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High performance epoxy composites cured with ionic liquids
Honorata Ma˛ka,Tadeusz Spychaj,Marek Zenker 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.31 No.-
Two ionic liquids (ILs) with the same dicyanamide anion and various cation types: imidazolium andphosphonium as catalytic agents of epoxy resin have been compared. Neat epoxy materials cured withimidazolium IL exhibited above 45 days latency, high thermal performance, i.e. glass transitiontemperature (above 190 8C), low tan d (0.17), and stability (395 8C/5% weight loss), whereas withphosphonium IL – pot life above 70 days, similar tan d value and high transparency (85%). Carbonnanotubes modified epoxy composites cured with imidazolium dicyanamide IL showed bulk electricalresistivity in a range 107–103 V m for carbon filler content 0.0625–0.25 wt.%. These features designatedeveloped materials for various engineering applications.