Electrostatic Reactivity Control of Polytetrafluoroethylene-Coated Aluminum Powders using Antistatic Agents

Abstract

Aluminum (Al) powders are coated by polytetrafluoroethylene (PTFE), which replaces the naturally formed oxide layer, enhancing thermal oxidation performance via simultaneous exothermic reactions doubling exothermic enthalpy energy compared to uncoated Al powder. However, the PTFE coating significantly increases electrostatic charge, raising ignition risks. The incorporation of antistatic agents such as Bis-Hydroxyethyl Cocomonium Nitrate within a glycerol solution produced a 61% reduction in the electrostatic charge due to surface charge modification of the powders. This study demonstrates the potential of PTFE in enhancing combustion while addressing electrostatic hazards, ensuring safer handling. The findings shows the way for optimized PTFE/Al powder in energetic applications.