Back to Search
Start Over
Carbon Fiber Reinforced Epoxy Vitrimer: Robust Mechanical Performance and Facile Hydrothermal Decomposition in Pure Water.
- Source :
- Macromolecular Rapid Communications; Feb2021, Vol. 42 Issue 3, p1-6, 6p
- Publication Year :
- 2021
-
Abstract
- Conventional carbon fiber reinforced thermosetting polymers (CFRPs) are neither recyclable nor repairable due to their crosslinked network. The rapid growing CFRP market raises a serious concern of the waste management. In this work, a viable method to develop a readily recyclable CFRP based on epoxy vitrimer is introduced. First, a self‐catalytic epoxy prepolymer with built‐in hydroxy and tertiary amine groups is designed, which upon reaction with an anhydride formed a catalyst‐free epoxy vitrimer. The epoxy prepolymer is synthesized from a diamine and an excess of bisphenol A epoxy resin. The hydroxyls and tertiary amines of the epoxy prepolymer efficiently catalyze both curing and the dynamic transesterification of the crosslinked polymer without the need of a catalyst. Then, the epoxy vitrimer is used as the matrix resin to prepare CFRP. The resulting CFRP exhibited a tensile strength as high as 356 MPa. More interestingly, the matrix of the CFRP is efficiently degraded in pure water at above 160 °C. This is because the built‐in tertiary amines catalyze the hydrolysis of the ester bonds of the crosslinked network. The simple method developed in this work provides a framework for the development of recyclable CFRP. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10221336
- Volume :
- 42
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Macromolecular Rapid Communications
- Publication Type :
- Academic Journal
- Accession number :
- 148518238
- Full Text :
- https://doi.org/10.1002/marc.202000458