- Recycling zinc oxide varistor blocks for electro-active silicone composites doi link

Auteur(s): Metz R.(Corresp.), Boudehen Loic, Tahir S., Phou T., Prevot G., Jelinek R., Dieudonne-George P., Hassanzadeh Merdad

(Article) Publié: International Journal Of Applied Ceramic Technology, vol. 14 p.274-281 (2017)

DOI: 10.1111/ijac.12637

The recycling process toward the elimination of varistor wastes into new electro-active silicon composites has been investigated. We studied the dependence of the E-J characteristics on the aggregate content in the polymer matrix. Formulations with 40 vol.% metal oxide varistor aggregates in the 100-200m range exhibit reliable nonlinear behavior with a switching voltage of 280 +/- 30V/mm. The breakdown voltage of the composite decreases as both filler's diameter and filler's volume fraction increases in the 550-220V/mm and 440-280V/mm range, respectively. This paves the way for the valorization of varistors based zinc oxide (ZnO) ceramics.