For the problem of combustion residue produced from some modular charge during firing, the residue amounts of two kinds of combustible cases （slow burning and fast burning） after burning were measured through the closed bomb test. The combustion residue amounts of two combustible cases were also tested in the firing range by taking a bag propelling charge as a reference, and the two residue amounts were compared. The results show that near two-thirds combustion residue comes from the combustible case, and the total amount of combustion residue of the modular charge during firing is reduced by two-thirds after the synthetic resin binder and fiber reinforced material are reduced and the nitrocellulose is increased in the improved combustible case. Thus, the combustion residue of modular charge during firing is basically eliminated.
Key words： applied chemistry
simulated combustion experiment