Processing and mechanical properties investigation of epoxy-impregnated graphene paper

Liguang Cai, Ahmed Al-Ostaz, Xiaobing Li, Lawrence T. Drzal, Brian P. Rook, Alexander H D Cheng, Hunain Alkhateb

    Research output: Research - peer-reviewArticle

    Abstract

    One-layer (0.15-mm-thick) and 15-layer (5.43-mm-thick) graphene composites have been fabricated through the impregnation of epoxy resin into porous graphene nanoplatelet (GnP) paper. Three different flake sizes of GnPs were used for the 1-layer graphene composites: 5 μm, mixed 5 μm and 25 μm, and 25 μm. The largest graphene flakes showed the best material properties in terms of tensile strength and elongation at break. Both tensile and dynamic mechanical analysis (DMA) test results demonstrated that the 15-layer graphene composite had better material properties than the 1-layer graphene composites. The storage modulus of 15-layer graphene composite was 170% higher than that of neat epoxy. The transverse surface of 15-layer graphene composite exhibited a higher elastic modulus but lower hardness than the top surface. Ballistic limit test results showed that the combination of polyurea (PU) and a 15-layer graphene composite coating can increase the ballistic limit of TC-128 steel plate slightly.

    LanguageEnglish (US)
    Article number04016005
    JournalJournal of Nanomechanics and Micromechanics
    Volume6
    Issue number3
    DOIs
    StatePublished - Sep 1 2016

    Profile

    Graphene
    Mechanical properties
    Processing
    Composite materials
    Ballistics
    Materials properties
    Elastic moduli
    Composite coatings
    Dynamic mechanical analysis
    Epoxy resins
    Impregnation
    Elongation
    Tensile strength
    Hardness
    Steel

    ASJC Scopus subject areas

    • Mechanical Engineering

    Cite this

    Processing and mechanical properties investigation of epoxy-impregnated graphene paper. / Cai, Liguang; Al-Ostaz, Ahmed; Li, Xiaobing; Drzal, Lawrence T.; Rook, Brian P.; Cheng, Alexander H D; Alkhateb, Hunain.

    In: Journal of Nanomechanics and Micromechanics, Vol. 6, No. 3, 04016005, 01.09.2016.

    Research output: Research - peer-reviewArticle

    Cai, Liguang ; Al-Ostaz, Ahmed ; Li, Xiaobing ; Drzal, Lawrence T. ; Rook, Brian P. ; Cheng, Alexander H D ; Alkhateb, Hunain. / Processing and mechanical properties investigation of epoxy-impregnated graphene paper. In: Journal of Nanomechanics and Micromechanics. 2016 ; Vol. 6, No. 3.
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    abstract = "One-layer (0.15-mm-thick) and 15-layer (5.43-mm-thick) graphene composites have been fabricated through the impregnation of epoxy resin into porous graphene nanoplatelet (GnP) paper. Three different flake sizes of GnPs were used for the 1-layer graphene composites: 5 μm, mixed 5 μm and 25 μm, and 25 μm. The largest graphene flakes showed the best material properties in terms of tensile strength and elongation at break. Both tensile and dynamic mechanical analysis (DMA) test results demonstrated that the 15-layer graphene composite had better material properties than the 1-layer graphene composites. The storage modulus of 15-layer graphene composite was 170% higher than that of neat epoxy. The transverse surface of 15-layer graphene composite exhibited a higher elastic modulus but lower hardness than the top surface. Ballistic limit test results showed that the combination of polyurea (PU) and a 15-layer graphene composite coating can increase the ballistic limit of TC-128 steel plate slightly.",
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