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为研究有机氟化物(OF)对含铝HTPB固体推进剂燃烧性能的影响,采用球磨法制备了纳米和微米铝/有机氟化物复合物(nmAl/OF和μmAl/OF),将其作为复合添加剂替代微米铝粉加入HTPB推进剂中,并考察其对推进剂燃烧性能的影响。采用SEM、TEM、粒度分析等对nmAl/OF和μmAl/OF复合物及推进剂凝聚相燃烧产物进行了表征。结果表明,nmAl/OF和μmAl/OF复合物有不同的结合状态;添加OF、nmAl/OF和μmAl/OF后,推进剂的爆热值下降约2%;添加nmAl/OF的推进剂配方燃速最低,在3MPa时仅为6.28mm/s,添加OF和μmAl/OF体系的推进剂燃速压强指数相比于原配方降低约20%;添加nmAl/OF的推进剂配方凝聚相燃烧产物粒度(D_(50))比原配方降低约47%。
In order to study the effect of organic fluoride (OF) on the combustion performance of solid propellants containing aluminum (HTPB), nanometer and micron aluminum / organic fluoride compounds (nmAl / OF and μmAl / OF) were prepared by ball milling as composite additives Instead of micron aluminum powder added to HTPB propellant, and investigated its impact on the combustion performance of propellants. The combustion products of nmAl / OF and μmAl / OF composites and agglomerated phase of propellants were characterized by SEM, TEM and particle size analysis. The results show that the combination of nmAl / OF and μmAl / OF have different bonding states; the detonation value of propellants decreases by about 2% after adding OF, nmAl / OF and μmAl / OF. The speed is the lowest, only 6.28mm / s at 3MPa. Compared with the original formula, the burning rate pressure index of the propellant added with OF and μmAl / OF system is reduced by about 20%. The addition of nanoAl / (D_ (50)) than the original formula to reduce about 47%.