Interfacial adhesion in glass-fiber thermoplastic composites processed from acrylic reactive systems, a multi-scale experimental analysis. (April 2020)

• Record Type: Journal Article
• Authors: Charlier, Q.; Lortie, F.; Gérard, J.-F.
• Is Part Of: International journal of adhesion & adhesives. Volume 98(2020)
• Publication Date: 2020-04
• Subjects: Resin-based composites -- Micro-shear -- Macro-shear -- Interfaces; Adhesion -- Periodicals; Adhesives -- Periodicals; Adhésion (Physique) -- Périodiques; Adhésifs -- Périodiques; Adhesie; Kleefstoffen; Adhesion; Adhesives; Periodicals; 668.3
• DOI: 10.1016/j.ijadhadh.2019.102536
• Languages: English
• ISSNs: 0143-7496

Abstract

Abstract: Interfacial adhesion in poly (methyl methacrylate) (PMMA)/glass fiber (GF) composites which are processed by in-situ polymerization of an acrylic reactive mixture, has been studied at both micro- and macro-scales. On one hand model systems were evaluated at microscale using the microbond test. On the other the 15° off-axis tensile test was used to assess the fiber/matrix interfacial adhesion at macroscale in real-sized thermoplastic (TP) composite parts. For each test, reference epoxy/GF samples were characterized alongside PMMA/GF composites. Results demonstrate that the fiber/matrix interfacial strength in PMMA/GF reaches 60% and 75% of the epoxy reference value at micro and macroscale, respectively. It proves the consistency of analyses at both scales. Thus, a micromechanical analysis relying on the microbond test appears as a reliable tool to estimate the fiber/matrix interfacial bond strength which is experienced in real-sized parts. Overall results also highlight the interest of manufacturing GF/PMMA composites through a reactive process to yield parts exhibiting strong interfacial properties. It may be promising for the development of thermoplastic solutions for structural composite applications.