Abstract
Microwave curing is proposed as an alternative cost-effective process to thermal curing for composite materials. Carbon fiber/bismaleimide composite laminates were fabricated by vacuum assisted microwave processing without arcing. The physical and mechanical properties of cured composites were compared to those produced using autoclave and conventional oven curing. To compensate for the lower vacuum pressure and further improve part quality, hot pressing pretreatment and subsequent microwave radiation were studied. The results indicated that microwave cured samples with 37% of the thermal manufacturing cycle time, obtained basically identical molecular structure and exhibited full curing. Uniformity and consistency of microwave curing was verified by assessing the mechanical strength at different positions in a laminate. The microwave processed panel properties showed a noticeable enhancement as compared with those cured in a traditional oven. A slightly superior performance to autoclave laminates was observed for the composites manufactured with the hot-pressing pretreatment followed by microwave processing.
| Original language | English |
|---|---|
| Pages (from-to) | 316-323 |
| Number of pages | 8 |
| Journal | Materials and Design |
| Volume | 97 |
| DOIs | |
| State | Published - 5 May 2016 |
Keywords
- Carbon fiber
- Cure
- Mechanical properties
- Microwave processing
- Polymer-matrix composites
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