Abstract

AbstractBaO2 and PbO2 are widely used oxidizers which have been observed to suffer degradation after storage in unsealed systems. It is evident that reaction occurs with atmospheric water and carbon dioxide forming carbonates. The inhibition of these reactions by the application of protective coatings is considered, Such techniques appear to be gaining importance in pyrotechnic applications, and criteria for suitable coatants are discussed. Various surfactants were applied to BaO2 and evaluated in an accelerated aging test. Selected anionic and non‐ionic surfactants conferred improved aging resistance, with stearic acid giving the greatest advantage. A very high degree of protection was also afforded to PbO2. Low energy fuses based on a BaO2/Si composition were evaluated and a high resistance to aging was realized using the coated BaO2. There were no adverse effects on other properties, thus satisfying the criteria established for coatants.

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