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Impact Strengthening of Laminated Kevlar/Epoxy Composites by Nanoparticle Reinforcement
United Arab Emirate Univ, Coll Engn, Mech Engn Dept, Al Ain 15551, U Arab Emirates.;Helwan Univ, Fac Engn, Mech Design Dept, Cairo 11795, Egypt..
United Arab Emirate Univ, Coll Engn, Mech Engn Dept, Al Ain 15551, U Arab Emirates..
Univ Birmingham, Dept Mech Engn, Dubai 341799, U Arab Emirates..
KTH, School of Engineering Sciences (SCI), Engineering Mechanics. Khalifa Univ, Dept Mech Engn, Abu Dhabi 127788, U Arab Emirates.ORCID iD: 0000-0002-9438-9648
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2020 (English)In: Polymers, E-ISSN 2073-4360, Vol. 12, no 12, article id 2814Article in journal (Refereed) Published
Abstract [en]

Herein, we report the fabrication and characterization of high-strength Kevlar epoxy composite sheets for structural application. This process includes optimization of the curing conditions of composite preparation, such as curing time and temperature, and the incorporation of nanofillers, such as aluminum oxide (Al2O3), silicon carbide (SiC), and multi-walled carbon nanotubes (MWCNT) in different weight percentages. Differential scanning calorimetry (DSC) was utilized to investigate the thermal stability and curing behavior of the epoxy, finding that a minimum of 5 min is required for complete curing under an optimized temperature of 170 degrees C. Moreover, mechanical characterization, including flexural and drop-weight tests, were performed and found to be in good agreement with the DSC results. Our results show that nanofiller incorporation improves the mechanical properties of Kevlar epoxy composites. Among the tested samples, 0.5% MWCNT incorporation obtained the highest mechanical strength.

Place, publisher, year, edition, pages
MDPI , 2020. Vol. 12, no 12, article id 2814
Keywords [en]
nanocomposites, Kevlar, epoxy, curing, thermo-mechanical properties
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-289070DOI: 10.3390/polym12122814ISI: 000602476300001PubMedID: 33261001Scopus ID: 2-s2.0-85096773565OAI: oai:DiVA.org:kth-289070DiVA, id: diva2:1521088
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QC 20210122

Available from: 2021-01-22 Created: 2021-01-22 Last updated: 2024-01-17Bibliographically approved

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Barsoum, Imad

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