Abstract
This paper focuses on toughening of a highly cross-linked epoxy system with reactive and nonreactive PES and reactive block copolymer (BCP) toughening agents. The neat resin and toughened resins were characterised by dynamic-mechanical (DMTA) and fracture testing to determine Tg, density, full width half maximum (FWHM) of tan δ, and fracture toughness (KIC). Carbon fibre reinforced composites were manufactured with selected systems by resin film infusion and studied by DMTA and interlaminar fracture testing. Results show that addition of toughening agents did not significantly influence Tg. Nonreactive PES showed phase separation resulting in higher KIC. Whereas the phase separation of reactive PES was dependent on both molar mass and the addition level. Overall, the BCP exhibited the highest toughening effect.
| Original language | English |
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| Title of host publication | ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials|ECCM - Compos. Venice, Proc. Eur. Conf. Compos. Mater. |
| Publisher | University of Padova, Department of Management and Engineering |
| ISBN (Print) | 9788888785332 |
| Publication status | Published - 2012 |
| Event | 15th European Conference on Composite Materials: Composites at Venice, ECCM 2012 - Venice, Italy Duration: 24 Jun 2012 → 28 Jun 2012 |
Conference
| Conference | 15th European Conference on Composite Materials: Composites at Venice, ECCM 2012 |
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| Country/Territory | Italy |
| City | Venice |
| Period | 24/06/12 → 28/06/12 |
Keywords
- Epoxy resins
- Polyethersulfone
- Toughness
- Triblock copolymer