Self-healing property characterization of reversible thermoset coatings

• Published in: Journal of thermal analysis and calorimetry 2011-09, Vol.105 (3), p.805-809
• Main Authors: Scheltjens, G., Brancart, J., De Graeve, I., Van Mele, B., Terryn, H., Van Assche, G.
• Format: Article
• Language: English
• Subjects: Analysis; Analytical Chemistry; Applied sciences; Bismaleimides; Calorimetry; Chemical properties; Chemistry; Chemistry and Materials Science; Coatings; Coatings industry; Differential scanning calorimetry; Evaporation; Exact sciences and technology; Fourier transforms; Furans; Infrared spectroscopy; Inorganic Chemistry; Measurement Science and Instrumentation; Miscellaneous; Physical Chemistry; Polymer industry, paints, wood; Polymer Sciences; Properties and testing; Technology of polymers; Thermosetting resins; Thiophene
• ISSN: 1388-6150; 1588-2926; 1572-8943
• DOI: 10.1007/s10973-011-1381-4

A self-healing material for coating applications was synthesized using the Diels–Alder (DA) reaction as cross-linking reaction. The built-in reversibility allows local mobility and rearrangements in the polymeric network, which is composed of a furan functionalized epoxy-amine and a bismaleimide. The self-healing material was characterized by physical–chemical means using Fourier Transform Infrared spectroscopy, thermogravimetric analysis (TG) and rapid heat-cool differential scanning calorimetry. It has been shown that the reversibility, as a result of a change in DA/retro-DA equilibrium, occurs in a temperature window ranging from ca. 80 to 150 °C. The repeatability of the non-autonomous healing was checked by TG, showing no evaporation or degradation of the components involved in the temperature window of interest.