Thermally induced self-healing epoxy/glass laminates with porous layers containing crystallized healing agent
T. Szmechtyk, N. Sienkiewicz, K. Strzelec
Vol. 12., No.7., Pages 640-648, 2018
DOI: 10.3144/expresspolymlett.2018.54
DOI: 10.3144/expresspolymlett.2018.54
Corresponding author: T. Szmechtyk 
GRAPHICAL ABSTRACT
ABSTRACT
Porous glass fiber and paper layers were tested for application in thermally induced self healing epoxy laminates as healing porous layers. Both types of layers were impregnated using high purity bisphenol A diglycidyl ether (BADGE) epoxy with ability to crystallize during storage under 25 °C. Absorption capacity of porous layers was evaluated. Differential scanning calorimetry was used to investigate BADGE healing agent recrystallization process. Healing porous glass layers (HPGL) were selected for further tests. Liquid chromatography and Fourier transform infrared (FT IR) spectroscopy provided information about average molecular mass of embedded healing agent and functional groups in HPGL layers. Self-healing efficiency of three different laminates with HPGL layers was calculated based on the results of three-point bending test and Charpy impact test. Also, flexural properties and impact strength of laminates were evaluated. The obtained results confirm competitive self healing ability of composites with HPGL.
