Can I read A novel strategy for high flame retardancy and structural strength of epoxy composites by functionalizing ammonium polyphosphate (APP) using an amine-based hardener on EtoBox?

A novel strategy for high flame retardancy and structural strength of epoxy composites by functionalizing ammonium polyphosphate (APP) using an amine-based hardener by Wenmu Yang; Wenkai Chang; Jin Zhang; Guan Heng Yeoh; Cyrille Boyer; Chun H. Wang is a Engineering article available to read on EtoBox.

What is A novel strategy for high flame retardancy and structural strength of epoxy composites by functionalizing ammonium polyphosphate (APP) using an amine-based hardener about?

Designing flame retardant polymeric coatings and fiber reinforced polymer composites that can retain superior structural strength continues to pose a significant challenge in many industrial applications because common flame-retardant fillers significantly degrade mechanical strength. Herein, we present a novel method of functionalizing ammonium polyphosphate (APP) through the cationic ion exchange reaction with NH 3 + cations contained in amine-based hardener so that the resulting particles can simultaneously improve structural strength and flame retardancy. This technique maintains the original epoxy's composition while reducing peak heat release rate, total heat release, and total smoke release by 87 %, 83 %, and 95 % respectively, enabling the polymer to meet the flame-retardant requirements for railway vehicle applications. The incorporation of the hardener-functionalized APP (HF-APP) at 20 wt% into epoxy demonstrates an impressive 92 % retention of the tensile strength of the epoxy. Compared to the original APP, the HF-APP are twice as effective in reducing total heat release and total smoke release, increasing limiting oxygen index, and improving strength retention. Finite e

Who reads A novel strategy for high flame retardancy and structural strength of epoxy composites by functionalizing ammonium polyphosphate (APP) using an amine-based hardener?

Author

Wenmu Yang; Wenkai Chang; Jin Zhang; Guan Heng Yeoh; Cyrille Boyer; Chun H. Wang

Publisher

Elsevier BV

Published

2024

Language

EN

Field

Engineering (Physical Sciences)