An investigation of the material properties and the fibre-matrix interfacial shear strength in glass fibre epoxy and acrylic composites

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May-Wilson, Gregory and Meyn, Niklas and Giannis, Stefanos and Minty, Ross F. (2025) An investigation of the material properties and the fibre-matrix interfacial shear strength in glass fibre epoxy and acrylic composites. In: SAMPE Europe 25 Conference, 2025-10-06 - 2025-10-07, Muziekgebouw aan het IJ.

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Abstract

The material properties of fibre-reinforced composite materials are highly dependent upon the ability of the fibre-matrix interface to transfer stresses between the constituents. This interfacial shear strength (IFSS), an accepted mechanically measurable value for quantifying fibre-matrix adhesion, between the fibres and matrix is highly influential on the performance of the composite and as such characterisation of the IFSS is critical for understanding composite performance [1]. In the present work thermal analysis of novel thermoplastic Elium191® acrylic was undertaken using a combination of Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA) to study the key material properties tied towards potential residual stress build-up at the fibre matrix interface, including glass transition temperature and storage modulus [2, 3, 4]. Droplets of Bisphenol-A diglycidyl ether (DGEBA) epoxy/triethylenetetramine (TETA) and Elium191® acrylic were applied to multi-compatible sized glass fibres and the IFSS determined using a microbond test to allow for comparisons between the two systems compared, in preparation for further study focused on the effects of humidity and moisture content the fibre matrix interface level.

ORCID iDs

May-Wilson, Gregory, Meyn, Niklas, Giannis, Stefanos and Minty, Ross F. ORCID logoORCID: https://orcid.org/0000-0002-3729-5215;
CORE (COnnecting REpositories)