Abstract
Adhesion of the reinforcement to the polymer matrix is essential for load transfer from the polymer matrix to the reinforcement material in fiber-reinforced composites. The reversible Diels-Alder reaction between a furan-functionalized epoxy-amine thermosetting matrix with a maleimide-functionalized glass fiber was used to impart remendability at the polymer-glass interface for potential application in glass fiber-reinforced composites. At room temperature the Diels-Alder adduct is formed spontaneously and above 90 °C the adduct breaks apart to reform the original furan and maleimide moieties. Healing of the interface was investigated with single fiber microdroplet pull-out testing. Following complete failure of this interface, significant healing was observed, with some specimens recovering over 100% of the initial properties. Healing efficiency was not affected by the distance of displacement, with an overall average of 41% healing efficiency. Up to five healing cycles were successfully achieved. It is expected that a glass fiber-reinforced composite of maleimide-sized glass within a furan-functionalized network will demonstrate extension of fatigue life.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 586-592 |
| Number of pages | 7 |
| Journal | Composites Science and Technology |
| Volume | 71 |
| Issue number | 5 |
| DOIs | |
| State | Published - Mar 22 2011 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- General Engineering