Polybenzoxazines (PBZs) are attracting great technological interest in many applications (e.g. aerospace, microelectronics, membranes and fuel cells) as they offer potential advantages over existing phenolic resins, including heat resistance, good electrical properties and flame retardance. Additionally, they posses other attractive characteristics: near zero volumetric change upon curing (�1 %), low water absorption (many are saturated at 1-2 % by weight in water) and high char yield (35-75 %, at   800 �C under nitrogen). These predominantly aromatic, addition-cured polymers degrade thermally via a 3-stage process. The present work focuses on the influence of monomer structure and cure schedule on the development of different thermoset networks for which different thermal stability is observed.

Examining the thermal stability and degradation mechanisms of polybenzoxazines

246th National Meeting (2013)

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