimensional BN nanosheets into the epoxy matrix contributes to the formation of a three-dimensional network and a larger contact surface between the nanofillers and the epoxy matrix. The hybrid filler of BN and CNTs provided significant improvements in thermal conductivity and mechanical properties of epoxy nanocomposite adhesives. At 1.06 vol% of BN-CNTs, epoxy nanocomposite adhesives provide higher Young's modulus, fracture toughness (K1C), energy release rate (G1C), lap shear strength, and thermal stability compared with epoxy/BN nanocomposite adhesives. The thermal conductivity of epoxy/BN-CNT nanocomposites recorded its maximum values of 0.49 K m−1 k−1 at 3.79 vol% and increased by 335% compared with 133% in case of epoxy/BN at the same fraction of 3.79 vol%.
    Original languageEnglish
    Pages (from-to)4217-4226
    Number of pages10
    JournalPolymer Composites
    Volume42
    Issue number9
    Early online date26 May 2021
    DOIs
    Publication statusPublished - Sept 2021

    Bibliographical note

    This is the peer reviewed version of the following article: Wang, S, Cai, R & Xue, H 2021, 'Development of high thermally conductive and electrically insulated epoxy nanocomposites with high mechanical performance', Polymer Composites, vol. 42, no. 9, pp. 4217-4226, which has been published in final form at 10.1002/pc.26140. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

    Funder

    Shanxi Province Key Research and Development Program, Grant/Award Number: 2019KW-063; Aeronautical Science Foundation of China, Grant/Award Number: 2018ZF54036; China Postdoctoral Science Foundation, Grant/Award Number: 2019M651151; National Natural Science Foundation of China, Grant/Award Number: 51973123; Natural Science Foundation of Liaoning Province, Grant/Award Number: 2019-MS-256; Scientific Research Funds from Liaoning Education Department, Grant/Award Number: JYT2020007; the plan of rejuvenating the talents of Liaoning province, Grant/Award Number: XLYC1907135

    Keywords

    • boron nitride
    • carbon nanotube
    • synergistic effect
    • thermal conductivity

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Chemistry(all)
    • Polymers and Plastics
    • Materials Chemistry

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