Abstract
The compression after impact (CAI) properties of bismaleimide (BMI) matrix composites manufactured by resin transfer molding (RTM) were significantly improved by ex-situ RTM technique. The thermoplastic polyetherketone with a functional group of Phenolphthalein (PAEK) was used as toughener. The optical microscopy images of the cross-section of post-impact specimens revealed that the delamination resistance of specimens toughened through ex-situ RTM technique was dramatically improved. The energy absorption mechanism of composites toughened through ex-situ RTM technique was changed from the delamination to fiber fracture, which contributed to the improvement in CAI. The particle microstructure in interlaminar region of composites toughened through ex-situ RTM technique revealed that a reaction-induced phase decomposition and inversion happened in the interlaminar region. The BMI particles were surrounded with the PAEK phase, which can significantly improve the delamination resistance of composites. The in-plane static mechanical properties of G827/BMI composite toughened through ex-situ RTM technique were very well kept.
| Original language | English |
|---|---|
| Pages (from-to) | 2211-2217 |
| Number of pages | 7 |
| Journal | Journal of Applied Polymer Science |
| Volume | 108 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 15 May 2008 |
| Externally published | Yes |
Keywords
- Composites
- Compression after impact
- Ex-situ RTM technique
- Mechanical properties
- Microstructure
ASJC Scopus subject areas
- General Chemistry
- Surfaces, Coatings and Films
- Polymers and Plastics
- Materials Chemistry
