Abstract: Emulsion explosive was prepared through whole physical sensitization by using perlite, glass bead and A₁ particle ,test and comparison were done on sensitizing effect and emulsion explosive performance, the results showed: all the performance indexs of emulsion explosive through sensitization by A₁particle were all better than perlite sensitization and slightly better than glass bead, A₁particle had advantages like environmental protection, pollution-free and so on, it was worth to study further.

Key words: Emulsion explosive, Physical sensitization, A1particle