DTA,TG and DSC-TG analysis are used to study the pre-ignition reaction of B/Pb3O4 pyrotechnic delay compositions B1,B2 and B4.The reaction residues are determined by X-ray diffraction (XRD) analysis. The reaction mechanism is proved to be a solid-to-solid reaction which starts mainly at temperatures about 350 ℃ and 450 ℃. The chemical reaction formula in stoichiometry is proposed.
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俞金良,郝建春.硼铅丹延期药预点火反应机理研究[J].含能材料, 2004, 12(3):143-146. YU Jin-liang, HAO Jian-chun. Pre-ignition Reaction Mechanism of B/Pb3O4 Delay Composition[J]. Chinese Journal of Energetic Materials, 2004, 12(3):143-146.