Lithium fluoride/glycidyl azide polymer(LiF/GAP)was used as an interface layer to modify micron-sized B parti-cles,and the influence of LiF/GAP synergy on the thermal behavior,combustion performance,and condensed phase combus-tion products of boron powder was investigated.The results show that after treatment with silane coupling agent,the surface adhesion of boron powder is improved,and LiF can be well coated on the surface of boron particles.GAP inhibits the reaction between LiF and the oxide film on the surface of boron particles before 400 ℃.This delays the debonding effect of LiF to the stage of boron particle oxidation and weight gain,so that more active boron was exposed to air for oxidation.Thereby promo-ting the combustion of boron particles.The synergistic effect of LiF and GAP significantly improves the combustion performance of boron powder,especially when their mass fractions are 10％.Furthermore,the synergistic action between LiF and GAP ef-fectively suppresses agglomeration of boron powder during combustion process,resulting in the particle size reduction for their condensed phase combustion products.
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