This paper evaluates the properties of different halogen and antimony free flame retardant epoxy formulations for electrical insulation applications. Measurements of smoke production during combustion, flammability, thermo-mechanical and dielectric tests were carried out. It was found that using aluminum diethylphosphinate, red phosphorous or aluminum trihydrated significantly decreases the flammability of the investigated epoxy formulation while maintaining the good dielectric and mechanical properties.

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