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Title: Ignition Sensitivity and Electrical Conductivity of a Composite Energetic Material with Conductive Nanofillers

The safe handling of powdered composite energetic materials requires an understanding of their response to electrostatic ignition stimuli. A binary composite comprised of Al and polytetrafluoroethylene (PTFE) was tailored for ESD ignition sensitivity with varied concentrations of highly conductive nanofillers. The goal was to control the ESD ignition response of the Al+PTFE with small concentrations of nanofillers that may not significantly affect the overall combustion performance of the mixture. The nanofillers examined include carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs). Adding CNTs created percolation at a lower volumetric percentage than GNPs and were found to be the controlling nanofiller, creating percolation for the mixture containing both CNTs and GNPs. Various mixing methods were examined. Ignition was achieved only for adding nanofillers at a volumetric percentage and mixing method that led to a bulk conductivity of approximately 5x10-3 ?S/cm.
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Resource Type:
Journal Article
Resource Relation:
Journal Name: Nanotechnology; Journal Volume: 267
Research Org:
Idaho National Laboratory (INL)
Sponsoring Org:
Country of Publication:
United States
36 MATERIALS SCIENCE; CARBON; GRAPHENE; IGNITION; NANOTUBES; SENSITIVITY carbon; CNT; composite; conductive; conductivity; electrical; energetic; ESD; GNP; graphene; ignition; nanofiller; nanotube; sensitivity; static; thermite