Abstract:To expose the safety of KClO4-type pyrotechnics composite, seven 50/50/m/n-KClO4/Al/epoxy resin/graphite mixture systems(m=n=0; m=3, n=0; m=5, n=0; m=5, n=1; m=5, n=2; m=5, n=3; m=5, n=4) known as samples 1#-7# in this work were prepared, respectively. The effects of epoxy resin and graphite on the impact sensitivity of KClO4-type pyrotechnics composite were studied by standard method GJB772A-1997-601.1, TG-DTA and SEM. The results show that the explosion percent of impact sensitivity for samples 1#-7# is 0, 60, 76, 40, 12, 2 and 0, respectively. In comparison with sample 1#, adding epoxy resin in samples 1# makes the explosion percent of impact sensitivity of samples 2# and 3# enhance and with increasing the amount of epoxy resin in samples 3#, the explosion percent of impact sensitivity increases. In comparison with sample 3#, the addition of graphite into samples 4# makes the explosion percent of impact sensitivity of samples 4#-7# decreases and with increasing the amount of graphite in samples 3#, the explosion percent of impact sensitivity decreases in the order 4#>5#>6#>7#. The reasons of sensitization of epoxy resin and desensitization of graphite to the KClO4-Al binary system are discussed.