Abstract
A comparative study using electron-beam(EB) and thermal curing techniques was carried out to determine the effect of cure behavior and thermal stability of epoxy resins. In this work, benzylquinoxalinium hexafluoroantimonate(BQH) was used as a latent cationic catalyst for an epoxy resin. According to the thermogravimetric analysis(TGA), the decomposed activation energy based on Coats-Redfern method was higher in the case of thermal curing technique. This could be interpreted in terms of slow thermal diffusion rate resulted from high crosslink density of the thermally cured epoxy resin. However, the increase of hydroxyl group in the epoxy resin cured by EB technique was observed in near-infrared spectroscopy(NIRS) measurements, resulting in improving the stable short aromatic chain structure, integral procedural decomposition temperature, and finally ductile properties for high impact strengths.
| Original language | English |
|---|---|
| Pages (from-to) | 80-87 |
| Number of pages | 8 |
| Journal | Polymer (Korea) |
| Volume | 26 |
| Issue number | 1 |
| State | Published - Jan 2002 |
| Externally published | Yes |
Keywords
- Electron-beam
- Latent cationic catalyst
- Near-infrared spectroscopy
- Thermal curing
- Thermal stability