Formulation and Manufacturing of Polybenzoxazine Composites

Abstract:

Polybenzoxazines offer excellent properties regarding mechanical performance, chemical stability, good flame resistance and low water absorption. High curing temperatures of benzoxazine monomers, however, impede the processing of composites. Therefore, this contribution presents a formulation of polybenzoxazines with the aim to reduce the curing temperature and facilitate Out of Autoclave (OoA) oven processes. This is accomplished by copolymerizing benzoxazine monomers with a poly(ε-caprolactone) based plasticizer yielding a resin exhibiting viscosities and reduced curing temperatures suitable for a vacuum infusion as well as compression process. Air void free composites were manufactured successfully featuring temperature dependent mechanical behavior.

• Periodical: Key Engineering Materials (Volume 742)
• Pages: 46-53
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.742.46
• Online since: July 2017
• Authors: Jonas Werner, Hannes Schäfer, Fabian Julius Faßbender, Katharina Koschek*
• Keywords: Compression Molding, Fiber-Reinforced Plastics (FRPs), Manufacturing Processes, Polybenzoxazine, Vacuum Infusion

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