Influence of long-term storage on fire hazard properties of metal nanopowders

International Conference on Innovations in Non-Destructive Testing (SibTest)

Kyrmakova, O.S.^1 ; Sechin, A.I.^1 ; Nazarenko, O.B.^1

Tomsk Polytechnic University, 30 Lenin ave., Tomsk

634050, Russia^1

关键词: Ambient conditions;    Copper nanopowders;    Electrical explosion;    Fire and explosion;    Flame propagation velocity;    Long-term storage;    Nano powders;    Nanometals;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/881/1/012027/pdf
DOI  :  10.1088/1742-6596/881/1/012027

来源: IOP

【 摘 要 】

The production and application of nanomaterials is rapidly expanding. Therefore the problem of their properties change during long-term storage becomes essential. The properties of metal nanopowders after long-term storage under ambient conditions were studied and the results are presented in this work. The aluminum, iron, zinc, and copper nanopowders produced by the method of electrical explosion of wires were investigated in this work. The investigation was carried out by X-ray and thermal analysis. The estimation of the flame propagation velocity in the bulk layer of nanopowders was carried out. The characteristics of the nanopowders of nanometals studied are given in terms of their fire hazard. The results can be used for diagnostic of fire hazard of nanomaterials and protection of the enterprises against fire and explosion.