Abstract
The preparation of carbon fiber reinforced polymers (CFRP) using vitrimer with hydroxyl ester bonds as matrix requires harsh degradation conditions. To solve this problem, tung oil-based triglycidyl ester (TOTGE) and 4-aminophenyl disulfide (APD) are cured to fabricate a TOTGE−APD vitrimer with a dual dynamic network of hydroxyl ester and disulfide bonds. The TOTGE−APD vitrimer exhibits a low dynamic bond exchange activation energy (66.51 kJ/mol) due to the introduction of disulfide bonds and can achieve stress relaxation at 100 °C, thus exhibiting excellent self-healing and recycling properties. After crushing/remodeling, tensile strength of the remodeling sample can achieve 97.5% the original sample. Due to the disulfide and ester group in the vitrimer, CFRP prepared with TOTGE−APD vitrimer can be degraded in mercaptoehtanol, ethanolamine, and ethylene glycol, achieving multiple recycling.
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