Mechanical Properties and Thermal Conductivity of Epoxy Composites Containing Aluminum-Exfoliated Graphite Nanoplatelets Hybrid Powder

Jin Seob Kim; Kwan Han Yoon; Young Sil Lee; Jong Hun Han

Macromolecular Research, Vol.29, No.3, 252-256, March, 2021

DOI10.1007/s13233-021-9032-5 Export Citation

Mechanical Properties and Thermal Conductivity of Epoxy Composites Containing Aluminum-Exfoliated Graphite Nanoplatelets Hybrid Powder

Jin Seob Kim, Kwan Han Yoon^†, Young Sil Lee¹, and Jong Hun Han^{2, †}

Department of Chemical Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177, Korea
¹Industry-Academic Cooperation Foundation, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177, Korea
²School of Chemical Engineering, Chonnam National University, Gwangju 61186, Korea

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Epoxy/aluminum-exfoliated graphite nanoplatelet (Al-xGnP) composites were prepared. Prior to the preparation of the composite, two types of Al-xGnP hybrid powder were prepared, one is fully inserted xGnP in aluminum (Al) flake and the other is partially inserted xGnP in Al flake, which were confirmed by TEM images. The thermal conductivities of the epoxy composites increased monotonically with the filler content and the partially and fully inserted epoxy/Al-xGnP composites showed almost 2-3 times higher than those of epoxy/xGnP and epoxy/Al composites. Especially, partially inserted epoxy/Al-xGnP composite showed the highest values of thermal conductivity at the same filler concentration because of the network bridge between Al flakes. The tensile and flexural moduli of the fully inserted epoxy/ Al-xGnP showed the highest value in all areas of the filler content because of the good dispersion quality but the tensile and flexural strengths of all epoxy composites decreased with the filler content due to the increase of weak interface between epoxy matrix and the filler.

Keywords:epoxy;aluminum flake;exfoliated graphite nanoplatelets;mechanical property;thermal conductivity

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[2] Kalaitzidou K, Fukushima H, Drzal LT, Compos. Pt. A-Appl. Sci. Manuf., 38, 1675 (2007)

[3] Kalaitzidou K, Fukushima H, Miyagawa H, Drzal LT, Polym. Eng. Sci., 47(11), 1796 (2007)

[4] Kalaitzidou K, Fukushima H, Drzal LT, Compos. Sci. Technol., 67, 2045 (2007)

[5] Kalantari B, Mojtahedi MRM, Sharif F, Rahbar RS, Compos. Pt. A-Appl. Sci. Manuf., 76, 203 (2015)

[6] Galpaya D, Wang M, Liu M, Motta N, Waclawik E, Yan C, Graphene, 1, 30 (2012)

[7] Wetzel B, Rosso P, Haupert F, Friedrich K, Eng. Frac. Mech., 73, 2375 (2006)

[8] Kim HJ, Jung DH, Jung IH, Cifuentes JI, Rhee KY, Hui D, Compos. B Eng., 43, 1743 (2012)

[9] Srivastava VK, Verma A, Am. J. Mater. Sci., 5, 84 (2015)

[10] Jamaludin N, Anithambigai P, Shanmugan S, Mutharasu D, Mater. Sci. Res. India, 11, 35 (2014)

[11] El-Zahraa FI, Abdel-Jaber GT, Khashaba MI, Ali WY, Mater. Sci. Appl., 6, 200 (2015)

[12] Jiang Y, Tohgo K, Yang H, Comput. Mater. Sci., 49, 439 (2010)

[13] Bello SA, Agunsoye JO, Adebisi JA, Suleiman BH, Acta Period. Technol., 48, 25 (2017)

[14] Bello SA, Agunsoye JO, Adebisi JA, Raji NK, Adeyemo RG, Alabi AGF, Hassan SB, Eng. J., 22, 97 (2018)

[15] Yanjie L, Jiangyin L, Yanbin C, Carbon Resour. Convers., 3, 29 (2020)

[16] King JA, Klimek DR, Miskioglu I, Odegard GM, J. Appl. Polym. Sci., 128, 2417 (2013)

[17] Hukushima H, Drzal LT, Rook BP, Rich M, J. Therm. Anal. Calorim., 85, 235 (2006)

[18] Kang CH, Yoon KH, Park Y, Lee D, Jeong S, Compos. Pt. A-Appl. Sci. Manuf., 41, 919 (2010)